Nickel(II) acetate tetrahydrate

Nickel(II) acetate tetrahydrate (CAS 6018-89-9, EC 611-946-4) is an inorganic nickel salt supplied as a green crystalline solid. It is also referenced under the trade names Nickel Diacetate Tetrahydrate and Diacetatonickel Tetrahydrate. No E-code designation applies to this substance.

In textile and leather processing, it serves as a fixative and pH buffer during dyeing operations, where the nickel ion coordinates with dye molecules to improve colour fastness. In catalysis, it acts as a precursor or co-catalyst in polymerisation and hydrogenation reactions, releasing active nickel species under process conditions. Personal care formulators use it at controlled concentrations for its antimicrobial and skin-conditioning properties.

This material is supplied in technical and reagent grades, with packaging typically available in 25 kg bags or drums. It falls under REACH regulation and requires an up-to-date Safety Data Sheet for EU procurement. Buyers should confirm grade specification against intended application requirements prior to ordering.