Decanoic Acid
Time: 2012-10-03 16:12:06
Decanoic Acid
n-Decanoic acid;
Capric acid;
1-Nonanecarboxylic acid;
Anionic Surfactant
>> Carboxylate
>> Chain Carboxylate
>> Alkyl Carboxylate
>> Linear Alkyl Carboxylate
Chemical Numbering System
Molecular Formula & Molecular Weight
Molecular Formula: C10H20O2
Molecular Weight: 172.26
Appearance    (1), white crystal.
Solubility    insoluble in water. soluble in ethanol, benzene.
Physical - chemical properties
Water solubility, mg/L
61.8 (25°C)[1]
Melting point, °C
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 (Rev.7) label:  
Animal Toxicity
Table 1 Animal toxicity values
rat oral LD50
mouse intravenous LD50
Ecology    may be hazardous to environment. Water body should be given special attention.
Biodegradability    biodegradable.
Characteristics    excellent cleansing, emulsifying, dispersing, wetting, permeating, solubilizing, foaming abilities. Nonresistant to hard water.
(1), The crude fatty acids are obtained by saponifying hydrolysis reaction of fats (for example: coconut oil).
(2), Crude fatty acids are washed, distilled and decolored, then obtain finished product.
Quality Standards & Test Methods
1. Physical and chemical indexes
Physical and chemical indexes
Actives, %, ≥
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
Hazardous substances indexes
Heavy metals (as Pb), mg/Kg, ≤
As, mg/Kg, ≤
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.
(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 wetting agent.
2. Household detergents
Use as cleansing agent.
3. Personal care products
Cleansing agent, emulsifying agent, masking agent, perfume in personal care products.
4. Food
Food additive (perfume, FEMA No. 2364) in food industry.
5. Organic synthesis
Widely used in preparation of capric acid esters. Capric acid esters can be used in personal care products, food, perfume, etc.
Widely used in preparation of capric acid salts. Capric acid salts can be used in personal care products, household cleaning products, fabricated metal products, plastic products, etc.
6. Pets
Use as cleansing agent, emulsifying agent.
[1]: HSDB. 334-48-5, Decanoic acid
[2]: ChemIDplus. 334-48-5, Decanoic acid
Update: 20131102(1); 20180106(2);