Cobaltous nitrate hexahydrate Chemical Properties

Melting point:

55 °C(lit.)

Density 

1.88

refractive index 

1.52

storage temp. 

Store at +5°C to +30°C.

solubility 

2170g/l

form 

Wet Crystalline Aggregates

color 

Red to pinkish-brown

Specific Gravity

1.87

PH

4.0 (100g/l, H2O, 20℃)

Water Solubility 

134 g/100 mL

Merck 

14,2444

Exposure limits

ACGIH: TWA 0.02 mg/m3

Stability:

Stable. Strong oxidizer - incompatible with reducing agents.

InChIKey

QGUAJWGNOXCYJF-UHFFFAOYSA-N

CAS DataBase Reference

10026-22-9(CAS DataBase Reference)

EPA Substance Registry System

Cobalt nitrate hexahydrate (10026-22-9)

Safety Information

Hazard Codes 

O,Xn,N,T

Risk Statements 

8-22-40-43-50/53-42/43-36/37/38-68-20-60-49

Safety Statements 

17-36/37-60-61-45-36/37/39-26-22-53

RIDADR 

UN 1477 5.1/PG 2

WGK Germany 

2

RTECS 

QU7355500

TSCA 

Yes

HazardClass 

5.1

PackingGroup 

III

HS Code 

28342920

Toxicity

LD50 orally in rats: 691 mg/kg (Speijers)

MSDS

• Language:English Provider:Cobaltous nitrate hexahydrate
• Language:English Provider:ACROS
• Language:English Provider:SigmaAldrich
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Cobaltous nitrate hexahydrate Usage And Synthesis

Description

Cobalt Nitrate is the cobalt salt form of nitrate, usually existing in the form of hexahydrate. It is used in manufacture of cobalt pigments and invisible inks; decorating stoneware and porcelain; preparation of catalysts; production of vitamin B12 supplements; a battery additive. It is commonly reduced, acting as the source of metallic high purity cobalt for use in the electronics and related industries. It can be absorbed on to various catalyst supports for use in Fischer-Tropsch catalysis. It also finds application in the synthesis of benzimidazole and benzothiazole compounds, which show significant and promising activities against various viruses such as HIV and HCMV-1.

Resources

https://www.alfa.com/en/catalog/036418/
https://en.wikipedia.org/wiki/Cobalt(II)_nitrate
Chandrachood, P. S., et al. Acta Chimica Slovenica 58.2(2011):367-371.
https://www.google.com/patents/US2595499

Chemical Properties

Red crystal, deliquescent in most air

Uses

Preparation of cobalt standard solutions.

Uses

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.

Uses

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

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.

Definition

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

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.

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