Potassium 2-ethylhexanoate
Synonyms
2-Ethylcaproic acid, potassium salt;
2-Ethylhexanoic acid, potassium salt;
Potassium 2-ethylcaproate;
Hexanoic acid, 2-ethyl-, potassium salt;
Hexanoic acid, 2-ethyl-, potassium salt (1:1);
Category
Anionic Surfactant
> Carboxylate
>> Chain Carboxylate
>>> Alkyl Carboxylate
>>>> Branched Alkyl Carboxylate
Chemical Numbering System
CAS: 3164-85-0
EINECS: 221-625-7
Molecular Formula & Molecular Weight
Molecular Formula: C8H15KO2; C8H16O2.K
Molecular Weight: 182.30
Structure
Properties
Appearance (1), white to slightly yellow solid powder; (2), pale yellow viscous liquid.
Solubility soluble in water. soluble in ethyl ether. 10% aqueous solution: transparent or slightly milky.
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: 
Liquid form: irritation, 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, wetting, permeating, lubricating, antibacterial, preservative, cleansing, solubilizing abilities.
Synthesis
2-Ethylhexanoic acid reacts with potassium hydroxide or potassium carbonate, then obtain.
Quality Standards & Test Methods
1, Physical and chemical indexes
|
Item |
Physical and chemical indexes |
|
|
Solid |
Liquid |
|
|
Actives, %, ≥ |
97.0 |
50.0 - 80.0 |
|
pH (25°C, 1% solution) |
7.5 - 9.5 |
7.5 - 9.5 |
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), 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 (or 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 wetting agent.
Use as emulsifying agent, dispersing agent.
2, Coatings
Drier in paint. Alternative to potassium naphthenate.
3, Polymer
Catalyst in polyurethane foam reaction. Usually use with cobalt soaps together, can reduce using amount of cobalt soap.
Manufacturers
Update: 20131102(1); 20180316(2);