Cobaltous nitrate hexahydrate

Chemical properties

Red crystal, deliquescent in most air

The Uses of Cobaltous nitrate hexahydrate

Preparation of cobalt standard solutions.

The Uses of Cobaltous nitrate hexahydrate

manufacture of cobalt pigments and invisible inks; decorating stoneware and porcelain; preparation of catalysts; production of vitamin B12 supplements.

The Uses of Cobaltous nitrate hexahydrate

Cobaltous nitrate [Co(NO3)2·6H2O], also known as cobalt nitrate, is a red crystal that absorbs moisture. It is used in inks, pigments, animal feed, soil enhancers, and hair dyes.

What are the applications of Application

Cobalt(II) nitrate hexahydrate is a salt of Co(II) that acts as a source of Cobalt

Definition

ChEBI: A hydrate that is the hexahydrate form of cobalt dinitrate.

Preparation

The red hygroscopic hexahydrate Cu(NO3)2.6H2O crystallizes from aqueous solutions of cobalt bases in dilute nitric acid at room temperature. It becomes the trihydrate when heated at 56° ; at higher temperatures decomposition occurs.

General Description

Cobalt(II) nitrate hexahydrate (Co(NO₃)₂·6H₂O) is the hydrated cobalt salt. Its step-wise thermal degradation has been investigated. It affords anhydrous cobalt(II)nitrate as decomposition product.

Purification Methods

Crystallise the nitrate from water (1mL/g), or ethanol (1mL/g), by partial evaporation. After 3 crystallisations from H2O it contains: metal (ppm) As (8), Fe (1.2), K (1), Mg (4), Mn (4), Mo (4), Na (0.6), Ni (18), Zn (1.6). The hexahydrate gives the pink anhydrous salt by the action of HNO3 and N2O5. The hexahydrate melts at ~55o to give a red liquid which decomposes on further heating at 100-105o to form Co3O4.