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Cobalt nitrate

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Cobalt nitrate Basic information

Product Name:
Cobalt nitrate
Synonyms:
  • cobalt(2+)nitrate
  • cobalt(ii)nitrate(1:2)
  • cobaltbis(nitrate)
  • cobaltdinitrate
  • cobaltnitrate(co(no3)2)
  • Nitricacid,cobalt(2+)salt
  • nitricacid,cobalt(2++)salt
  • PLATING SOLUTION CO-701
CAS:
10141-05-6
MF:
CoN2O6
MW:
182.94
EINECS:
233-402-1
Product Categories:
  • AAS CRMsMethod Specific
  • Extractable Heavy metalsCosmetics
  • AAS
  • AASSpectroscopy
  • Allergens
  • Application CRMs
  • Inorganics
  • Cationic Standard SolutionsAlphabetic
  • C
  • Chromatography
  • CO - CZ
  • Ion Chromatography Standards
  • Matrix Selection
  • MetalsSpectroscopy
  • Nitrate
  • Oeko-Tex Standard 100
  • Spectroscopy
Mol File:
10141-05-6.mol
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Cobalt nitrate Chemical Properties

Melting point:
decomposes at 100–105℃ [MER06]
Boiling point:
2900 °C(lit.)
Density 
1.03 g/mL at 25 °C
vapor pressure 
0Pa at 20℃
Flash point:
4°C (Toluene)
solubility 
H2O: soluble
form 
wire
color 
pale
Water Solubility 
g/100g solution H2O: 45.66 (0°), 50.5 ± 0.2 (25°C), 77.21 (91°C); solid phase, Co(NO3)2 ·6H2O (0°C, 25°C), Co(NO3)2 · 3H2O (91°C) [KRU93]
Merck 
13,2469
CAS DataBase Reference
10141-05-6(CAS DataBase Reference)
EPA Substance Registry System
Cobalt(II) nitrate (10141-05-6)
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Safety Information

Hazard Codes 
T,N,Xn,Xi
Risk Statements 
45-23/24/25-34-51/53-43-40-36/38-52/53-49-60-42/43
Safety Statements 
53-23-26-36/37/39-45-61-36/37-36
RIDADR 
UN 3264 8/PG 3
WGK Germany 
3
RTECS 
GF8750000
HazardClass 
5.1
PackingGroup 
II
HS Code 
28342910
Hazardous Substances Data
10141-05-6(Hazardous Substances Data)
Toxicity
LD in rabbits (mg/kg): 250 orally, 75 s.c. (Venugopal, Luckey)

MSDS

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Cobalt nitrate Usage And Synthesis

Uses

Cobalt nitrate is used in the decoration of porcelain and stones; in the manufacture of invisible inks and cobalt pigments; in hair dyes; in animal feeds; as an additive to soils; in catalysts preparation; and in vitamin supplements.

Chemical Properties

Red crystals. Deliquescent in moist air. Soluble in most organic solvents.

Physical properties

The hexahydrate is red monoclinic crystal; deliquescent in moist air; density 1.87 g/cm3; decomposes at 55°C, losing three molecules of water; decomposes to green cobalt(II) oxide on further heating at 74°C; very soluble in water (134 g/100mL at 0°C); also soluble in alcohols and acetone. The anhydrous salt is pale red powder; density 2.49 g/cm3; decomposes around 100°C; soluble in water.

Uses

Sympathetic inks, cobalt pigments, catalysts, additive to soils and animal feeds, vitamin preparations, hair dyes, porcelain decoration.

Uses

Cobalt(II) Dinitrate is mainly reduced to metallic high purity cobalt used for catalysis reactions.

Definition

ChEBI: A cobalt salt in which the cobalt metal is in the +2 oxidation state and the counter-anion is nitrate.

Preparation

Cobalt(II) nitrate is prepared by treating the metal, or its oxide, hydroxide or carbonate with dilute nitric acid. The solution on evaporation yields red crystals of hexahydrate:
Co + 2HNO3 → Co(NO3)2 + H2
Co(OH)2+ 2HNO3 → Co(NO3)2 + 2H2O
CoCO3+ 2HNO3→ Co(NO3)2 + CO2 + H2O.

General Description

Odorless red solid. Sinks and mixes with water.

Air & Water Reactions

Water soluble.

Reactivity Profile

Mixtures of metal/nonmetal nitrates with alkyl esters may explode, owing to the formation of alkyl nitrates; mixtures a nitrate with phosphorus, tin (II) chloride or other reducing agents may react explosively [Bretherick, 1979 p. 108-109].

Hazard

Oxidizing agent, dangerous fire risk in contact with organic materials.

Health Hazard

Inhalation causes shortness of breath and coughing; permanent disability may occur. Ingestion causes pain and vomiting. Contact with eyes or skin causes irritation.

Flammability and Explosibility

Not classified

Cobalt nitrateSupplier

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