Fatty acids, C18-unsatd., dimers
Synonyms
Dimer Acid;
C18-Unsatd. fatty acids dimers;
Fatty acid, C-18-unsaturated, dimers;
Category
Anionic Surfactant
> Carboxylate
>> Dimer Acid and Trimer Acid Salt
Chemical Numbering System
CAS: 61788-89-4
EINECS: 500-148-0
Molecular Formula & Molecular Weight
Molecular Formula: N/A
Molecular Weight: N/A
Structure
Properties
Appearance (1), pale yellow 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
Obtained by polymerization of C18-unsatd. fatty acids.
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 dimer acid ester. Dimer acid ester can be used in lubricants, etc.
Widely used in preparation of polyamide, epoxy resin. Dimer acid epoxy resin has excellent flexibility, sealability, water resistance and adhesion strength.
Widely used in preparation of dimer acid polymers. Dimer acid polymers can be used in paints, printing inks, etc.
Used in preparation of dimer acid salts. Dimer acid salts can be used in metalworking fluids, etc.
3, Machinery industry
Lubricant, antirust agent in semi-synthetic, fully synthetic metalworking fluid.
Extreme pressure agent, anti-friction agent in lubricant oils.
4, Petroleum
Corrosion inhibitor in oil field.
Manufacturers
Update: 20131102(1); 20180530(2);