P204 zinc and other metals removal extraction reagent

CAS: 298-07-7, IUPAC name: Bis(2-ethylhexyl) hydrogen phosphate.
Normally it is used to remove impurities, then use DZ272 to extract cobalt and magnesium instead of P507, then get nickel from Laterite-Nickel Ore, the efficiency will be raised too much. This is the reason why we recover to produce this old product again.

Appearance: Colorless, transparent, viscous liquid

Density (25℃): 0.973 g/ml

Chemical formula: C16H35O4P

Viscosity (25℃): 3.47mPa·s

Flash point: 206°C

Ignition point: 233°C

Freezing point: -60°C

Boiling point: 209°C (1.33kPa)

Di-(2-ethylhexyl)phosphoric acid (DEHPA or HDEHP) normally be used to remove impurities, then use DZ272 to extract cobalt and magnesium instead of P507, then get nickel from Laterite-Nickel Ore, the efficiency will be raised more than 200 times.

EHPADEHPA is used in the solvent extraction of uranium salts from solutions containing the sulfate, chloride, or perchlorate anions. This extraction is known as the “Dapex procedure.” Reminiscent of the behaviors of carboxylic acids, DEHPA generally exists as a hydrogen-bonded dimer in the non-polar organic solvents.

For practical applications, the solvent, often called a diluent, is typically kerosene. A complex is formed from two equivalents of the conjugate base of DEHPA and one uranyl ion. Complexes of the formula (UO2)2[(O2P(OR)2]4 also form, and at high concentrations of uranium, polymeric complexes may form.

The extractability of Fe3+ is similar to that of uranium, so it must be reduced to Fe2+ before the extraction.