Disodium lauroamphodiacetate
Synonyms
Glycine, N-(2-(carboxymethoxy)ethyl)-N-(2-((1-oxododecyl)amino)ethyl)-, disodium salt;
Category
Zwitterionic Surfactant
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Chemical Numbering System
CAS: 68298-20-4
EINECS: 269-546-7
Molecular Formula & Molecular Weight
Molecular Formula: C20H36N2Na2O6; C20H38N2O6.2Na
Molecular Weight: 446.49
Structure
Schematic formula:
Properties
Appearance (1), colorless to amber viscous liquid.
Solubility soluble in water.
Stability stable.
Risk Liquid form: irritation, low irritation to skin, eye.
GHS label: 
Ecology may be hazardous to environment. Water body should be given special attention.
Biodegradability biodegradable.
Characteristics excellent emulsifying, dispersing, foaming, foam stabilizing, antistatic, solubilizing, wetting, permeating, anticorrosive abilities. Mild surfactant. Can reduce the irritation of the other surfactants. Resistance to hard water. Excellent compatibility.
Note (1), Can use in children washing products.
Synthesis
Residual content of amine and chloroacetic acid should be controlled.
Quality Standards & Test Methods
1, Physical and chemical indexes
|
Item |
Physical and chemical indexes |
|
Liquid |
|
|
Actives, %, ≥ |
30.0 |
|
pH (25°C, 1% solution) |
7.0 - 10.0 |
Test Methods
(1), Actives
GB/T 13173 Surface active agents -- Detergents -- Testing methods
(2), pH
GB/T 6368 Surface active agents -- Determination of pH of aqueous solution -- Potentiometric method
ISO 4316 Surface active agents -- Determination of pH of aqueous solutions -- Potentiometric method
2, Hazardous substances indexes
|
Item |
Hazardous substances indexes |
|
Liquid |
|
|
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 foaming agent, foam stabilizing agent.
Use as thickening agent.
Use as antistatic agent.
Use as wetting agent.
Use as anticorrosive agent.
2, Personal care products
Conditioning agent, antistatic agent, foam boosting agent, cleansing agent, foaming agent, hydrotrope, viscosity controlling agent in personal care products.
3, Textile
Antistatic agent, softening agent in textile, leather, fiber.
4, Household detergents
Thickening agent, foaming agent, foam stabilizing agent in household cleaning.
5, Industrial cleaning
Thickening agent, foaming agent, foam stabilizing agent in industrial cleaning, vehicle cleaning.
Manufacturers
Update: 20140724(1); 20190721(2);