DIETHYLHYDROXYLAMINE

Diethylhydroxylamine (DEHA), more specifically N,N-diethylhydroxylamine, is an organic hydroxylamine with CAS 3710-84-7 and formula C4H11NO, used as an oxygen scavenger and radical scavenger in industrial systems. Its reducing behavior and volatility support selected boiler-water, condensate and polymer-processing applications when the treatment is matched to the process. The N-OH functionality participates in oxidation-reduction and radical reactions, while concentration, temperature, pH and formulation determine the practical rate and result.

CAS No: 3710-84-7
EC No: 223-055-4
Molecular formula: C4H11NO
Molecular weight: 89.14 g/mol
Appearance: Clear, colorless to yellow liquid, depending on the supplied product
Odor: Characteristic amine-like odor
Commercial forms: Concentrated material and nominal 85 % w/w aqueous solution
Density, representative 85 % solution: Approximately 0.902 g/cm³ at 20 °C
Flash point, representative 85 % solution: Approximately 46.5 °C, closed cup
Water compatibility: Water-soluble, with the supplied form specified separately

WHAT IS DIETHYLHYDROXYLAMINE?

Diethylhydroxylamine (DEHA) is an N,N-dialkylhydroxylamine used to consume dissolved oxygen or reactive radicals in suitable industrial formulations. N,N-Diethylhydroxylamine, CAS 3710-84-7, is supplied both as concentrated material and in water, so its chemical identity must be distinguished from the concentration of a commercial solution.

In boiler treatment, DEHA is used to address residual oxygen after physical deaeration. In synthetic rubber manufacture, it can function as a short-stopping ingredient that helps terminate a radical polymerization at the selected stage. These are distinct applications with different dose calculations and acceptance criteria.

An established commercial manufacturing route reacts triethylamine with a peroxide, followed by purification and distillation. This describes an industrial production route, not an instruction to combine the starting materials in an uncontrolled operation.

Commercial selection depends on active content, water, impurity profile and the intended application. A nominal 85 % solution is not neat DEHA, and a formulated oxygen-scavenger product may also contain catalysts or neutralizing amines. One product's flash point, boiling behavior or storage limit must not be transferred automatically to another.

Diethylamine, diethylaminoethanol and hydroxylamine salts are different substances. The abbreviation DEHA is also used for a chemically unrelated adipate plasticizer, making the full name and CAS number important on orders. N,O-diethylhydroxylamine is a different structural isomer from the N,N compound discussed here.

COMMON PRODUCT & CHEMICAL NAMES OF DIETHYLHYDROXYLAMINE:

Diethylhydroxylamine
N,N-Diethylhydroxylamine
DEHA
N-Hydroxydiethylamine
N-Ethyl-N-hydroxyethanamine
Ethanamine, N-ethyl-N-hydroxy-
Hydroxylamine, N,N-diethyl-
Diethylhydroxylamine 85 % aqueous solution
Anhydrous diethylhydroxylamine

The N,N designation places both ethyl groups on nitrogen. DEHA is a convenient abbreviation but is not unambiguous across all chemical industries. The last two entries describe supplied forms, not separate identities for the active molecule.

A solution assay and solvent composition must accompany the name when relevant. Reference-standard identifiers and database codes do not establish a bulk product's concentration or application suitability.

CAS NO, EC / EINECS NO AND CHEMICAL IDENTIFICATION OF DIETHYLHYDROXYLAMINE

Product name: Diethylhydroxylamine
Common abbreviation: DEHA
Chemical name: N,N-Diethylhydroxylamine
Alternative chemical name: N-Ethyl-N-hydroxyethanamine
CAS No: 3710-84-7
EC / EINECS No: 223-055-4
Molecular formula: C4H11NO
Molecular weight: 89.14 g/mol
Chemical class: N,N-Dialkylhydroxylamine
Main functions: Oxygen scavenger, radical scavenger and reducing formulation component

Formula and molecular weight describe the active compound, not the complete composition of an aqueous blend. REACH registration information exists for N,N-diethylhydroxylamine, while the relevant supplier coverage and identified uses must be confirmed for the material actually offered.

CHEMICAL STRUCTURE AND MOLECULAR PROPERTIES OF DIETHYLHYDROXYLAMINE

The structure (C2H5)2N-OH contains two ethyl groups bonded to nitrogen and a hydroxyl group bonded through oxygen. It is not an amino alcohol with a hydroxyl group on a carbon chain. The N-OH unit is central to DEHA's reducing and radical-scavenging chemistry.

