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Ethhomeen T/25 is an ethoxylated tertiary amine-based surfactant belonging to Nouryon's Ethomeene product family, obtained by ethoxylating the primary oil amine of tallow origin. The product is defined as a tallow amine ethoxylate containing approximately 15 moles of ethylene oxide and is particularly evaluated in emulsification, corrosion prevention, cleaning, water treatment, chemical intermediate, and certain agricultural excipient applications.
The current Nouryon product designation of Ethomeen T/25 is "Polyoxyethylene (15) tallowalkylamines". The product is associated with CAS No 61791-26-2 and ECHA identifies the same general chemical family under the name "Amines, tallow alkyl, ethoxylated" with EC/List No 500-153-8.
Ethhomeene T/25 is not a single pure molecule. The starting raw material of tallow origin consists of fatty alkyl groups with different carbon chain lengths, and the ethoxylation process also produces a certain distribution between the molecules. Therefore, it is not correct to give a single exact molecular formula or a single exact molecular weight for Ethhomeene T/25.
The basic structure of Ethomeen T/25 is based on the union of the long hydrophobic tallow alkyl chain and the hydrophilic polyoxyethylene moiety consisting of approximately 15 ethylene oxide units on the same amine center. This structure gives the product the ability to interact with both oily phases and water phase.
Ethomeen T/25 has a higher degree of ethoxylation than Ethomeen T/15. Therefore, it has higher water compatibility and hydrophilic character. In Nouryon's current agricultural products guide, the hydrophile-lipophile equilibrium value for Ethomeen T/25 is given as approximately 14 and for Ethomeen T/15 as approximately 10.
The higher degree of ethoxylation of the product can reduce the wetting rate compared to Ethomeen T/15 while strengthening its solubility in water and emulsification behavior. In the Nouryon technical data, the surface tension of Ethomeen T/25 in a 0.1% solution is approximately 39 mN/m and the Draves soaking time is given as over 10 minutes, while for Ethomeen T/15 it is reported to be approximately 31 mN/m and 80 seconds.
This difference indicates that Ethomeen T/25 should not be considered as the "stronger version of T/15". The two products have different hydrophilic-hydrophobic balance and different application behavior.
Ethomeen T/25 can be used as an auxiliary corrosion inhibitor and formulation aid, especially in oilfield applications, emulsifier in water treatment applications, excipient in agricultural formulations, and intermediate in the chemical sector.
In Nouryon's current oilfield product guide, Ethomeen T/25 is defined as ethoxylated amine that dissolves in water, has high temperature stability and can be evaluated in cleaning systems.
When purchasing Ethomeen T/25, the decision should not be made solely on the basis of trade name or CAS number. Ethoxylation degree, equivalent mass, color, water content, viscosity, density, pH, solubility, surface tension and current TDS, SDS and COA documents should be evaluated together.
WHAT IS ETHOMEEN T/25?
Ethomeen T/25 is an ethoxylated tallow amine found in Nouryon's Ethomeen family of products.
The chemical family is ethoxylated fatty amines. The trade product name is Ethomeen T/25.
It is given the chemical name Polyoxyethylene (15) Tallowalkylamines.
In Turkish, Tallow containing approximately 15 EO can be defined as Amine Ethoxylate. CAS No is 61791-26-2. EC / List No in ECHA's general substance register is 500-153-8.
Ethhomeene T/25 is tallow amine ethoxylate containing about 15 ethylene oxide units. EO here refers to the ethylene oxide unit.
The product is prepared by ethoxylation of the primary amine of tallow origin.
As a result of ethoxylation, hydroxyethyl and polyoxyethylene chains attached to amine nitrogen are formed.
Simplified general structure: R-N[(CH₂CH₂O)xH][(CH₂CH₂O)yH].
R represents long alkyl chains of tallow origin. x and y represent the distribution of ethylene oxide units on molecules.
The total average ethoxylation level is approximately 15 EO for Ethhomeen T/25. Ethhomeen T/25 is not a monomolecular substance.
Therefore, x and y do not have the same exact value in all molecules. The alkyl chain distribution of tallow raw material is also variable.
The typical alkyl chain distribution in the old European technical sheet is approximately:
C12: 1%
C14: 4%
C16: 31%
C18: 64%
It is given as follows.
These values are typical of the old European production specification and should not be applied as a universal specification to all current Ethomeen T/25 products.
The long alkyl chain of Ethhomeene T/25 forms the hydrophobic part of the molecule.
Ethoxylated chains make up the hydrophilic part.
The amine center has a basic character and can be protonated in an acidic environment. Therefore, the surface active behavior of the product can be affected by the ambient pH.
Nouryon classifies Ethomeen T/25 in the product group "cationic surfactants and fatty amines".
However, the behavior of the product in the form of free amine is not quite the same as that of classical permanently charged quaternary ammonium salts.
Protonation of the amine center in acidic media can increase the cationic character.
In a more neutral or alkaline environment, the hydrophilic-hydrophobic balance of the ethoxylated amine structure is more decisive.
The fact that Ethomeen T/25 contains approximately 15 EO makes the product more hydrophilic than Ethomeen T/15.
For Ethomeen T/25 in the Nouryon agricultural products guide:
Active ingredient: 100%
pH: about 9–11, in 1% aqueous solution
Critical micelle concentration: about 0.03 g/L
Surface tension: approx. 39 mN/m
Contact angle: approx. 71°
Draves soaking time: over 10 minutes
Hydrophile-lipophile equilibrium value: approx. 14
is given.
The product is indicated as water-soluble and partially soluble in vegetable oil at the same source.
These properties indicate that Ethomeen T/25 is a more water-oriented, hydrophilic amine ethoxylate.
