Sodium Octanoate
Synonyms
Sodium caprylate;
Octanoic acid, sodium salt;
Sodium n-octanoate;
Sodium octanoate;
Caprylic acid, sodium salt;
Category
Anionic Surfactant
> Carboxylate
>> Chain Carboxylate
>>> Alkyl Carboxylate
>>>> Linear Alkyl Carboxylate
Chemical Numbering System
CAS: 1984-06-1
EINECS: 217-850-5
Molecular Formula & Molecular Weight
Molecular Formula: C8H15NaO2; C8H16O2.Na
Molecular Weight: 166.19
Structure
Properties
Appearance (1), white solid.
Solubility soluble in water. soluble in ethanol.
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, solubilizing, lubricating, antimicrobial, antibacterial, preservative, wetting, permeating abilities. Nonresistant to hard water.
Synthesis
Octanoic acid reacts with sodium hydroxide, then obtain.
Quality Standards & Test Methods
1, Physical and chemical indexes
|
Item |
Physical and chemical indexes |
|
Solid |
|
|
Actives, %, ≥ |
99.0 |
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, 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, Product standards
(1), Chinese standards
(1a), Chinese Pharmacopoeia (2015 Edition) Sodium caprylate
4, 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.
Major Uses
1, Typical applications
Use as cleansing agent.
Use as emulsifying agent, dispersing agent.
Use as preservative.
Use as wetting agent.
2, Household detergents
Use as cleansing agent.
3, Organic synthesis
Used in preparation of high purity n-heptane.
4, Personal care products
Use as emulsifying agent.
5, Pets
Use as cleansing agent, emulsifying agent.
6, Medicine
Pharmaceutical excipients. Use as stabilizing agent, bacteriostatic agent. (This section is for reference only, should be implemented according to local Pharmacopoeia.)
Manufacturers
Update: 20131102(1); 20180220(2);