Chelating Agents
REACH
Mono(2-ethylhexyl) phosphate
CAS Number
1070-03-7
EC Number
213-972-7
What is Mono(2-ethylhexyl) phosphate?
Mono(2-ethylhexyl) phosphate (CAS 1070-03-7), also known as ethylhexyl acid phosphate, is an organophosphate ester used as a chelating agent and corrosion inhibitor.
Where is Mono(2-ethylhexyl) phosphate used?
- Solvent extraction and hydrometallurgy: metal extractant for separating and recovering rare earth elements and cobalt from leach solutions
- Lubricants and metalworking fluids: anti-wear and extreme-pressure additive that forms protective phosphate films on metal surfaces under high-load conditions
- Textile processing: fiber lubricant and antistatic agent improving yarn runnability during spinning and weaving
- Leather and paper manufacturing: processing aid to control metal ion activity
- Its acid phosphate structure enables selective metal ion coordination and surface-active behavior.
Commercial specifications
- Liquid, typically a mixture with the diester analog; mono-ester content specified by grade
- Purity and ester ratio confirmed by acid value and phosphorus content analysis
Other Names (Synonyms)
2-ETHYLHEXYL DIHYDROGEN PHOSPHATE|Ethylhexyl acid phosphate|Phosphoric acid, mono(2-ethylhexyl) ester|2-Ethylhexyl acid phosphate|(2-Ethylhexyl)orthophosphate|1-Hexanol, 2-ethyl-, dihydrogen phosphate|1-Hexanol, 2-ethyl-, phosphate
What are the physical properties of Mono(2-ethylhexyl) phosphate?
Boiling Point 321.8±25.0 °C(Predicted)
Density 1.127±0.06 g/cm3(Predicted)
Flash Point 130 °C
Form Liquid
Vapor Pressure 0Pa at 20℃
Log P 2.65 at 25℃ and pH4-9
How is Mono(2-ethylhexyl) phosphate classified and handled safely? Learn More
Hazard Statements
H314 (99.1%): Causes severe skin burns and eye damage [Danger Skin corrosion/irritation]
H318 (94.1%): Causes serious eye damage [Danger Serious eye damage/eye irritation]
Which trade and regulatory codes apply to Mono(2-ethylhexyl) phosphate?
Storage Class 10 - Combustible liquids
WGK (Germany) 3