Barium hydroxide octahydrate

Barium Hydroxide Octahydrate (CAS 12230-71-6, EC 602-490-7) is an inorganic alkali supplied as a white crystalline solid, also known commercially as Caustic Baryta or Barium Hydroxide 8-Hydrate. It carries no E-code designation and is classified under HS code 28164000.

In water treatment, it raises pH and precipitates heavy metal ions such as sulfates and carbonates from process streams. In polymer and plastics manufacturing, it functions as a catalyst in transesterification reactions and as a co-stabiliser contributing to flame retardancy in PVC formulations. Its strong alkalinity also supports leather deliming and textile scouring processes.

The material is available in technical and reagent grades as a crystalline powder, with compliance relevant to REACH registration requirements for EU supply. Packaging is typically offered in multi-wall paper sacks or fibre drums. Buyers should confirm grade specifications against application requirements, particularly where catalyst purity is critical.