Cobalt hydroxide

Cobalt hydroxide (CAS 12672-51-4, EC 235-763-0) is an inorganic cobalt salt with the formula Co.HO. It carries no assigned E-code or common trade abbreviations. The compound is classified under Salts & Minerals and is subject to REACH registration requirements across the European market.

In coatings and polymer systems, cobalt hydroxide acts as a drying catalyst, accelerating oxidative crosslinking of alkyd resins to reduce cure times. In mining and hydrometallurgical processing, it serves as a pH-regulating agent, precipitating dissolved metals from process liquors by raising solution alkalinity at controlled rates.

Cobalt hydroxide is available in powder form and supplied under REACH-compliant documentation, including Safety Data Sheets aligned with EU CLP regulation. Procurement teams should confirm supplier registration status under REACH Annex XVII restrictions applicable to cobalt compounds. Packaging formats vary by supplier and order volume.