Hendecanoic Acid
Time: 2012-10-03 16:20:00
Hendecanoic Acid
Undecanoic acid;
n-Undecanoic acid;
n-Undecoic acid;
n-Undecylic acid;
FEMA No. 3245;
Anionic Surfactant
>> Carboxylate
>> Chain Carboxylate
>> Alkyl Carboxylate
>> Linear Alkyl Carboxylate
Chemical Numbering System
Molecular Formula & Molecular Weight
Molecular Formula: C11H22O2
Molecular Weight: 186.29
Appearance    (1), white solid.
Solubility    insoluble in water. soluble in toluene, ethyl ether.
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
mouse intravenous LD50
Ecology    may be hazardous to environment. Water body should be given special attention.
Biodegradability    biodegradable.
Characteristics    excellent cleansing, emulsifying, dispersing, solubilizing, foaming, lubricating abilities. Nonresistant to hard water.
Prepared by alkanes oxidation.
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 lubricant.
2. Household detergents
Use as cleansing agent.
3. Organic synthesis
Used in organic synthesis, for example, used in preparation of undecanoic acid esters.
4. Personal care products
Use as cleansing agent, emulsifying agent, masking agent, antiseborrheic agent.
5. Pets
Use as cleansing agent, emulsifying agent.
[1]: ChemIDplus. 112-37-8, Undecanoic acid
Update: 20131102(1); 20180210(2);