2-Ethylhexanoic acid cobalt salt
Synonyms
Cobalt bis(2-ethylhexanoate);
Hexanoic acid, 2-ethyl-, cobalt(2+) salt;
2-Ethylcaproic acid, cobalt(2+) salt;
Hexanoic acid, 2-ethyl-, cobalt salt (2:1);
Category
Anionic Surfactant
> Carboxylate
>> Chain Carboxylate
>>> Alkyl Carboxylate
>>>> Branched Alkyl Carboxylate
Chemical Numbering System
CAS: 136-52-7
EINECS: 205-250-6
Molecular Formula & Molecular Weight
Molecular Formula: C16H30CoO4；C8H16O2.1/2Co
Molecular Weight: 345.34
Structure
Properties
Appearance (1), purple solid; (2), blue to blue-violet liquid.
Solubility insoluble in water. soluble in ethyl ether, benzene.
Stability stable.
Risk Solid (or 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 emulsifying, dispersing, lubricating, antibacterial, preservative, solubilizing abilities.
Synthesis
Sodium 2-ethylhexanoate reacts with cobalt sulfate, then obtain.
Quality Standards & Test Methods
1, Physical and chemical indexes
|
Item |
Physical and chemical indexes |
|
|
Solid |
Liquid |
|
|
Actives, %, ≥ |
95.0 |
50.0 - 80.0 |
|
Co, %, ≥ |
|
6.0 - 12.0 |
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), Co
2, Hazardous substances indexes
|
Item |
Hazardous substances indexes |
|
Solid (or Liquid) |
|
|
Heavy metals (as Pb, except Co), 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 emulsifying agent, dispersing agent.
2, Coatings
Drier in paint. Alternative to cobalt naphthenate.
Suitable for air drying paint.
However, cobalt bis(2-ethylhexanoate) is easy to wrinkle the surface of paints, it is not suitable to use alone.
3, Polymer
Whitening agent, stabilizer in plastics, resins, paints.
catalytic curing agent in polyurethane reaction.
Manufacturers
Update: 20131102(1); 20180316(2);