Fatty Alcohol Ether Sulfates (FAES)

FAES are produced by sulfation of alcohol ethoxylate with SO3. The resultant sulfo acid is neutralized with sodium hydroxide or ammonia. During neutralization water is added to dilute to 70% or 28% active as required. Naming convention is Sodium Laureth-1 Sulfate, where Laureth-1 indicates 1 mole ethoxylate of lauryl alcohol.

Products Available
Chemical Name
SDS/ Product Infomation (PI)
Sodium Laureth-1 Sulfate
200L drums, 1000L IBC, 20,000L Road Tanker
Sodium Laureth-2 Sulfate
200L drums, 1000L IBC, 20,000L Road Tanker
Sodium Laureth-3 Sulfate
200L drums, 1000L IBC, 20,000L Road Tanker
Sodium Laureth-2 Sulfate
200L drums, 1000L IBC, 20,000L Road Tanker
Ammonium Laureth-3 Sulfate
200L drums, 1000L IBC
Gardinol XEFA70AU
Fatty Alcohol Ether Sulfate
200L drums, 1000L IBC, 20,000L Road Tanker
Surfactant Type
Detergency/Cleansing Capacity
Flash Foaming
High flash foam, low foam stability. Flash foaming decreases with increasing ethoxylation
Electrolyte Tolerance
Salt Viscosity Building
At 1 mole ethoxylates: High | At 2 mole ethoxylate: Medium to High | At 3 mole ethoxylate: Low to Medium | Synergistic thickening when combined with betaine of amine oxide.
Skin Mildness
Less irritating than Sodium Lauryl Sulfate | Mildness increases with increasing level of ethoxylation.
Sustainability Information
Biodegradable according OECD “Ready Biodegradability” tests 301, 301D or 301E. Technically equivalent test to ISO 10707 | Fatty Alcohol is derived from Palm Kernal Oil. | RSPO Mass Balance grade available for all products.
pH Stability
Sodium salts:pH 6 to 14 | Ammonium Salts:pH 4 to 7 (Emit ammonia fumes above pH 7.)
Sodium v Ammonium Salts
Ammonium salts are milder, have higher electrolyte tolerance and are stable at lower pH. | Sodium salts are stable up to pH 13.
Hydrolyse if heated above 60°C irrespective of pH | If pH is less than 3 will undergo acid hydrolysis | Molecule degrades to alcohol ethoxylate and sulfuric acid. | Fast reaction so sudden drop in pH is sign hydrolysis is occurring. | Once hydrolysis starts it is very difficult to stop.
Phase Structure Low Active (less than 28%)
Cear low viscosity solutions, miscible with water and easily pumped.
Phase Structure M Phase (28 – 64%)
Solid gel, impossible to pump or mix.
Phase Structure High Active (66 to 82%)
Thixotropic gel which is shear thinning. Easily pumped with mono or lobe pump
High Active
More cost effective & less storage space per kg of active | Solidify at low temperatures | Batch dilution needs to be done carefully to avoid formation of M Phase gel. | Self-preserving so no preservative added.
Low Active
Miscible with water, so fast batch dissolution time. | Contain added preservative due to water content.
High Active Solidification Sodium Laureth-1 Sulfate
Less than 20°C
High Active Solidification Sodium Laureth-2 Sulfate
10 to 14°C
High Active Solidification Sodium Laureth-3 Sulfate
6 to 12°C
High Active Solidification other notes:
If product solidifies it must be warmed gently and not exposed to heat sources with temperature greater than 60°C. Use of steam will almost certainly cause degradation via hydrolysis.

For full specifications and related products please contact us

Product Description

Introducing Fatty Alcohol Ether Sulfates (FAES), a group of anionic surfactants that are widely used in personal care and detergent applications as a substitute for sodium lauryl sulfate (SLS). FAES exhibit similar cleansing and foaming properties as SLS, but with a milder and less irritating effect on the skin.

FAES are derived from natural fatty alcohols and ethylene oxide, making them an environmentally-friendly alternative to traditional sulfates. They are highly soluble in water and offer excellent emulsifying and wetting properties, making them a popular choice for various formulations.

It is suitable for use in low pH products and offers good salt viscosity build. Upgrade your formulations with FAES and experience the benefits of a more sustainable and skin-friendly surfactant.

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