COMMON PRODUCT AND CHEMICAL NAMES
Ethomeen T/25
Ethomeen T/25
Ethomeen T-25
Polyoxyethylene (15) Tallowalkylamines
Polyoxyethylene (15) Tallow Alkylamines
Tallow Amine Ethoxylate 15 EO
Tallow Amine Ethoxylate 15 EO
Ethoxylated Tallow Amine 15 EO
Ethoxylated Tallow Amini 15 EO
Tallow Alkylamine Ethoxylate
Tallow Alkylamine Ethoxylate
Amines, Tallow Alkyl, Ethoxylated
Ethoxylated Tallow Alkyl Amines
Polyethoxylated Tallow Amine
Polyethoxylated Tallow Amine
CAS 61791-26-2
EC / List No 500-153-8
CAS NO, EC / EINECS NO AND CHEMICAL IDENTIFICATION
Product Name: Ethomeen T/25
Brand: Ethomeen
Manufacturer / brand owner: Nouryon
Chemical name: Polyoxyethylene (15) Tallowalkylamines
English chemical definition: Tallow Amine Ethoxylate containing approximately 15 EO
Chemical class: Ethoxylated fatty amine
CAS No: 61791-26-2
EC / List No: 500-153-8
Single molecular formula: Not defined
Single molecular weight: Not defined
Overall structure: R-N[(CH₂CH₂O)xH][(CH₂CH₂O)yH]
Average degree of ethoxylation: About 15 EO
Active ingredient: 100%
Physical form: liquid at 20 °C
Color: Maximum 7 Gardner in old European product specification
Equivalent mass: 869–952 g/eq in the old European product specification
Water content: Maximum 1% in the old European product specification
pH: About 9–11 in 1% aqueous solution
Density: Approx. 1030 kg/m³, 20 °C
Viscosity: Approx. 300 mPa·s, 20°C
Clarification point: About 15 °C
Pour point: About 5 °C
Flash point: above 100 °C, Pensky-Martens closed cup
Cloud point: Approx. 82 °C, in 1% product / 10% NaCl solution
Surface tension: Approx. 39 mN/m, in 0.1% solution at 25 °C
Draves soaking time: over 600 seconds in 0.1% solution at 25 °C
Since Ethhomeene T/25 is not a one-component pure molecule, commercial quality parameters such as equivalent mass are more meaningful than molecular weight.
In the old European technical sheet, the equivalent mass is given as 869–952 g/eq.
Nouryon's current oilfield product guide defines Ethomeen T/25 as a liquid product containing 15 EO, 100% active, with a viscosity of approximately 300 mPa·s, pH 9–11 and soluble in water.
The old technical sheet and the basic physical data in the current product manual are largely compatible.
However, up-to-date manufacturer TDS and batch COA documents must be used in order acceptance criteria.
CHEMICAL STRUCTURE AND MOLECULAR PROPERTIES OF ETHHOMEEN T/25
The molecular structure of Ethomeen T/25 can be evaluated through three basic parts.
The first part is the long alkyl chain of tallow origin. Since this chain is hydrocarbon, it is prone to interaction with oil, grease and other hydrophobic phases.
The second part is the amine center. Amine nitrogen has a basic character and can accept protons in an acidic environment. This property is important in the pH-dependent surfactant behavior of the product and its adsorption to metal surfaces.
The third part is the hydrophilic polyoxyethylene chain, which consists of about 15 ethylene oxide units. The large number of ether oxygen in this chain can interact with water molecules and improve the compatibility of the product in the water phase.
An important consequence of the overall structure of Ethhomeene T/25 is the presence of both hydrophobic and hydrophilic regions in the same family of molecules.
Through this structure, the product can settle at the oil-water interface and reduce the surface energy between the two phases.
The emulsification effect results from this behavior.
Surfactant molecules that settle around the oil droplet can help reduce the reassembly of the droplets.
The high degree of ethoxylation of Ethhomeen T/25 enhances its water-phase preferring character.
For this reason, Ethomeen T/25 is described as soluble in water but only partially soluble in vegetable oil.
Ethhomeene T/15, on the other hand, may have stronger compatibility with the oil phase because it has a lower ethoxylation degree.
This molecular difference can directly impact the roles of the two products in emulsion design.
The amine group of Ethomeen T/25 can also interact with metal surfaces.
Adsorption of the protonated amine structure to the surface in acidic media can contribute to the formation of an organic layer between the metal and the corrosive liquid.
The hydrophobic character of their long alkyl chain can help reduce the direct contact of this layer with water.
For this reason, Nouryon positions the product as an auxiliary corrosion inhibitor and formulation aid in oilfield applications.
Ethhomeen T/25 contains approximately 15 EOs, creating a different balance between corrosion inhibition and water solubility compared to very low ethoxylated amines.
Whether the product is preferred in the anti-corrosion formulation should not be determined solely by the degree of ethoxylation.
The type of metal, pH of the environment, temperature, salinity, acid type and other components used should be evaluated together.
Key properties of Ethomeen T/25 at the molecular level include:
Ethoxylated amine structure containing about 15 EO
Long tallow-based hydrophobic alkyl chains
Hydrophilic polyoxyethylene chains interacting with water
Protonizable tertiary amine center
High compatibility in water
Adsorption to the oil-water interface
Emulsification ability
Tendency to adsorption to metal surface
Contribution to corrosion prevention systems
Can be used as a high-temperature formulation aid
PHYSICAL AND CHEMICAL PROPERTIES OF ETHOMEEN T/25
Ethomeen T/25 is a 100% active ethoxylated tallow amine that is liquid at room temperature.
General technical specifications:
Physical appearance: Liquid
Chemical family: Ethoxylated fatty amines
Chemical name: Polyoxyethylene (15) Tallowalkylamines
CAS No: 61791-26-2
EC / List No: 500-153-8
Active ingredient: 100%
Average ethoxylation: Approximately 15 EO
Equivalent mass: 869–952 g/eq, legacy European specification
Color: Maximum 7 Gardner, old European specification
Water quantity: Maximum 1%, old European specification
pH: About 9–11 in 1% aqueous solution
Density: Approx. 1030 kg/m³, 20 °C
Viscosity: Approx. 300 mPa·s, 20°C
Clarification point: About 15 °C
Pour point: About 5 °C
Cloud point: Approx. 82 °C, in 1% product / 10% NaCl solution
Flash point: Above 100 °C
Surface tension: Approx. 39 mN/m, in 0.1% solution and at 25 °C
Draves soaking time: over 600 seconds
Ross-Miles foam height: Initially approx. 55 mm
Ross-Miles foam height: approx. 15 mm after 5 minutes
In the old European technical sheet, the solubility behavior of 5% Ethomeen T/25 at 20 °C is given as follows:
Water: Soluble
Ethanol: Soluble
2-propanol: Soluble
Propylene glycol: Soluble
Xylene: Soluble
White spirit: Insoluble
Low aromatic content hydrocarbon solvent: Insoluble
Nouryon's current oilfield product guide also describes Ethomeen T/25 as a water-soluble liquid.
