2-Ethylhexyl Dihydrogen Phosphate
Synonyms
2-Ethylhexyl dihydrogen phosphate;
Mono(2-ethylhexyl) phosphate;
Phosphoric acid, mono(2-ethylhexyl) ester;
Category
Anionic Surfactant
> Phosphate
>> Chain Phosphate
>>> Alkyl Phosphate
>>>> Branched Alkyl Phosphate
Chemical Numbering System
CASRN：1070-03-7
EINECS：213-967-0
Molecular Formula & Molecular Weight
Molecular Formula: C8H19O4P
Molecular Weight: 210.21
Structure
Properties
Appearance (1), colorless to pale yellow liquid.
Solubility slightly soluble in water; soluble in ethanol.
Stability stable. Under strong acid condition, easily hydrolyzed.
Risk Liquid form: irritation, irritation to skin, eye.
GHS (Rev.10) label: 
Animal Toxicity
Table 1 Animal toxicity values
|
rat oral LD50 |
3450mg/kg[1] |
|
rabbit skin LDLo |
2000mg/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, permeating abilities. Low to moderate foaming. Resistance to high concentration of alkali. Intolerance to hard water. Resistance to high temperature.
Synthesis
Obtained that 2-ethylhexyl alcohol reacts with polyphosphoric acid (or phosphorus pentoxide).
Quality Standards & Test Methods
1, Physical and chemical indexes
|
Item |
Physical and chemical indexes |
|
Liquid |
|
|
Actives, %, ≥ |
90.0 |
Test Methods
(1), Actives
GB/T 13173 Surface active agents - Detergents - Testing methods
2, Hazardous substances indexes
|
Item |
Hazardous substances indexes |
|
Liquid |
|
|
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.
Major Uses
1, Typical applications
Use as emulsifying agent, dispersing agent.
Use as wetting agent, permeating agent.
Use as anticorrosive agent, antirust 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, wetting agent in textile.
6, Polymer
Internal lubricant, antistatic agent in resins.
Manufacturers
References
[1]: ChemIDplus. 1070-03-7, 2-Ethylhexyl dihydrogen phosphate
Update: 20140330(1); 20190303(2);