Name: Solvay CYANEX 272
Brand: Guangzhou Eric Wei Chemical Co., Ltd.

Features Of Solvay CYANEX 272

Highly selective extraction of cobalt(II) over nickel(II) in acidic sulfate and chloride leach solutions.
Excellent chemical and thermal stability under aggressive hydrometallurgical conditions.
Low aqueous solubility and minimal third-phase formation, enabling robust phase separation.
Compatible with standard industrial diluents (e.g., kerosene, Shellsol® D series) and common modifiers.
Proven performance in continuous counter-current solvent extraction circuits at commercial scale.

Typical Applications Of Solvay CYANEX 272

Cobalt–nickel separation in laterite and mixed sulfide ore processing.
Purification of cobalt electrolyte prior to electrowinning in battery-grade metal production.
Recovery and refining of cobalt from spent lithium-ion battery black mass leachates.
Selective cobalt removal from zinc refinery purification streams.

Chemical Type	Bis(2,4,4-trimethylpentyl)phosphinic acid
Product Form	Liquid concentrate (typically supplied as 100% active or diluted in aromatic/aliphatic hydrocarbon)
Appearance	Clear, colorless to pale yellow liquid
Primary Applications	Hydrometallurgical solvent extraction of cobalt(II), especially from Ni/Co mixtures
Key Features	High Co/Ni selectivity, low acid co-extraction, good stripping characteristics with mild acid
Storage Stability	Stable for ≥24 months when stored sealed under inert atmosphere at ambient temperature
Handling Classification	Corrosive liquid (UN 3265, Class 8); requires appropriate PPE and ventilation

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