The viscosity of the product varies depending on the temperature.
At low temperature, viscosity may increase and the flow behavior of the product may change.
Therefore, if the warehouse or production area is too cold, the product should be checked for uniformity before use.
In the old product sheet, it is recommended to homogenize Ethomeen T/25 before use, if the entire packaging is not to be used.
HOW DOES ETHOENE T/25 WORK AT THE MOLECULAR LEVEL?
The basic working mechanism of Ethomeen T/25 is based on the formation of a surfactant layer at the oil-water or solid-liquid interface.
The long alkyl chain of the molecule originating from tallow tends to the hydrophobic phase, while the polyoxyethylene part, which contains about 15 EO, interacts with the water phase. Thus, the molecule can act as an interfacing substance between two incompatible phases.
When oil droplets are dispersed in water, Ethomeen T/25 molecules can settle at the oil-water boundary. This can help reduce interface tension and keep small droplets dispersed for longer periods of time.
This mechanism is particularly important for emulsification purposes in water treatment, process fluids, and certain oil additive formulations.
It may have an advantage over Ethomeen T/15 or T/12 in more hydrophilic emulsion systems because the product's high degree of ethoxylation increases its compatibility with the water phase.
The amine center provides another important function. In an acidic environment, the amine group that receives protons can gain a positive charge. This can strengthen the interaction with metal or other polar surfaces.
Molecules adsorbed onto the metal surface can contribute to the formation of an organic film on the surface. This film can help reduce the rate of corrosion by limiting the direct reach of the corrosive liquid onto the metal surface.
In Nouryon's oilfield guide, Ethomeen T/25 is therefore classified as an "auxiliary corrosion inhibitor and formulation aid".
Ethomeen T/25 specified as stable at high temperature can be important in applications such as oil production, refining, and hot process cleaning.
However, the expression "high temperature stable" does not mean that the product is chemically unlimited resistant under all temperature conditions. The actual operating temperature should be determined based on the manufacturer's data and formulation test.
Ethomeen T/25 lowers surface tension but does not provide as fast wetting as T/15.
This is an important result of the high EO content of the product.
Ethomeen T/25 is more hydrophilic and can provide an advantage in terms of emulsification, while Ethomeen T/15 can exhibit stronger and faster wetting behavior.
Therefore, product selection should not be made solely with a "more EO is better" approach.
The primary functions of Ethomeen T/25 in formulation include:
Supporting emulsification
Improving water phase compatibility
Contributing to anti-corrosion systems
Supporting cleaning formulations
Assisting in the dispersion of oil and process fluids
To be used as a chemical intermediate
Acting as an excipient in agricultural formulations
To be able to be used as an auxiliary agent in high temperature formulations
IN WHICH SECTORS IS ETHOMEEN T/25 USED?
The main uses of Ethomeen T/25 specified by Nouryon are chemical intermediates, agricultural formulations, water treatment, and oilfield chemicals.
Main areas of use:
Production of chemical intermediates
Water treatment chemicals
Oil-water emulsion systems
Petroleum production chemicals
Refinery chemicals
Acid cleaning systems
Anti-corrosion formulations
Industrial cleaning systems
Metal surface formulations
Oil additive formulations
Agricultural auxiliary formulations
Water-soluble agricultural concentrates
Nouryon positions Ethomeen T/25 as an emulsifier in the water treatment sector on its current product page.
In oilfield applications, the main functions of the product are specified as corrosion prevention and cleaning.
In the old European technical sheet, it is stated that the product can be used as an emulsifier in agricultural formulations, metal surface formulations and oil additives.
However, technical compliance and regulatory compliance are not the same thing in agricultural use. The current plant protection and auxiliary substance legislation in the country where the final formulation will be used should be checked separately.
WATER TREATMENT, EMULSIFICATION AND PROCESS APPLICATIONS OF ETHOMEEN T/25
The high degree of ethoxylation of Ethomeen T/25 provides a significant advantage in water-compatible emulsion systems.
In its current product page, Nouryon describes the primary function of Ethomeen T/25 in water treatment applications as emulsification.
The main task of the emulsifier is to stabilize the interface between two phases that do not naturally mix with each other.
The long alkyl chain of Ethhomeene T/25 tends to the oil phase, while the ethoxylated chains can remain in the water phase. This structure can help the oil droplets to disperse more stably in the aqueous phase.
Product in water treatment or process chemistry application:
Dispersing oily components in the aqueous system,
emulsifying process oils,
to the inclusion of hydrophobic auxiliaries in the water phase,
Keeping certain chemical packages homogeneous
can help.
However, the same emulsion stability is not achieved by using the same amount of Ethomeen T/25 for each oil.
The polarity, viscosity, and density of the oil are important.
The pH and salinity of the water phase are important.
Temperature matters.
The presence of other surfactants may alter the emulsion behavior.
Therefore, in practice, the emulsion type and stability should be determined by laboratory trial.
The high cloud point of Ethomeene T/25, measured within 10% NaCl, provides useful technical information in some electrolyte-containing systems.
In the old technical sheet, the cloud point of 1% Ethomeen T/25 at 10% NaCl is given as approximately 82 °C.
This value refers to specific test conditions and does not directly indicate the salt tolerance of all formulations.
