01 / Bis(2,4,4-trimethylpentyl)phosphinic acid
it is used as extractant for cobalt/nickel separation.

02 / Bis(2,4,4-trimethylpentyl)dithiophosphinic acid
it is used as extractant for zinc and rare earth metals.

01 / Trioctylphosphine oxide (TOPO)
Can be used for solvent extraction processes, esp. of uranium from wet phosphoric acid.

02 / Sodium di-(isobutyl)dithiophosphinate
it is used as flotation agent in copper mining.

01 / Tributyl phosphine
It is used as ligand for making catalysts, but also as reducing agent, e.g. for desulfurization.

02 / Tetra-n-butylphosphonium bromide
It is used as thermally stable phase-transfer-catalyst (PTC), but also as catalyst for the production of special polymers.

03 / Tributyltetradecylphosphnium chloride (TTPC)
It is used as a biocide in industrial water cooling circuits to prevent fouling processes.

01 / Tetra-n-butylphosphonium bromide
As phase transfer catalyst in synthesis of fluorine contained aromatic compound.

02 / Polyphosphoric acid
It is used in synthesis of lithium hexafluorophosphate and used in plating processing for pH adjustment.