PEG Stearamide Carboxylic Acid
Synonyms
Polyoxyethylene stearamide ether carboxylic acid;
Category
Anionic Surfactant
> Carboxylate
>> Polyether Carboxylate
>>> Amide Polyether Carboxylate
>>>> Linear Alkyl Amide Polyoxyethylene Ether Carboxylate
Chemical Numbering System
CAS: 90453-59-1
EINECS: N/A
Molecular Formula & Molecular Weight
Molecular Formula: N/A
Molecular Weight: N/A
Structure
Properties
Appearance (1), slightly yellow to yellow waxy solid.
Solubility slightly soluble to 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, wetting, solubilizing, lubricating abilities. Low foaming. Good compatibility. Can be compounded with cationic surfactants without affecting each other. Mild surfactant. Performance varies with EO number. When used as auxiliary emulsifying agent, can maintain stability of emulsion.
Note (1), 1,4-dioxane generated during polyether preparation: probable carcinogen. However, can be acceptable when concentration of 1,4-dioxane is less than 30ppm or less.
Synthesis
(1), Chloroacetic acid process (Discontinuous process)
PEG stearamide react with chloroacetic acid, sodium hydroxide, and neutralized by hydrochloric acid, then obtained.
The residual amount of sodium chloroacetate should be controlled in this process.
Quality Standards & Test Methods
1, Physical and chemical indexes
|
Item |
Physical and chemical indexes |
|
Solid |
|
|
Actives, %, ≥ |
80.0 |
|
NaCl*, %, ≤ |
2.0 |
|
Sodium chloroacetate*, ppm, ≤ |
20 |
|
pH (25°C, 1% solution) |
2.0 - 4.0 |
|
*: Only applicable to products using chloroacetic acid process. |
|
Test Methods
(1), Actives
GB/T 13173 Surface active agents -- Detergents -- Testing methods
GB/T 5173 Surface active agents and detergents -- Determination of anionic-active matter by direct two-phase titration procedure
ISO 2271 Surface active agents -- Detergents -- Determination of anionic-active matter by manual or mechanical direct two-phase titration procedure
(2), NaCl
QB/T 2950 Alkylpolyethoxy Carboxylate
(3), Sodium chloroacetate
QB/T 2950 Alkylpolyethoxy Carboxylate
(4), 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 |
|
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 solubilizing agent.
Use as lubricant.
2, Personal care products
Cleansing agent, emulsifying agent in personal care products.
3, Household detergents
Cleansing agent in household cleaning products.
4, Machinery
Cleansing agent, lubricant, antirust agent in water-based metalworking fluids.
5, Industrial cleaning
Cleansing agent in industrial cleaning.
6, Textile, leather
Cleansing agent, degreasing agent in textile, leather.
Product members
PEG-2 Stearamide Carboxylic Acid;
PEG-9 Stearamide Carboxylic Acid;
Manufacturers
Update: 20131111(1); 20181202(2);