OILFIELD, CORROSION PREVENTION AND CLEANING APPLICATIONS OF ETHOMEEN T/25
Oil production and refining applications are among the important applications of Ethomeen T/25 that have been validated at the moment.
Oilfield equipment may come into contact with water, salt, acidic components, and high temperature. These conditions can increase the risk of corrosion on metal surfaces.
The amine group of Ethomeene T/25 can help to adsorb to the metal surface. Its long alkyl chains, on the other hand, can contribute to the formation of a more hydrophobic organic layer on the surface.
Therefore, the product can be regarded as an auxiliary corrosion inhibitor and formulation aid in anti-corrosion formulations.
Nouryon's current oilfield product guide specifically for the Ethomeen T/25:
Water-soluble liquid structure,
high temperature stability,
Compliance with cleaning applications
specifies its features.
In acid cleaning applications, the coexistence of surfactant and anti-corrosion functions can be advantageous.
It can help dissolve acid, mineral, or corrosion residues, while Ethomeen T/25 can adsorb to the metal surface, contributing to the reduction of base metal loss.
However, it should not be assumed that the product alone is sufficient corrosion inhibitor for all acid cleaning systems.
Actual formulation performance:
Acid type and concentration,
metal alloy,
operating temperature,
contact time,
Ethomeen T/25 level,
Other corrosion inhibitors
should be verified through.
Although the high temperature stability of Ethomeen T/25 is specified in the nouryon guide, the exact usable temperature range should be determined according to the formulation and application.
IS ETHOMEEN T/25 USED IN FOOD, COSMETICS AND PHARMACEUTICAL APPLICATIONS?
Ethomeen T/25 is mainly a technical and industrial surfactant raw material.
Nouryon's current product page does not claim the use of food additives, pharmaceutical excipients or direct cosmetic raw materials for the product.
Therefore, the use of standard Ethomeen T/25 directly in food formulation should not be considered appropriate.
It should not be assumed to be a food grade product.
It should not be assumed to be pharmaceutical grade.
Cosmetic suitability should also not be inferred only on the basis of the general chemical family or CAS number.
Although historical cosmetic names can be found for ethoxylated tallow amines, this does not imply the current cosmetic suitability of Ethhomeen T/25 commercial grade.
If a cosmetic or personal care application is considered, the product's current manufacturer's legislation documents, INCI equivalent and target market legislation should be verified separately.
The main current uses of Ethomeen T/25 are chemical intermediates, water treatment, oilfield applications and certain agricultural auxiliary systems.
INDUSTRIAL APPLICATIONS OF ETHOMEEN T/25
Ethomeen T/25 can be valued in industry as emulsifier, formulation aid, corrosion prevention aid and chemical intermediate as more hydrophilic ethoxylated oil amine.
Its key functions in industrial applications include:
Aiding in the emulsification of oily ingredients in water
Supporting corrosion prevention in oilfield formulations
Supporting the formulation of acid cleaning systems
Acting as an auxiliary agent in process chemicals used at high temperature
To be used as an emulsifier in water treatment systems
To provide surfactant additives in metal surface formulations
To be used as an excipient in agricultural formulations
Acting as an intermediate in the production of other surfactants or functional chemicals
The following formulation parameters should be considered together when using Ethomeen T/25:
Ethomeen T/25 quantity
System pH
Amount of electrolytes
Type and amount of oil phase
Type and concentration of acid
Metal type
Process temperature
Other surfactants
Solvent system
Emulsion stability
Foam behavior
Corrosion rate
Phase separation
Viscosity
Storage stability
TDS
SDS
COA
The high hydrophilic character of Ethomeen T/25 does not mean that it will be the optimum emulsifier on its own in systems with a high proportion of oil phases.
It can be used in combination with more lipophilic auxiliary surfactants if necessary.
Such mixtures should be evaluated by laboratory emulsion stability tests.
WHAT PROBLEMS CAN ETHOMEEN T/25 SOLVE?
Ethomeen T/25 can help solve a variety of technical problems, especially in systems where water compatibility, emulsification, high temperature formulation and corrosion control are required.
The oil phase cannot be distributed stably in water
The hydrophilic ethoxylate structure of Ethhomeen T/25 can help stabilize the oil-water interface and disperse the oil droplets in the aqueous phase.
Lower ethoxylated amine does not dissolve enough in water
Because Ethomeen T/25 contains about 15 EO, it provides a higher hydrophilic character than lower ethoxylated products such as T/12 or T/15.
Oilfield formulation needs to promote anti-corrosion performance
Ethomeen T/25 can be considered as an auxiliary corrosion inhibitor thanks to its amine structure that can adsorb to metal surfaces.
Acid cleaning formulation requires both cleaning and surface protection support
The product can help to combine surfactant behavior and metal surface adsorption in the same formulation.
Process formulation rises to high temperature
Nouryon describes Ethomeen T/25 as a formulation aid with high temperature stability in its oilfield product portfolio.
Phase separation during emulsion storage
Phase stability can be improved by optimizing the amount of Ethomeen T/25 and its ratio with other emulsifiers. However, the type of oil, pH and electrolyte level should also be evaluated together.
Surfactant becomes cloudy in the saline system
The clouding behavior of Ethomeen T/25 in salt-containing systems can be advantageous; however, the salt tolerance of the final formulation must be tested separately.
Ethomeen T/15 remains too lipophilic in the system
Ethomeen T/25, with its higher ethoxylation level, can be considered as a more hydrophilic alternative.
The wetting speed of the Ethomeen T/25 remains low
In this case, a combination with a lower ethoxylated and faster wetting co-surfactant can be considered. Ethomeen T/15 performs differently in this respect.
The formulation foams too much
The foam of Ethomeen T/25 can decrease significantly over time; in the old Ross-Miles data, the initial foam was about 55 mm, but after 5 minutes it decreases to 15 mm. However, the actual formulation foam depends on the other ingredients.
Not every emulsification or corrosion problem can be solved by simply increasing the amount of Ethomeen T/25.
All formulation and process conditions should be evaluated together.
