CYANEX® 272 is a dialkyl phosphinic acid extractant widely used for the separation of cobalt from nickel to produce high purity cobalt salts and cobalt metal. Since the active component of CYANEX® 272 extractant is a phosphinic acid, metals are extracted through a cation exchange mechanism. Although CYANEX® 272 extractant is selective for cobalt in the presence of nickel, a variety of other cations can also be extracted depending on the solution pH. CYANEX® 272 extractant is totally miscible with common aromatic and aliphatic diluents, and is extremely stable to both heat and hydrolysis.

CYANEX® 272 extractant also enables the recovery of various metals, such as cobalt from spent lithium-ion batteries, including those powering electric vehicles, e-bikes, power tools, electronics and stationary storage stations.


  • Global Business Unit
    Technology Solutions
  • Brand


Segments Applications
Solvent Extraction Cobalt

Chemical categories

Chemical category Chemical family Chemical product
Mining Chemicals Reagents Proprietary

Region of commercial availability

  • Asia / Pacific
  • Europe / Middle East / Africa
  • North America
  • Latin America

Download documentation for CYANEX® 272