Sodium Stearoyl Glutamate
Synonyms
L-Glutamic acid, N-(1-oxooctadecyl)-, monosodium salt;
N-(1-Oxooctadecyl)-L-glutamic acid, monosodium salt;
Sodium N-(1-oxooctadecyl)-L-glutamate;
Sodium N-stearoyl L-glutamate;
Sodium N-stearoylglutamate;
Category
Anionic Surfactant
> Carboxylate
>> Acyl Amino Acid Salt
>>> Fatty Acyl Amino Acid Salt
>>> Linear Alkyl Acyl Amino Acid Salt
Chemical Numbering System
CAS: 38517-23-6
EINECS: 253-980-9
Molecular Formula & Molecular Weight
Molecular Formula: C23H42NNaO5; C23H43N1O5.Na
Molecular Weight: 435.57
Structure
Properties
Appearance (1), white powder.
Solubility soluble in water.
Stability stable.
Risk Solid form: flammable material; irritation, irritation to skin, eye, respiratory system. Harmful products of combustion are CO, CO2 and so on. Contact with strong oxidants, can cause to burn.
GHS label: 
Ecology may be hazardous to environment. Water body should be given special attention.
Biodegradability biodegradable.
Characteristics excellent cleansing, emulsifying, dispersing, solubilizing, foam stabilizing, antirust, anticorrosive, wetting, permeating abilities. Under acid condition, has antistatic, antimicrobial capabilities. Good compatibility. Resistance to hard water. Mild surfactant. Suitable for preparation of “non-sulfate” formula. Can be used as a soap substitute.
Note (1), Can be used in children cleaning products.
Synthesis
Obtained that stearoyl chloride reacts with glutamic acid and sodium hydroxide.
Quality Standards & Test Methods
1, Physical and chemical indexes
|
Item |
Physical and chemical indexes |
|
Solid |
|
|
Actives, %, ≥ |
85.0 |
Test Methods
(1), Actives
GB/T 13173 Surface active agents -- Detergents -- Testing methods
2, Hazardous substances indexes
|
Item |
Hazardous substances indexes |
|
Solid |
|
|
Heavy metals (as Pb), mg/kg, ≤ |
20 |
|
As, mg/kg, ≤ |
3 |
Test Methods
(1), Heavy metals (as Pb)
Safety and Technical Standards for Cosmetics (2015 Edition)
GB/T 30799 The test method of food detergents -- Determination of heavy metals
(2), As
Safety and Technical Standards for Cosmetics (2015 Edition)
GB/T 30797 The test method of food detergents -- Determination of total arsenic
3, Further explanation
(a), On physical and chemical indexes: firstly, shall be indicated carbon atom distribution; secondly, shall be indicated average molecular weight.
(b), Used in cosmetics, should be test for harmful substances or furtherly test for microorganisms, according to local regulations and standards.
Major Uses
1, Typical applications
Use as emulsifying agent, dispersing agent.
Use as cleansing agent.
Use as wetting agent.
2, Personal care products
Cleansing agent, emulsifying agent, conditioning agent in personal care products. Good compatibility with skin, hair. Suitable for sensitive skin. Paste products are prepared by controlling the crystallization process.
3, Household detergents
Cleansing agent in household cleaning products.
4, Industrial cleaning agents
Auxiliary cleansing agent, antirust agent in industrial cleaning.
Manufacturers
Update: 20131124(1); 20181209(2);