Oxidation can proceed through different intermediates and products according to the reaction environment. The molecule's relatively small size and volatility help explain its use in steam-water systems, but distribution between water and vapor is process-dependent.

HOW DOES DIETHYLHYDROXYLAMINE WORK AT THE MOLECULAR LEVEL?

As a reducing agent, DEHA reacts with oxygen in an appropriate aqueous environment. Reaction rate depends on temperature, pH, catalysts and contact time, so oxygen-scavenging capacity alone does not establish rapid performance in cold feedwater.

In suitable ferrous systems, DEHA treatment can promote a protective magnetite surface condition. Passivation is not the same as removing hardness or preventing every deposit. It also does not repair an air leak or replace the plant's required water-chemistry controls.

During radical polymerization, N,N-diethylhydroxylamine can help interrupt reactive radical processes. Short stopping is intended to limit further polymerization at a selected stage, not to initiate polymerization or guarantee permanent stability under every storage condition.

Main functions:

Consumption of dissolved oxygen in designed treatment programs
Radical scavenging and polymerization short stopping
Support of passivation in appropriate iron-based systems
Reduction or oxidation control in selected industrial blends

Volatility can help carry the active substance into steam and condensate, but it does not ensure identical protection throughout an entire circuit. Carbonic-acid corrosion and condensate pH may require a separately designed neutralizing-amine program.

PHYSICAL AND CHEMICAL PROPERTIES OF DIETHYLHYDROXYLAMINE

Representative properties of a nominal 85 % aqueous product:

Physical appearance: Yellow or colorless-to-yellow liquid
Active concentration: Nominally 85 % w/w, with the actual assay specified at purchase
Density: Approximately 0.902 g/cm³ at 20 °C
Flash point: Approximately 46.5 °C, closed cup
Boiling behavior: A published range is 125-130 °C at atmospheric pressure, with decomposition noted
Water compatibility: Soluble in water
Refractive index: Approximately 1.4183 at 25 °C in representative technical data

Concentrated material is separately described in manufacturer data, with a representative density near 0.869 g/cm³ at 20 °C. These two densities must not be treated as contradictory values for one specified product. Water, assay and impurities affect mixture properties.

The molecular weight of 89.14 g/mol is used for active DEHA calculations. A kilogram of a nominal 85 % solution contains approximately 0.85 kg active material, not one kilogram. A density-based dosing conversion additionally requires the actual solution density at the relevant temperature.

Boiling-point data carrying a decomposition note are not a recommendation for atmospheric distillation or prolonged heating. Freezing points and vapor-pressure values also require product identity and test conditions. No universal freezing-point or numerical pH specification is assigned to every DEHA product.

Appearance and color are useful controls but do not prove active content. Define an appropriate assay and, where relevant, water and impurity measurements. A calculated concentration is not a replacement for analysis after storage or formulation.

These properties are descriptive examples rather than acceptance limits. For the offered concentration, impurities, storage limits and test methods, please contact Ataman Kimya.

OXYGEN CONTROL AND CONDENSATE PROTECTION WITH DIETHYLHYDROXYLAMINE

Select DEHA treatment after defining dissolved-oxygen loading, deaerator performance, water flow, contact time, metallurgy and the plant's chemistry program. Medium- and high-pressure boiler applications are documented, but that does not establish one universal pressure threshold or suitability for every steam generator.

A product-feed calculation must distinguish active DEHA demand from supplied solution demand. For a defined active requirement, the required mass of an 85 % solution is the active mass divided by 0.85. The actual demand must still be established by the treatment design and monitoring.

Dissolved oxygen, treatment residual and corrosion indicators answer different questions. An oxidation-reduction potential reading alone does not identify the remaining oxygen or prove that all surfaces are protected. Verify performance using the analytical methods and sampling locations selected for the installation.

SECTORS AND INDUSTRIAL APPLICATIONS OF DIETHYLHYDROXYLAMINE

Documented areas of use:

Industrial boiler-water and condensate treatment
Styrene-butadiene rubber and selected polymer processes
Photographic chemical formulations
Selected microelectronics residue-removal formulations

DIETHYLHYDROXYLAMINE IN BOILER-WATER TREATMENT

Purpose: Reduce residual dissolved oxygen and related corrosion risk.
Function: React as an organic oxygen scavenger within a treatment program.
Performance effect: Can support oxygen control and appropriate ferrous-surface passivation.
Limitations: Kinetics, air ingress, metallurgy, pH and residual monitoring remain important.

