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239267

Sigma-Aldrich

Cobalt(II) nitrate hexahydrate

ACS reagent, ≥98%

Synonym(s):

Cobaltous nitrate, Cobaltous nitrate hexahydrate, Nitric acid, cobalt(II) salt

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500 G
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5 G
CN¥370.36
100 G
CN¥1,128.72
500 G
CN¥2,869.02

About This Item

Linear Formula:
Co(NO3)2 · 6H2O
CAS Number:
10026-22-9
Molecular Weight:
291.03
MDL number:
MFCD00149647
UNSPSC Code:
12352302
PubChem Substance ID:
329752523
NACRES:
NA.21
grade:
ACS reagent
form:
chips
powder, crystals or chunks
solid

CN¥370.36

Estimated to ship onApril 07, 2025Details

Request a Bulk Order

grade

ACS reagent

Quality Level

200

Assay

≥98%
98.0-102.0%

form

chips
powder, crystals or chunks
solid

reaction suitability

reagent type: catalyst
core: cobalt

impurities

≤0.01% insolubles

pH

4 (20 °C, 100 g/L)

mp

55 °C (lit.)

anion traces

chloride (Cl-): ≤0.002%
sulfate (SO42-): ≤0.005%

cation traces

Ca: ≤0.005%
Cu: ≤0.002%
Fe: ≤0.001%
K: ≤0.01%
Mg: ≤0.005%
NH4+: ≤0.2%
Na: ≤0.05%
Ni: ≤0.15%
Pb: ≤0.002%
Zn: ≤0.01%

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This Item
93571923037560832
Cobalt(II) nitrate hexahydrate ACS reagent, ≥98%

239267

Cobalt(II) nitrate hexahydrate

Cobalt(II) nitrate hexahydrate ≥99.9% trace metals basis

935719

Cobalt(II) nitrate hexahydrate

Cobalt(II) nitrate hexahydrate reagent grade, 98%

230375

Cobalt(II) nitrate hexahydrate

Cobalt(II) nitrate hexahydrate puriss. p.a., ACS reagent, Ni ≤0.001%, ≥99.0% (KT)

60832

Cobalt(II) nitrate hexahydrate

assay

≥98%, 98.0-102.0%

assay

≥99.9% trace metals basis

assay

98%

assay

≥99.0% (KT)

Quality Level

200

Quality Level

200

Quality Level

100

Quality Level

-

grade

ACS reagent

grade

-

grade

reagent grade

grade

ACS reagent, puriss. p.a.

anion traces

chloride (Cl-): ≤0.002%, sulfate (SO42-): ≤0.005%

anion traces

-

anion traces

-

anion traces

chloride (Cl-): ≤10 mg/kg, sulfate (SO42-): ≤50 mg/kg

impurities

≤0.01% insolubles

impurities

-

impurities

-

impurities

-

General description

Cobalt(II)nitrate hexahydrate is a red-brown crystalline structure that is soluble in water and organic solvents. It is commonly used in the preparation of cobalt-based catalysts, pigments, chemicals, and vitamin B12 preparations. Additionally, it serves high-purity cobalt source for use in the electronics industry. [1] [2]

Application

Cobalt(II)nitrate hexahydrate can be used as a catalyst to synthesize:
  • 5-Carboxanilide-dihydropyrimidinone derivatives by the condensation of acetoacetanilides, aldehydes, and urea/thiourea.
  • Nitro indoles by the nitration of indoles using tert-butyl nitrite as the nitro source.
  • Quinazolinones from 2-aminobenzonitriles using alcohols in the presence of phosphine ligand.

Signal Word

Danger

Hazard Classifications

Acute Tox. 4 Oral - Aquatic Acute 1 - Aquatic Chronic 1 - Carc. 1B Inhalation - Eye Dam. 1 - Muta. 2 - Ox. Sol. 2 - Repr. 1B - Resp. Sens. 1 - Skin Sens. 1 - STOT RE 2 Inhalation

Target Organs

Lungs

Storage Class Code

5.1B - Oxidizing hazardous materials

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Regulatory Information

危险化学品
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    MKCX1182
    MKCW6203
    MKCW6884
    MKCV4345

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    Preparation of a cobalt metal-organic framework (Co-MOF) and its application as a polypropylene flame retardant by compounding with melamine polyphosphate
    Ya Xu, et al.
    Polymer Testing, 116, 107765-107765 (2022)
    Chlorinated drinking water; chlorination byproducts; some other halogenated compounds; cobalt and cobalt compounds
    International Agency for Research on Cancer and others
    IARC Monographs on the Evaluation of Carcinogenic Risks to Humans / World Health Organization, International Agency for Research on Cancer, 52, 363-472 (1991)
    Thermal decomposition of cobalt nitrato compounds: Preparation of anhydrous cobalt (II) nitrate and its characterisation by Infrared and Raman spectra.
    Ehrhardt C, et al.
    Thermochimica Acta, 432(1), 36-40 (2005)
    Horacio López-Sandoval et al.
    Journal of inorganic biochemistry, 102(5-6), 1267-1276 (2008-02-29)
    In this work we present the synthesis, structural and spectroscopic characterisation of a series of cobalt(II) and zinc(II) coordination compounds with benzimidazole (bz) and its 2-benzimidazole derivatives: 2-aminobenzimidazole (2ab), albendazole (abz) and tris(2-benzimidazolylmethyl)amine (ntb). The compounds were evaluated for their
    Some Phosphine Oxide and Arsine Oxide Complexes of Cobalt (II) Nitrate.
    Cotton FA, et al.
    Inorganic Chemistry, 2(6), 1162-1165 (1963)
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