Didecyl dimethyl ammonium chloride
Synonyms
1-Decanaminium, N-decyl-N,N-dimethyl-, chloride;
N-Decyl-N,N-dimethyl-1-decanaminium chloride;
Didecyldimethylammonium chloride;
Ammonium, didecyldimethyl-, chloride;
Quaternium-12;
DDAC;
Didecyldimonium Chloride;
Category
Cationic surfactant
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>>>> Di-(Long-chain Linear Alkyl) Quaternary Ammonium Salt
Chemical Numbering System
CAS: 7173-51-5
EINECS: 230-525-2
Molecular Formula & Molecular Weight
Molecular Formula: C22H48ClN; C22H48N.Cl
Molecular Weight: 362.08
Structure
Properties
Appearance (1), white to pale yellow paste; or colorless to pale yellow liquid; or solid.
Solubility slightly soluble in water. Soluble in ethanol, benzene.
Hygroscopicity hygroscopic.
Stability stable. Decomposition by high heat.
Risk Solid form: flammable material; irritation, strong irritation to skin, eye, respiratory system. Harmful products of combustion are CO, CO2, nitrogen oxides and so on. Contact with strong oxidants, can cause to burn.
GHS label: 
Animal Toxicity
Table 1 Animal toxicity values
|
rat oral LD50 |
84mg/kg[1] |
|
rat intraperitoneal LD50 |
45mg/kg[1] |
|
mouse oral LD50 |
268mg/kg[1] |
|
mouse intraperitoneal LD50 |
11mg/kg[1] |
|
guinea pig intraperitoneal LDLo |
7mg/kg[1] |
Ecology may be hazardous to environment. Water body should be given special attention.
Biodegradability biodegradable.
Characteristics excellent antistatic, antibacterial, antimicrobial, preservative, solubilizing, emulsifying, dispersing, anticorrosive abilities. Resistance to acid, light, hard water.
Notes (1), Commercial liquid product, adding inert ingredients, general, is soluble in water.
Synthesis
Obtained that decyl chloride reacts with decyl dimethylamine.
Quality Standards & Test Methods
1, Physical and chemical indexes
|
Item |
Physical and chemical indexes |
|
Solid |
|
|
Actives, %, ≥ |
90.0 |
Test Methods
(1), Actives
GB/T 13173 Surface active agents -- Detergents -- Testing methods
GB/T 5174 Surface active agents -- Detergents -- Determination of cationic-active matter content
ISO 2871-1 Surface active agents -- Detergents -- Determination of cationic-active matter content -- Part 1: High-molecular-mass cationic-active matter
ISO 2871-2 Surface active agents -- Detergents -- Determination of cationic-active matter content -- Part 2: Cationic-active matter of low molecular mass (between 200 and 500)
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, 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, according to local regulations and standards.
Major Uses
1, Typical applications
Use as disinfectant, antimicrobial agent, preservative.
Use as antistatic agent.
Use as emulsifying agent, dispersing agent.
Use as flocculant.
Use as deodorant.
2, Petroleum
Use as emulsifying agent, for example, used in emulsification of asphalt.
3, Textile, fiber, leather
Leveling agent in cationic dyes.
Antistatic agent, softening agent in textile, fiber, leather.
4, Organic synthesis
Use as phase transfer catalyst.
5, Polymer
Use as emulsifying agent, for example, used in emulsification of rubber.
6, Water treatment
Bactericide-algicide, slime stripping agent in water treatment.
7, Forestry
Antimicrobial agent, preservative in wood processing.
8, Agriculture
Emulsifying agent, dispersing agent, antimicrobial agent in pesticides.
9, Personal care products
Conditioning agent, antistatic agent, emulsifying agent in personal care products.
Manufacturers
References
[1]: ChemIDplus. 7173-51-5, Didecyl dimethyl ammonium chloride
Update: 20140409(1); 20190428(2);