THINGS TO CONSIDER WHEN USING ETHOMEEN T/25
When using Ethomeen T/25, product identity, ethoxylation degree, pH, temperature and compatibility with other formulation ingredients should be checked.
The following points should be evaluated during use:
Ethomeen T/25 commercial grade must be verified.
CAS No 61791-26-2 should be checked.
It should be verified that there are about 15 EO-containing products.
The active ingredient ratio should be checked.
The equivalent mass must be checked.
The color value should be examined.
The amount of water should be controlled.
Viscosity and density should be considered.
System pH should be measured.
The amount of acid or alkali should be determined in a controlled manner.
The amount of electrolyte should be taken into account.
Emulsion stability should be tested.
The anti-corrosion performance must be verified on the actual metal.
High temperature stability should be tested under application conditions.
Foam behavior should be evaluated.
Product homogeneity should be checked at low temperature.
The change in phase or appearance should be monitored during storage.
TDS should be examined.
SDS should be examined.
Batch values must be verified via COA.
The old European technical sheet recommends that Ethomeen T/25 be homogenized before use if the entire packaging is not to be used.
This recommendation shows the importance of using the product in a completely homogeneous state after storage.
Ethomeen T/25 should not be directly modified with other ethoxylated amines only because the CAS number is the same.
The degree of ethoxylation is the basic parameter in formulation behavior.
INITIAL FORMULATION APPROACHES FOR ETHOMEEN T/25
The following examples are initial approaches to illustrate how Ethomeen T/25 can be evaluated during formulation and process development. These are not validated commercial recipes, manufacturing instructions, or final formulations that comply with regulations.
The actual usage level should be determined by laboratory study based on oil phase, pH, electrolyte content, metal type, temperature, and target performance.
EXAMPLE 1: USAGE LEVEL SCREENING OF ETHOMEEN T/25 OIL-WATER EMULSION
Purpose: To compare the effect of Ethomeen T/25 amount on oil droplet formation, emulsion appearance, and storage stability.
Starting ingredients (% by weight; products are weighed in the commercial form in which they are used):
Check A / Trial B / Trial C / Trial D:
Deionized water: 83.50% / 83.00% / 82.50% / 81.50%
Model oil phase (mineral oil): 15.00% / 15.00% / 15.00% / 15.00%
Ethomeen T/25 (approx. 100% active): 0.00% / 0.50% / 1.00% / 2.00%
Auxiliary nonionic emulsifier (fatty alcohol ethoxylate): 1.00% / 1.00% / 1.00% / 1.00%
Sodium chloride: 0.20% / 0.20% / 0.20% / 0.20%
Sodium citrate (pH buffer): 0.30% / 0.30% / 0.30% / 0.30%
TOTAL: 100.00% / 100.00% / 100.00% / 100.00%
The amount of water is balanced as the Ethomeen T/25 level increases; the fat, co-emulsifier and electrolyte ratios are constant. pH is measured in all samples and maintained within the same target range as much as possible; no separate pH adjuster addition was calculated here. Since the co-emulsifier was present in the control sample, this experiment isolates the Ethomeen T/25 additive, it is not a control without emulsifier. The ratios are for laboratory pre-screening.
Application approach:
The water and oil phases are prepared separately.
Ethomeen T/25 is added to the system according to the determined formulation plan.
The same temperature and mixing conditions are used in all samples.
The first emulsion appearance is recorded.
Droplet size is measured if possible.
After 24 hours and 7 days, phase separation is checked.
Low and high temperature storage test is applied.
Accelerated stability with centrifugation is comparable.
The system, which provides sufficient stability with the lowest amount of Ethomeen T/25, is taken to subsequent tests.
EXAMPLE 2: ETHOMEEN T/25 ACID CLEANING AND CORROSION SCREENING
Objective: To evaluate the effect of Ethhomeene T/25 level on metal loss and formulation stability in acid environment.
Starting ingredients (wt%; aqueous citric acid-based model test solution):
Check A / Trial B / Trial C / Trial D:
Deionized water: 94.75% / 94.65% / 94.50% / 94.25%
Citric acid (anhydrous): 5.00% / 5.00% / 5.00% / 5.00%
Ethomeen T/25 (approx. 100% active): 0.00% / 0.10% / 0.25% / 0.50%
Co-ionic surfactant (fatty alcohol ethoxylate): 0.25% / 0.25% / 0.25% / 0.25%
Auxiliary corrosion inhibitor: 0.00% / 0.00% / 0.00% / 0.00%
TOTAL: 100.00% / 100.00% / 100.00% / 100.00%
Metal sample, test temperature and contact time are not formulation raw materials; percentage total is not included and is kept constant in all trials. In this screening, only the Ethomeen T/25 ratio is changed; balancing is done with the amount of water. The pH of the citric acid model medium and its effect on the metal should be verified before the experiment. It should not be assumed that Ethomeen T/25 alone will provide corrosion protection; the ratios are not verified commercial recipes.
Application approach:
Metal coupons are cleaned, dried, and the starting masses are recorded.
Ethhomeene T/25 is added to the acid system at different levels.
Samples are tested at the same temperature and for the same amount of time.
At the end of the test, the metal coupons are properly cleaned and dried.
Mass loss is compared.
The metal surface appearance is examined.
The formulation is checked for precipitation or phase separation.
Cleaning performance is evaluated separately.
The system that provides sufficient cleaning performance with the lowest metal loss is determined.
ETHOMEEN T/25 ALTERNATIVES AND COMPARISON
When selecting the alternative for Ethhomeen T/25, one should not look at the CAS number alone. The degree of ethoxylation, hydrophilic character, water solubility, emulsification, wetting, corrosion prevention, and temperature behavior should be evaluated together.
ETHOMEEN T/25 AND ETHOMEEN T/15
Ethhomeen T/15 and Ethhomeen T/25 are in the same tallow amine ethoxylate family but have different levels of ethoxylation.
Ethomeen T/15 contains about 5 EOs, while Ethomeen T/25 contains about 15 EOs.
Therefore, Ethomeen T/25 is more hydrophilic.