DIETHYLHYDROXYLAMINE IN POLYMER PROCESSING

Purpose: Limit radical polymerization at the required stage.
Function: Act as a radical-scavenging short-stopping ingredient.
Performance effect: Can help control continued conversion in a validated process.
Limitations: Monomer chemistry, initiator system, temperature and addition timing determine suitability.

DIETHYLHYDROXYLAMINE IN PHOTOGRAPHIC AND ELECTRONIC FORMULATIONS

Purpose: Provide selected reducing or oxidation-control functions.
Function: Participate in a formulated developer or residue-removal system.
Performance effect: Can contribute to the intended processing response.
Limitations: Compatibility, contamination, final composition and substrate effects must be demonstrated for the actual blend.

WHICH PROBLEMS CAN DIETHYLHYDROXYLAMINE HELP SOLVE?

Residual oxygen after deaeration
DEHA can provide chemical polishing when reaction conditions and contact time are suitable.

Continued radical conversion after the desired polymer endpoint
A validated short-stopping procedure can limit further reaction, but it is not a substitute for process emergency controls.

Incorrect comparison of concentrated and diluted supplies
An active-basis mass balance helps compare required product quantities without assuming equal-mass performance.

Unclear scope of a corrosion-treatment claim
Separating oxygen removal, passivation, pH control and scale control prevents one ingredient from being assigned all functions.

THINGS TO CONSIDER WHEN USING DIETHYLHYDROXYLAMINE

A frequent mistake is treating an 85 % solution as though all measured properties and dose rates belonged to neat material. Another is assuming that replacing hydrazine makes the new formulation harmless.

Confirm the supplied form and active-content basis.
Use the actual product density for volume-to-mass conversions.
Measure oxygen-removal kinetics at the relevant conditions.
Separate oxygen scavenging from scale and carbonic-acid control.
Check compatibility with catalysts, metals and other treatment ingredients.
Control air exposure and avoid contamination by oxidizers.
Reassess the final mixture's hazards and transport classification.
Validate the intended steam end use before commercial application.

The organic hydroxylamine is flammable and requires exposure control. Use appropriate ventilation, eye protection, protective clothing and gloves selected for the full formulation. Low-inorganic-solids chemistry is not a general exemption from blowdown, carryover or water-quality requirements.

INITIAL FORMULATION APPROACHES FOR DIETHYLHYDROXYLAMINE

The examples below translate published oxygen-scavenger component levels into complete laboratory mass balances. Percentages are w/w of concentrate, not ppm in boiler water. They are starting points for evaluation, not commercially validated recipes, operating instructions or evidence of approval for food-contact steam.

EXAMPLE 1: DIETHYLHYDROXYLAMINE WITH A TANNIN ACTIVATOR

Components:

Diethylhydroxylamine, nominal 85 % aqueous solution: 23.53 %
Water-soluble mimosa tannin, dry-solids basis: 5.00 %
Demineralized water: 71.47 %
Total: 100.00 %

This calculated balance gives approximately 20 % active DEHA, 5 % tannin and 75 % total water, corresponding to a published aqueous composition and approximately 4:1 active-DEHA-to-tannin ratio. The small active-content difference comes from rounding. Adjust for actual tannin solids and DEHA assay rather than assuming every commercial extract is equivalent.

Evaluation criteria:

Solubility, sediment and storage stability
Oxygen-removal rate at controlled temperature and pH
Residual measurement and tannin-related analytical interference
Color and compatibility with the intended treatment system
Corrosion response under representative test conditions

Safety note: Assess the final mixture and control exposure during preparation. Tannin introduces a nonvolatile component, so this blend must not be described as an entirely volatile or solids-free treatment.

EXAMPLE 2: DIETHYLHYDROXYLAMINE WITH HYDROQUINONE AND A NEUTRALIZING AMINE

Components:

Diethylhydroxylamine, nominal 85 % aqueous solution: 35.00 %
Hydroquinone: 2.00 %
Diethylaminoethanol: 10.00 %
Demineralized water: 53.00 %
Total: 100.00 %

The active-basis composition is 29.75 % DEHA, 2 % hydroquinone, 10 % neutralizing amine and 58.25 % total water. The active component levels follow a published experimental approach, while the water balance is calculated to 100 %. The neutralizing amine supplies a separate function, and the historical experiment does not establish a dose for a particular boiler.

