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Steareth-25 is a fatty alcohol that functions as an emulsifier and surfactant in cosmetics.
Steareth-25 may be plant- or animal-derived or made synthetically.
Steareth-25 also helps to keep ingredients soluble within a formula, allowing them to remain dispersed evenly throughout an emulsion.
CAS: 68439-49-6
MF: C18H38O
MW: 0
EINECS: 939-518-5
Steareth-25 is a non-ionic polyoxyethylene ether of higher saturated fatty alcohols (cetyl/stearyl alcohol).
Steareth-25 is available as a white, waxy solid.
Steareth-25 is used as an emulsifier in oil/water emulsions.
Steareth-25 is compatible with all kinds of oils & active ingredients, is a very effective protective colloid that stabilizes all kinds of dispersed systems, and can be combined with other emulsifiers, optimal use with gel-forming thickeners.
Compared to Steareth-20, Steareth-25 has a bit more gel-forming and thickening properties.
Steareth-25's chemical formula is C18H38O.
Steareth-25 is one of several ceteareths deemed safe as used in cosmetics.
Concentration ranges from 1.3–10% depending on the type of formula and desired aesthetics; lower amounts may also be used, especially if Steareth-25 is part of a blend.
Steareth-25 is a non-ionic polyoxyethylene ether of higher saturated fatty alcohols (cetyl/stearyl alcohol).
HLB value 16 (gives oil-in-water emulsions).
Universal emulsifier to make o/w emulsions.
Compatible with all kinds of oils & active ingredients.
Very effective protective colloid that stabilizes all kinds of dispersed systems.
Can be combined with other emulsifiers.
Optimal use with gel-forming thickeners.
Compared to Steareth-20, Steareth-25 has a bit more gel-forming and thickening properties.
Steareth-25 is a non-ionic surfactant, which is a mixture of cetyl and stearyl alcohols ethoxylated with 25 moles of ethylene oxide.
The full chemical name of Steareth-25 is C16-18 alcohols, ethoxylated.
The specific numerical designation that uniquely identifies chemical compounds, the CAS number, for Steareth-25 is 68439-49-6.
Steareth-25 can be obtained from natural raw materials.
Steareth-25 is a surfactant made from cetearyl alcohol, which can be derived from animals (not used by ecostore), synthetically produced, or made from plants oils such as coconut and palm.
The '25' in the name refers to the number of ethylene oxide units in the molecule.
Steareth-25 is an non-ionic polyoxyethylene ether of higher saturated fatty alcohols (cetyl/stearyl alcohol).
White grains/pellets, no odor.
Dissolves in water & alcohol to form a colloid solution.
Steareth-25 can be mixed with mineral, vegetable or synthetic fats and oils.
Steareth-25 is universal emulsifier to make o/w emulsions, compatible with all kinds of oils & active ingredients, very effective protective colloid that stabilizes all kinds of dispersed systems, can be combined with other emulsifiers, optimal use with gel-forming thickeners.
Compared to Steareth-20, Steareth-25 has a bit more gel-forming and thickening properties.
Typical use level 0.5-3% (up to 30% to make gel-like hydrates).
Steareth-25 should be used for external use only.
The physical and chemical properties of Steareth-25:
Appearance: white solid with the consistency of a wax,
Faint, distinctive odour,
Good solubility in hot water,
Sensitive to pH changes (stable at low pH, hydrolyses at high pH),
Resistant to hard water,
Molar mass: approx. 1360 g/mol,
Density: approx. 1.020 g/ml (at a temperature of 60ᵒC),
Hydrophile-lipophile balance (HLB): approx 16,
Hydroxyl value: from 36 to 45 mg KOH/g,
Acid value: max. 1 mg KOH/g.
Uses
Steareth-25 is used as a solubilizing agent, emulsifier, cleansing agent, and surfactant in personal care.
As surfactant: Steareth-25 effectively removes impurities and dirt from the surface of the skin and hair.
The particles of Steareth-25 surround the contaminants, which detach from the cleaned surface and are then washed away.
Steareth-25 is also an effective foaming agent.
In addition, Steareth-25 is responsible for the stabilization of foam and improves its quality in a mixture with anionic surfactants
As emulsifier: Due to its strong hydrophilic nature, Steareth-25 is perfect for creating oil-in-water emulsions.
