Dicetyl Phosphate
Synonyms
1-Hexadecanol, hydrogen phosphate;
Phosphoric acid, dihexadecyl ester;
Bis(hexadecyl) phosphate;
Di-n-hexadecyl phosphate;
Dicetyl hydrogen phosphate;
Dicetylphosphoric acid;
Dihexadecyl hydrogen phosphate;
Dihexadecyl phosphate;
1-Hexadecanol, 1,1'-(hydrogen phosphate);
Category
Anionic Surfactant
> Phosphate
>> Chain Phosphate
>>> Alkyl Phosphate
>>>> Linear Alkyl Phosphate
Chemical Numbering System
CAS: 2197-63-9
EINECS: 218-594-7
Molecular Formula & Molecular Weight
Molecular Formula: C32H67O4P
Molecular Weight: 546.85
Structure
Properties
Appearance (1), white solid.
Solubility slightly soluble in water; soluble in ethanol.
Stability stable. Under strong acid condition, easily hydrolyzed.
Risk Solid form: irritation, irritation to skin, eye, respiratory system.
GHS label: 
Animal Toxicity
Table 1 Animal toxicity values
|
mouse intraperitoneal LD |
> 500mg/kg[1] |
Ecology may be hazardous to environment. Water body should be given special attention.
Biodegradability biodegradable.
Characteristics excellent emulsifying, dispersing, anticorrosive, antirust, lubricating, cleansing, solubilizing, antistatic, wetting abilities. Low foaming. Resistance to high concentration of alkali. Intolerance to hard water. Can be used as soap substitute.
Note (1), Can be used in children cleaning products.
Synthesis
Obtained that hexadecyl alcohol reacts with phosphorus trichloride.
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
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 emulsifying agent, dispersing agent.
Use as anticorrosive agent.
Use as cleansing agent.
2, Machinery
Lubricant, corrosion inhibitor, antirust agent in metalworking fluids.
3, Household detergents
Cleansing agent in household cleaning products.
4, Industrial cleaning agents
Cleansing agent, dispersing agent, antirust agent in industrial cleaning.
5, Textile
Antistatic agent, cleansing agent in textile.
6, Personal care products
Emulsifying agent in personal care products. Similar with natural phospholipids, good compatibility with skin.
7, Leather
Fat-liquoring agent in leather.
Manufacturers
References
[1]: ChemIDplus. 2197-63-9, Dicetyl phosphate
Update: 20140330(1); 20190303(2);