In the Nouryon agricultural guide, the hydrophile-lipophile equilibrium value is given as approximately 10 for T/15 and approximately 14 for T/25.
T/15 provides faster wetting. T/25, on the other hand, can provide advantages in terms of water compatibility and more hydrophilic emulsification.
Two products should not be exchanged one-to-one by weight in the same formulation.
ETHOMEEN T/25 AND ETHOMEEN T/12
Ethomeen T/12 tallow is in the structure of alkylamine + approximately 2 EO.
Ethomeen T/25, on the other hand, contains about 15 EOs.
T/12 is much more lipophilic in character and is defined as a fat-soluble product in the oilfield product guide.
T/25 is stated as water-soluble.
Therefore, T/12 may be advantageous in more oil-phase-heavy systems, while T/25 may be more suitable in aqueous formulations.
Direct substitution should not be done due to the large difference in ethoxylation levels.
ETHOMEEN T/25 AND ETHOMEEN C/25
Ethomeen C/25 and Ethomeen T/25 are amine ethoxylate products containing approximately 15 EO.
The main difference is the source of the hydrophobic alkyl chain.
Ethomeen C/25 is based on alkylamine of coconut origin.
Ethhomeen T/25 is based on tallow-based alkylamine.
The alkyl chain distribution of coconut origin has a shorter average chain structure than the tallow alkyl distribution.
This difference can alter solubility, emulsification, and surfactant behavior.
The two products should not be considered equivalent as they contain only 15 EOs.
ETHOMEEN T/25 AND ETHOMEEN O/12
Ethhomeene is the more lipophilic product in the structure of O/12 oleyl amine + about 2 EO.
Ethomeen T/25 is noticeably more hydrophilic as it contains about 15 EO.
Ethomeen O/12 is positioned as an oil-soluble and acid cleaning auxiliary product in oilfield applications.
Ethomeen T/25 is defined as a formulation aid that is water-soluble, stable at high temperature and suitable for cleaning systems.
Therefore, product selection should be made according to the structure of the phase to be used.
ETHOMEEN T/25 AND CLASSIC FATTY ALCOHOL ETHOXYLATES
Fatty alcohol ethoxylates are nonionic surfactants that do not contain amine groups.
Ethhomeen T/25 is ethoxylated fat amine that carries a tertiary amine center.
The protonability of the amine center distinguishes Ethhomeene T/25 from classical fatty alcohol ethoxylates.
This property can provide technical advantage in metal surface adsorption and corrosion prevention formulations.
Fatty alcohol ethoxylates may exhibit stronger or different wetting behavior in some cleaning applications.
Therefore, it should not be assumed that alcohol ethoxylate with the same EO number and Ethomeen T/25 will give the same performance.
QUALITY CONTROL AND PURCHASING CRITERIA FOR ETHOMEEN T/25
When purchasing Ethomeen T/25, it should be verified that the product is indeed Nouryon Ethomeen T/25 grade, which contains approximately 15 EO.
Recommended information to review before purchasing:
Full product name
Manufacturer / brand owner
Ethomeen T/25 grade verification
Chemical name
CAS number
EC / List number
Active ingredient ratio
Degree of ethoxylation
Equivalent mass
Color value
Amount of water
Physical appearance
pH
Density
Viscosity
Pour point
Clarification point
Cloud point
Flash point
Surface tension
Soaking time
Foam behavior
Water solubility
Solvent compatibility
Storage conditions
Shelf life
Packaging Type
Batch number
Information of origin
TDS
SDS
COA
REACH information
In the old European product specification, a maximum of 25 Gardner colors, an equivalent mass of 7–869 g/eq and a maximum of 952% water are given for Ethomeen T/1.
These values are useful references for assessing product identity and batch consistency.
However, instead of using the old technical sheet directly as a purchase specification, the current Nouryon specification should be requested.
The COA must show the actual analysis results of the specific delivery batch.
TDS describes standard product specifications and typical values.
SDS contain safety, storage and handling information.
The functions of these three documents are different and should be evaluated together.
STORAGE AND HANDLING OF ETHOMEEN T/25
Storage: Ethomeen T/25 should be stored in clean, dry and suitable sealed packaging.
Temperature: At very low temperatures, the viscosity of the product may increase and its physical appearance may change. In the old European technical sheet, the pour point is given as approximately 5 °C and the clarification point as approximately 15 °C.
Homogeneity: If the entire packaging is not to be used at once, it should be ensured that the product is homogeneous before use. In the old manufacturer's leaflet, it is recommended that Ethomeen T/25 be homogenized before use.
High temperature: Unnecessarily high storage temperatures should be avoided. The presence of high temperature stability of the product in oilfield applications does not mean that it should be stored at uncontrolled high temperature for a long time.
Water and contamination: Unwanted water, acid, alkali or other formulation raw materials should be prevented from entering the packaging.
Acids: Contact with acids can protonate the amine center, altering the ionic and surfactant behavior of the product. This change should be done in a controlled manner within the formulation.
Oxidizers: Must be kept separate from strong oxidizers.
Packaging: Current drum, IBC or other packaging options must be verified by the supplier prior to order.
FIFO: First-in, first-out principle and batch tracking should be applied.
Transport: The transport classification must be verified from the current SDS document of the purchased Ethomeen T/25 product.
ETHOMEEN T/25 SAFETY INFORMATION
Ethomeen T/25 is a concentrated industrial surfactant raw material and the current manufacturer's SDS should be taken as a basis for safe use.
In the Ethomeen T/25 safety documents published on behalf of Nouryon, oral acute toxicity, severe eye damage, inhalation acute toxicity and long-term hazard to the aquatic environment classifications have been reported for the product.
For this reason, the product should not be considered as a harmless detergent raw material.
Contact of the concentrated product with eyes should be avoided.
Skin contact should be limited.
Exposure control is especially important in processes where vapors or aerosols may occur.
Adequate ventilation should be provided.
Appropriate chemical resistant gloves should be used.
Eye and face protection should be used.
The requirement for respiratory protection should be determined based on the current SDS and workplace risk assessment.