Evaluation criteria:

Blend clarity and stability
Oxygen-removal kinetics compared with suitable controls
Residual DEHA and pH-monitoring response
Compatibility with the site's metallurgy and water program
Storage behavior and the complete mixture's safety classification

Safety note: Hydroquinone and diethylaminoethanol add their own hazards. Establish ingredient compatibility and preparation controls before testing, and do not apply the raw DEHA classification to the finished blend.

DIETHYLHYDROXYLAMINE SIMILAR PRODUCTS AND ALTERNATIVES

Compare reaction kinetics, volatility, metallurgy, decomposition behavior, monitoring and final-use requirements rather than selecting only by price or nominal oxygen capacity.

DIETHYLHYDROXYLAMINE AND SODIUM SULFITE

Sulfite is an inorganic oxygen scavenger with different reaction chemistry and dissolved-solids consequences. It is not an equal-mass replacement for DEHA, particularly where boiler pressure and water purity constrain treatment selection.

DIETHYLHYDROXYLAMINE AND CARBOHYDRAZIDE

Carbohydrazide is a different reducing treatment chemistry. Product formulation, temperature response, reaction products and the plant's requirements must be compared before substitution.

DIETHYLHYDROXYLAMINE AND HYDRAZINE

Hydrazine has a different hazard and regulatory profile. DEHA is a possible alternative in selected programs, but substitution requires technical and safety validation rather than a blanket claim of harmlessness.

DIETHYLHYDROXYLAMINE AND NEUTRALIZING AMINES

Neutralizing amines address condensate acidity and pH. They may complement an oxygen scavenger but do not automatically replace its oxygen-removal function.

Confirm any change through controlled testing and review of the complete treatment program.

QUALITY CONTROL AND PURCHASING CRITERIA FOR DIETHYLHYDROXYLAMINE

Specify the application and supplied concentration before comparing offers. Equal container mass does not imply equal active content or equal treatment performance.

Information to clarify before purchase:

Full chemical name and CAS identity
Concentrated material, 85 % solution or formulated blend
Active assay, method and reporting basis
Water and relevant impurity limits
Color, clarity and acceptance conditions
Density and flash point with temperature or test method
Compatibility and application-specific performance evidence
Current local safety and dangerous-goods documentation
Packaging, shelf life, origin and batch traceability
Supply-chain regulatory coverage and intended end use

A COA reports batch results or conformity, technical information describes the product, and an SDS addresses hazards and transport. Neither the common name nor a general industrial application establishes authorization for drinking water, direct food use, medicine or a particular food-contact steam application.

Active content, impurity control, packaging, testing and dangerous-goods logistics affect the quotation. For the offered specification and current supply conditions, please contact Ataman Kimya.

STORAGE AND HANDLING OF DIETHYLHYDROXYLAMINE

Store in tightly closed, compatible packaging in a cool, shaded and ventilated location away from heat and ignition sources. Control air exposure and use a properly designed inert-gas arrangement where required by the product instructions. Concentrated and aqueous materials need their own storage specification.

Separate from oxidizing agents and prevent incompatible metal contamination. Select equipment and seals using compatibility data for the actual mixture. For the supplied storage temperature, shelf life and packaging requirements, please contact Ataman Kimya rather than assuming one universal limit.

Reviewed documents for concentrated and approximately 85 % aqueous products assign UN 1993, FLAMMABLE LIQUID, N.O.S., Class 3, Packing Group III. Include the required technical name and apply the rules for the actual consignment. A different blend or dilution needs its own classification.

Contain leaks with compatible absorbent and keep liquid and cleanup water out of drains. Control ignition sources and collect contaminated materials for authorized disposal. Inspect long-stored product for appearance changes and verify critical specifications before sensitive use.

SAFETY INFORMATION OF DIETHYLHYDROXYLAMINE

Reviewed EU supplier documents include H226, flammable liquid and vapor, H312 and H332, harmful in contact with skin or if inhaled, H315, causes skin irritation, H319, causes serious eye irritation, and H371, may cause damage to organs, identifying the nervous system. Jurisdiction and supplied formulation can change classification, so the current local label must be confirmed for the actual product.

Claims that DEHA is nontoxic or universally noncarcinogenic are not an adequate basis for handling. Use closed transfer or effective local extraction, chemically suitable gloves and splash protection. Respiratory protection must follow the workplace assessment and must not replace control of vapor and mist.

