Di (2-ethylhexyl) Phosphoric Acid D2EHPA

Molecular Formula: (C₈H₁₇O) ₂PO₂H

Molecular Weight: 322.42 (International Atomic Weight Table, 1987)

CAS No.: 298-07-7

Product Description

Di(2-ethylhexyl) Phosphoric Acid (D2EHPA) is a colourless to yellowish transparent viscous oily liquid widely recognized as a highly efficient metal extraction reagent. It is soluble in alcohols and several organic solvents and has a freezing point of –60 °C.

Quality Index

Item Specification
Content, % ≥ 95.0
Monooctyl Ester, % ≤ 2.0
Chroma (Pt-Co) ≤ 100
Phase Separation Speed (s) ≤ 100
Acid Value (mg KOH/g) 159 – 189
Density (20 °C) g/ml 0.9736 – 0.9756
Viscosity µ 20 CPS 42 ± 3
Flash Point (Open Cup) °C ≥ 160
Refractive Index (N²⁰D) 1.4434 – 1.4444

Applications

D2EHPA is widely used as an extracting agent for non-ferrous and rare earth metals such as zinc, cobalt, nickel, and uranium.
It also finds applications in:

  • Pharmaceutical industry – as a purification and separation reagent.
  • Dyestuff industry – for intermediate processing.
  • Petrochemical industry – as a wastewater treatment agent.
  • Surfactant manufacturing – as a key raw material.

Packaging

Available in 200 kg HDPE/plastic barrels, ensuring safe storage and transportation.

Storage & Handling

  • Handle with care; avoid strong impacts or direct sunlight.
  • Store in a cool, dry, and well-ventilated area, away from fire and rain.
  • Keep containers tightly sealed to prevent contamination.

Industrial Significance

D2EHPA is a highly versatile organophosphorus extractant used across industries for its excellent selectivity, stability, and performance in metal recovery and chemical synthesis applications.

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