The product should not be discharged into the environment uncontrollably.
Spills should be controlled quickly as the spilled product may create a slippery surface.
It should not be assumed that the safety classification of different ethoxylated tallow amines bearing the same CAS number is exactly the same as that of Ethomeen T/25.
Up-to-date SDS of the commercial product should be used in the safety assessment.
WHAT TO CONSIDER WHEN BUYING ETHOMEEN T/25?
In the supply of Ethomeen T/25, the target application should be determined first.
The evaluation criteria for the product to be used as a water treatment emulsifier and the product to be used in oilfield corrosion formulation may not be the same.
It is not enough to just write "Tallow Amine Ethoxylate" in the purchase request.
It should be clearly stated that grade Ethomeen T/25 is required, which contains approximately 15 EO.
The following information should be clarified before purchasing:
Use sector and end application
Ethomeen T/25 grade requirement
Verification of about 15 EO structures
CAS No: 61791-26-2
Requested active ingredient ratio
Equivalent mass range
Color limit
Water limit
pH requirement
Viscosity requirement
Density
Emulsification requirement
Corrosion prevention requirement
Operating Temperature
Amount of electrolyte in the system
Oil phase used
Type of acid used
Metal type
Manufacturer and origin
Packaging type
Estimated order quantity
TDS
SDS
COA
REACH documents
If substituting with an existing product, current TDS and COA information
The price of Ethomeen T/25 may vary depending on the manufacturer, origin, order quantity, packaging and current logistics conditions.
The lower price of lower or higher ethoxylated amines of the same CAS number does not mean that they will provide the same application performance as Ethomeen T/25.
In the transition to a new product, emulsification, solubility, corrosion, foam, and storage stability should be compared at the laboratory scale.
ETHOMEEN T/25 SUPPLY FROM ATAMAN KIMYA
Ethomeen T/25; ethoxylated tallow amine containing approximately 15 EOs evaluated in water treatment, oilfield chemicals, anti-corrosion formulations, acid cleaning, chemical intermediates, and certain agricultural formulations.
Companies that want to get information about the supply of Ethomeen T/25 from Ataman Kimya can share their usage areas and technical needs and request information about product suitability, current supply conditions, packaging options and price offer.
The current stock status, manufacturer, origin, active ingredient ratio, equivalent mass, color value, water amount, packaging and other technical specifications of the product should be confirmed from Ataman Kimya before ordering.
Sharing the following information in the request for quotation facilitates the evaluation of the right Ethomeen T/25 product:
Use sector and end application
Ethomeen T/25 grade requirement
Purpose of emulsification
The need for corrosion prevention
Operating Temperature
Oil or process fluid used
If acid cleaning is to be done, the type of acid
Metal type
Target pH
Equivalent mass requirement
Color and water limits
Estimated order quantity
Requested packing
Requested technical documents
TDS or COA information of the current product, if applicable
FREQUENTLY ASKED QUESTIONS ABOUT ETHOMEEN T/25
What is Ethomeen T/25?
Ethhomeen T/25 is ethoxylated tallow amine offered by Nouryon that contains approximately 15 ethylene oxide units.
Who is the manufacturer of Ethomeen T/25?
Ethomeen is Nouryon's commercial product family.
What is the chemical name of Ethomeen T/25?
It is identified by Nouryon as Polyoxyethylene (15) Tallowalkylamines.
What is the chemical definition of Ethomeene T/25 in English?
It can be described as Tallow Amine Ethoxylate, which contains about 15 EOs.
What is the CAS number of Ethomeen T/25?
CAS No is 61791-26-2.
What is the EC number of the Ethomeen T/25?
In the ECHA general substance register, EC/List No is 500-153-8.
What is the molecular formula of Ethomeen T/25?
It does not have a single precise molecular formula. Tallow is a family of substances with a variable alkyl chain and ethoxylation distribution.
What is the molecular weight of Ethomeen T/25?
No single exact molecular weight is defined. Equivalent mass is used in commercial quality control.
What is the equivalent mass of Ethomeen T/25?
In the old European product specification, it is given as 869–952 g/eq.
How many EOs does Ethomeen T/25 contain?
It contains about 15 EOs.
Does the number "25" in Ethomeen T/25 mean 25 EO?
The product is defined by Nouryon as a tallow amine ethoxylate containing 15 EO.
What is the active ingredient ratio of Ethomeen T/25?
It is given 100% actively in Nouryon sources.
Is Ethomeen T/25 a liquid?
It is defined as a liquid at 20 °C.
What is the viscosity of Ethomeen T/25?
At 20 °C, a typical value of approximately 300 mPa·s is given.
What is the density of Ethomeen T/25?
At 20 °C, it is about 1030 kg/m³.
What is the pH of Ethomeen T/25?
In 1% aqueous solution, it is about 9–11.
What is the flash point of Ethomeen T/25?
Pensky-Martens is above 100 °C in the closed cup method.
What is the pour point of Ethomeen T/25?
It is given as approximately 5 °C in the old European technical sheet.
What is the surface tension of Ethomeen T/25?
It is about 39 mN/m in 0.1% solution at 25 °C.
Is Ethomeen T/25 soluble in water?
Nouryon sources describe the product as water-soluble.
Is Ethomeen T/25 soluble in vegetable oil?
Nouryon is given in the agricultural guide as partially soluble in vegetable oil.
Is Ethomeen T/25 an emulsifier?
Nouryon positions the product as an emulsifier, especially in water treatment applications.
Is Ethomeen T/25 a corrosion inhibitor?
Nouryon defines the product with anti-corrosion function in oilfield applications. It is included in the current oilfield guide as an auxiliary corrosion inhibitor and formulation aid.
Is Ethomeen T/25 used for acid cleaning?
The Nouryon product page specifies acid cleaning, petroleum production, and refining applications.
Is Ethomeen T/25 used in oilfield?
It can be used in corrosion prevention and cleaning applications.
Is Ethomeen T/25 used in water treatment?
Nouryon is stated as an emulsifier in the water treatment industry on its current product page.
