Trimer Acid
Synonyms
Fatty acids, C18-unsatd., trimers;
Category
Anionic Surfactant
> Carboxylate
>> Dimer Acid and Trimer Acid Salt
Chemical Numbering System
CAS: 68937-90-6
EINECS: 500-239-5
Molecular Formula & Molecular Weight
Molecular Formula: N/A
Molecular Weight: N/A
Structure
Properties
Appearance (1), brown to black liquid.
Odor smell of grease.
Solubility insoluble in water. soluble in ethyl ether.
Stability stable. Easily oxidized.
Risk Liquid 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 lubricating, anticorrosive, antirust, emulsifying, dispersing, solubilizing abilities.
Synthesis
Quality Standards & Test Methods
1, Physical and chemical indexes
|
Item |
Physical and chemical indexes |
|
Liquid |
|
|
Actives, %, ≥ |
98.0 |
Test Methods
(1), Actives
GB/T 13173 Surface active agents -- Detergents -- Testing methods
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.
Major Uses
1, Typical applications
Use as lubricant.
Use as emulsifying agent, dispersing agent.
2, Organic synthesis
Widely used in preparation of trimer acid ester. Trimer acid ester can be used in lubricants, etc.
Widely used in preparation of polyamide.
3, Machinery industry
Lubricant, antirust agent in metalworking fluid.
Extreme pressure agent, anti-friction agent in lubricant oils.
4, Petroleum
Corrosion inhibitor in oil field.
Manufacturers
Update: 20131102(1); 20180530(2);