After skin contact, remove contaminated clothing and rinse thoroughly with water. Flush exposed eyes promptly, remove contact lenses if easy and obtain medical advice. Move an inhalation casualty to fresh air without exposing rescuers and seek medical assistance. After swallowing, rinse the mouth, do not induce vomiting and obtain medical advice.

Fire or decomposition can generate carbon oxides, nitrogen oxides and hazardous fumes. Use suitable foam, dry powder, carbon dioxide or water spray according to the site response plan. Firefighters require appropriate respiratory protection, and contaminated firewater must be controlled.

The ability to consume oxygen is not proof of environmental safety. Prevent discharge of unused product and spent mixtures, and account for other ingredients and contaminants when assigning waste treatment.

SUPPLY OF DIETHYLHYDROXYLAMINE FROM ATAMAN KIMYA

Ataman Kimya can be contacted to evaluate DEHA supply for industrial oxygen control, polymer processing and selected formulated chemical uses. Confirm active content, impurities, packaging, application requirements and documents before matching a product to the process.

Useful quotation details:

Application and destination market
Required active concentration and solvent composition
Assay and critical impurity limits
Relevant temperature, metallurgy and treatment constraints
Estimated quantity and packaging preference
Quality, safety, transport and end-use documents required

FREQUENTLY ASKED QUESTIONS ABOUT DIETHYLHYDROXYLAMINE

What is diethylhydroxylamine?
An organic hydroxylamine used as an oxygen scavenger, radical scavenger and reducing formulation component.

What is its CAS number?
3710-84-7.

What is its EC number?
223-055-4.

What are its formula and molecular weight?
C4H11NO and approximately 89.14 g/mol for the active compound.

Is every DEHA product an 85 % solution?
No. Concentrated material and formulated or diluted products are also supplied.

Does the abbreviation always identify the hydroxylamine?
No. It is also used for an unrelated adipate plasticizer, so confirm the CAS number.

Is DEHA the same as diethylaminoethanol?
No. Their structures and principal treatment functions differ.

Does volatility guarantee protection of the whole steam circuit?
No. Distribution, reaction conditions, air ingress and condensate chemistry remain important.

Does oxygen scavenging prevent scale?
Not by itself. Hardness, deposits and scale require their own treatment controls.

Can it replace neutralizing amines?
It does not automatically provide the same condensate-pH and carbonic-acid control.

Is the 85 % solution nonflammable because it contains water?
No. Representative documents classify it as a flammable liquid.

How is an active requirement converted to 85 % solution mass?
Divide the required active mass by 0.85, then use the actual assay if it differs.

Are the example concentrate percentages boiler-water dosing rates?
No. Concentrate composition and the applied treatment dose are separate quantities.

Can a short stopper replace a polymerization emergency system?
No. Its validated process function does not establish emergency protection.

Does a single oxygen-capacity ratio define the correct dose?
No. Reaction conditions, treatment residual and system loading must also be evaluated.

What is the transport identification in the reviewed documents?
UN 1993, FLAMMABLE LIQUID, N.O.S., Class 3, Packing Group III for the products described there.

Is direct food or cosmetic use established by the industrial applications?
No. Each end use requires specific supporting evidence and applicable authorization.

What should be requested when purchasing?
A batch COA, current technical and safety information, the actual active-content specification and relevant transport and end-use documents.

DIETHYLHYDROXYLAMINE - TECHNICAL SUMMARY

Diethylhydroxylamine is the N,N-substituted organic hydroxylamine identified by CAS 3710-84-7 and EC 223-055-4. The active molecule has formula C4H11NO and molecular weight approximately 89.14 g/mol.

Concentrated material and an 85 % aqueous solution are distinct supply forms. Assay, water and impurities determine the real composition, and physical properties must retain their product and test conditions.

Documented uses include industrial oxygen scavenging, radical short stopping and selected photographic or electronic formulations. Performance depends on the actual chemistry and cannot be inferred from the ingredient name alone.

Oxygen removal, passivation, scale control and condensate-pH management are separate functions. Published formulation approaches provide a basis for laboratory evaluation but do not establish a universal dose, a complete treatment program or end-use approval.

Flammability, exposure hazards and product-specific transport classification require control. For the offered specification, current documents and supply conditions, please contact Ataman Kimya.

Diethylhydroxylamine can be sourced from ATAMAN KİMYA. For further information and supply inquiries about Diethylhydroxylamine, please contact ATAMAN KİMYA.