Can Ethomeen T/25 be used at high temperature?
In the Nouryon oilfield product guide, Ethomeen T/25 is described as a formulation aid with high temperature stability. The actual operating temperature must be verified by application testing.
Is Ethomeen T/25 used in agriculture?
Nouryon shows the product among the agricultural formulation aids. The actual use should be evaluated according to the current legislation of the target country.
What is the hydrophile-lipophile equilibrium value of Ethomeen T/25?
Nouryon is given as approximately 14 in the agricultural guide.
What is the critical micelle concentration of Ethomeen T/25?
Nouryon is given in the agricultural guide as approximately 0.03 g/L.
What is the soaking time of Ethomeen T/25?
In the Draves test, a value of over 10 minutes is reported at a level of 1 g/L.
Why does Ethomeen T/25 soak slower than T/15?
T/25 has a higher degree of ethoxylation and a more hydrophilic structure. This can change the rate of adsorption and wetting to the oily or hydrophobic surface.
Is Ethomeen T/25 the same as Ethomeen T/15?
T/15 contains about 5 EOs, T/25 contains about 15 EOs.
Is Ethomeen T/25 the same as Ethomeen T/12?
T/12 is the more lipophilic tallow amine ethoxylate containing about 2 EO.
Is Ethomeen T/25 the same as Ethomeen C/25?
Both contain about 15 EO, but C/25 is based on coconut alkylamine and T/25 is based on tallow alkylamine.
Is Ethomeene T/25 cationic?
Nouryon classifies the product in the cationic surfactant family. When the amine center is protonated in acidic media, the cationic character becomes evident.
Is Ethomeen T/25 a classic quaternary ammonium salt?
Ethhomeene T/25 is ethoxylated tertiary amine and is not a permanent quaternary ammonium salt.
Is Ethomeen T/25 used in food?
Standard Ethomeen T/25 should not be considered as a direct food additive.
Is Ethomeen T/25 used in cosmetics?
The suitability of commercial Ethomeen T/25 for cosmetic use should not be assumed; current manufacturer and regulatory documents should be checked.
Is Ethomeen T/25 pharmaceutical grade?
The standard technical product should not be assumed to be pharmaceutical grade.
Can Ethomeen T/25 darken at low temperature?
Low temperature can affect viscosity and physical appearance.
Should Ethomeen T/25 be mixed before use?
The former manufacturer's technical sheet recommends homogenizing the product before use if the entire packaging is not to be used.
Can Ethomeen T/25 be dangerous?
Current product SDS should be taken into account. Published safety data include classifications such as severe eye damage, acute toxicity and aquatic hazard.
What values should be checked when buying Ethomeen T/25?
Product identity, 15 EO structure, equivalent mass, active ingredient, color, amount of water, viscosity, pH, and application-specific performance should be checked.
What documents should be required for Ethomeen T/25?
TDS, SDS and COA are the basic documents. Depending on the application, REACH and other regulatory documents may also be requested.
How should Ethomeen T/25 be stored?
It should be stored in closed, clean and appropriate temperature packages; product homogeneity should be checked before use after low temperature.
ETHOMEEN T/25 – TECHNICAL SUMMARY
Ethomeen T/25 is an ethoxylated tallow amine containing approximately 15 EOs found in Nouryon's Ethomeen family of products.
On the current product page of Nouryon, the chemical name is Polyoxyethylene (15) Tallowalkylamines.
CAS No is 61791-26-2.
It is identified as EC/List No 500-153-8 in ECHA's general "Amines, tallow alkyl, ethoxylated" registry.
Ethhomeene T/25 is not a single pure molecule.
Since there is a tallow-based alkyl chain distribution and ethoxylation distribution, the only exact molecular formula and the only exact molecular weight are not defined.
The product contains about 15 EO and is 100% active ingredient. It is liquid at 20 °C.
In the old European technical sheet, the equivalent mass is given as 869–952 g/eq, the color as a maximum of 7 Gardner, and the amount of water as a maximum of 1%.
The typical density is about 1030 kg/m³. The viscosity of 20 °C is about 300 mPa·s. The pH of a 1% aqueous solution is about 9–11.
The surface tension is approximately 39 mN/m in 0.1% solution at 25 °C.
Ethomeen T/25 shows more hydrophilic character compared to Ethomeen T/15 and T/12 due to its high degree of ethoxylation.
In the Nouryon agricultural guide, the hydrophile-lipophile equilibrium value is given as approximately 14.
The product is described as water-soluble and partially soluble in vegetable oil.
The main current uses of Ethomeen T/25 are chemical intermediates, water treatment, oilfield applications and agricultural formulation aids.
It is used as an emulsifier in water treatment applications.
In oilfield applications, it is valued for its anti-corrosion and cleaning functions.
In Nouryon's current oilfield product guide, Ethomeen T/25 is defined as an auxiliary corrosion inhibitor/formulation aid that is water-soluble, has high temperature stability and is suitable for cleaning systems.
The amine center of Ethomeene T/25 can be protonated in acidic media, and this property can alter its interaction with metal surfaces.
The long tallow alkyl chain provides hydrophobic character, while the polyoxyethylene section enhances compatibility with the water phase.
This structure forms the basis of the product's function in emulsification and corrosion prevention systems.
Ethomeen T/25 and Ethomeen T/15 are not direct alternatives to each other.
T/15 is about 5 EO and HLB is about 10, while T/25 is about 15 EO and HLB is about 14.
T/15 provides faster wetting, while T/25 provides higher hydrophilic character and water phase compatibility.
When purchasing Ethomeen T/25, not only the CAS number; commercial grade, ethoxylation degree, equivalent mass, active ingredient, color, water content, viscosity, pH and current technical documents should be evaluated together.
It is recommended that companies planning to supply Ethomeen T/25 from Ataman Kimya confirm up-to-date product, stock, origin and offer information by sharing their usage area, emulsification or corrosion purpose, operating temperature, pH, oil or acid system used, target quality criteria, packaging and technical document needs.
