Adipic acid
Synonyms
Hexanedioic acid;
1,4-Butanedicarboxylic acid;
1,6-Hexanedioic acid;
Category
Anionic Surfactant
> Carboxylate
>> Dicarboxylate
>>> Alkyl Dicarboxylate
>>>> Linear Alkyl Dicarboxylate
Chemical Numbering System
CAS: 124-04-9
EINECS: 204-673-3
Molecular Formula & Molecular Weight
Molecular Formula: C6H10O4
Molecular Weight: 146.14
Structure
Properties
Appearance (1), white solid.
Solubility soluble in water.
Physical - chemical properties
|
Water solubility, g/L |
30 (30°C)[1] |
|
Melting point, °C |
151.5[1] |
Stability stable.
Risk Solid form: corrosion; 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: 
Animal Toxicity
Table 1 Animal toxicity values
|
rat oral LD50 |
> 11000mg/kg[1] |
|
rat intraperitoneal LD50 |
275mg/kg[1] |
|
mouse oral LD50 |
1900mg/kg[1] |
|
mouse intravenous LD50 |
680mg/kg[1] |
|
rabbit oral LD50 |
> 11000mg/kg[1] |
Ecology may be hazardous to environment. Water body should be given special attention.
Biodegradability biodegradable.
Characteristics excellent cleansing, dispersing abilities.
Synthesis
Cyclohexanol or mixture of cyclohexanol and cyclohexanone reacts with nitric acid, then obtain.
Quality Standards & Test Methods
1, Physical and chemical indexes
|
Item |
Physical and chemical indexes |
|
Solid |
|
|
Actives, %, ≥ |
95.0 |
Test Methods
(1), Actives
GB 1886.53 Food safety national standard -- Food additive -- Adipic acid
GB 2092 Sebacic acid for industrial use
GB/T 13173 Surface active agents -- Detergents -- Testing methods
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), GB 1886.53 Food safety national standard -- Food additive -- Adipic acid
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 hydrotrope.
2, Organic synthesis
Widely used in nylon synthesis, such as nylon 6, nylon 66 and so on.
Widely used in manufacturing of adipic acid esters. Adipic acid esters can be used in ester-based lubricating oil, plasticizers, personal care products, etc.
3, Household detergents
Use as cleansing agent.
4, Personal care products
Use as buffering agent, masking agent.
5, Perfume
Fixative agent in perfume.
6, Pets
Use as buffering agent.
7, Industrial cleaning
Use as cleansing agent.
8, Electronics
Used in preparation of capacitor.
9, Environmental protection
Use as desulfurization additive.
10, Food
Use as food additive (acidity regulator).
Manufacturers
References
[1]: HSDB. 124-04-9, Adipic acid
[2]: ChemIDplus. 124-04-9, Adipic acid
Update: 20140203(1); 20180202(2);