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N-Stearoyl-L-glutamic acid

Time:2013-08-18 08:13:27; Reading: 23

N-Stearoyl-L-glutamic acid

Synonyms

Stearoyl glutamic acid;

L-Glutamic acid, N-(1-oxooctadecyl)-;

Stearoylglutamic acid;

Category

Anionic Surfactant

> Carboxylate

>> Acyl Amino Acid Salt

>>> Fatty Acyl Amino Acid Salt

>>> Linear Alkyl Acyl Amino Acid Salt

Chemical Numbering System

CASRN:3397-16-8

EINECS:222-252-2

Molecular Formula & Molecular Weight

Molecular Formula: C23H43NO5; C23H43N1O5

Molecular Weight: 413.59

Structure

Properties

Appearance    (1), solid.

Solubility    slightly 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 (Rev.10) label:  

Animal Toxicity

Table 1 Animal toxicity values

rat oral LD50

3000mg/kg[1]

Ecology    may be hazardous to environment. Water body should be given special attention.

Biodegradability    biodegradable.

Characteristics    excellent cleansing, emulsifying, dispersing, wetting, solubilizing, anticorrosive, antirust, lubricating, permeating, foam stabilizing abilities. Mild surfactant. Good compatibility. Resistance to hard water. Suitable for preparation of “non-sulfate” formula.

Note    (1), Can be used in children cleaning products.

Synthesis

 

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 cleansing agent.

Use as emulsifying agent, dispersing agent.

Use as wetting agent.

2, Personal care products

Conditioning agent, cleansing 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

 

References

[1]: ChemIDplus. 3397-16-8, Glutamic acid, N-stearoyl-

Update: 20181209(1);

Document

[Terminology] Dispersion system

[Terminology] Vesicle

Pandect of Ester surfactants (1): Definition

[Terminology] Van Der Waals force

[Terminology] Micellar aggregation number

Standard

Test methods of surfactants, catalog, Chinese national standards

Surfactants, catalog, Chinese national standards

Test methods of materials, catalog, Chinese national standards

Basic standards of materials, catalog, Chinese national standards

Test methods of textile auxiliaries, catalog, Chinese national standards