Due to its very good emulsifying properties, Steareth-25 can be used for the preparation of emulsions at room temperature
As solubilizer: Steareth-25 enables the incorporation of hardly soluble or water-insoluble ingredients into an aqueous solution, such as fatty substances, plant extracts or fragrances.
Steareth-25 has a strong softening, moisturizing and conditioning effect.
Steareth-25 reduces the itching and peeling of skin.
Steareth-25 maintains the level of moisture at the right level by creating an occlusive layer on the surface of the hair and skin, which prevents excessive evaporation of water.
The main application of Steareth-25, among others in cosmetics, is primarily based on its emulsifying properties.
Steareth-25 is due to the structure of the molecule typical for surfactants.
The vast majority of cosmetics have the form of an emulsion.
Steareth-25 is the effect of the presence of a significant amount of ingredients of different chemical characteristics in the composition of the cosmetic formulation.
Steareth-25, containing both a hydrophilic moiety (interacting strongly with water molecules) and a hydrophobic moiety (showing affinity for the oil phase), align at the phase boundary and, by reducing the surface tension, enable the combination of two immiscible phases (the water phase and the oil phase).
Due to its strong hydrophilic nature, Steareth-25 is perfect for creating oil-in-water emulsions. Due to its very good emulsifying properties, Steareth-25 can be used for the preparation of emulsions at room temperature.
Steareth-25 is especially important in the case of active substances that are not very resistant to high temperatures.
As a surfactant, Steareth-25 is an ingredient in cosmetic products with cleaning properties.
Steareth-25 effectively removes impurities and dirt from the surface of the skin and hair.
The particles of Steareth-25 surround the contaminants, which detach from the cleaned surface and are then washed away.
In cosmetics, Steareth-25 is an effective foaming agent.
In addition, Steareth-25 is responsible for the stabilization of foam and improves its quality in a mixture with anionic surfactants.
Another role of Steareth-25 is to modify the rheological properties in formulations containing anionic surfactants by creating so-called mixed micelles.
The modification of rheological properties is the change in the viscosity of the product.
Achieving the desired value of the viscosity of the cosmetic formulation allows for obtaining the right consistency, which will ensure good performance characteristics and stability of the product.
Changing the rheological properties of the cosmetic improves its consistency.
As a solubilizer, Steareth-25 enables the incorporation of hardly soluble or water-insoluble ingredients into an aqueous solution, such as fatty substances, plant extracts or fragrances, which constitute an integral part of every cosmetic.
Steareth-25 has a strong softening, moisturising and conditioning effect thanks to the properties typical for emollients.
Steareth-25 reduces the itching and peeling of skin.
Steareth-25 maintains the level of moisture at the right level by creating an occlusive layer on the surface of the hair and skin, which prevents excessive evaporation of water.
Apart from Steareth-25's main application in the cosmetics industry, this compound plays also an important role in detergents.
Steareth-25 is used as one of the ingredients in toilet tabs, also those that do not require plastic hangers.
Synonyms
Macrogol 20 Cetostearyl Ether
Alcohols, C16-18, ethoxylated
Cetomacrogol 1000
A 6
AT 11
Alfonic 1618-46
Alfonic 1618-60
Alfonic 1618-62
Alfonic 1618-78
Alfonic 1618-80
B 2050-01A
Berol 07
Brij 68
Brij CS 20
C16-18 alcohols, ethoxylated
C16-18 ethoxylated alcohols
C16-18 ethoxylated alcs
C16-18 fatty alcs., ethoxylated
CE 50; Cemulsol DB
Cetomacrogol
Cetomacrogol 1000BP
Cetostearyl alcohol ethoxylated
Cremophor A 25
Cresmer 1000
Disponil O 5
Disponil OC 5
Disponil TA 11
Disponil TA 14
Empilan KLA 6
Emuldac AS 11
Emuldac AS 25
Emuldac AS 80
Ethal 368
Ethal CSA 10
Ethal CSA 17
Ethal CSA 40/70
Ethoxylated C16-18 alcohol
Ethoxylated C16-18 alcs.
Ethoxylated C16-18 fatty alcohols
Ethoxylated alcohols, C16-18
Ethoxylated cetostearyl alcohol
Ethoxylated cetos
