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Cobalt hydroxide

Cobalt hydroxide Suppliers list
Company Name: Mainchem Co., Ltd.
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Products Intro: Product Name:Cobalt hydroxide
CAS:21041-93-0
Company Name: J & K SCIENTIFIC LTD.  
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Products Intro: Product Name:Cobalt(II) hydroxide (97%-Co)
CAS:21041-93-0
Purity:(97%-Co) Package:250g;50g
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Products Intro: Product Name:Cobalt(II) hydroxide, 97%
CAS:21041-93-0
Package:50g Remarks:B22045
Company Name: Beijing dtftchem Technology Co., Ltd.  
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Products Intro: CAS:21041-93-0
Purity:99.00%
Company Name: Energy Chemical  
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Products Intro: Product Name:Cobalt hydroxide
CAS:21041-93-0
Purity:99.9%(Metalsbasis) Package:100g,2kg,500g
Cobalt hydroxide Basic information
Physical Properties Uses Preparation Reactions
Product Name:Cobalt hydroxide
Synonyms:cobaltoushydroxide;COBALT HYDROXIDE 61 % MIN;COBALT HYDROXID;COBALT(II) HYDROXIDE, TECH., 95%;Cobalt(II)hydroxide(97%-Co);Cobalt hydroxide;Cobalt(II) hydroxide technical grade, 95%;cobalt (Ⅱ) hydroxide
CAS:21041-93-0
MF:CoH2O2
MW:92.95
EINECS:244-166-4
Product Categories:Inorganics;Cobalt Salts;Metal and Ceramic Science;Salts;metal hydroxide
Mol File:21041-93-0.mol
Cobalt hydroxide Structure
Cobalt hydroxide Chemical Properties
Melting point °Cd ec.)
density 3.597 g/mL at 25 °C(lit.)
form Powder
color Pink to purple
Water Solubility Soluble in acids and ammonia. Very slightly soluble in water. Insoluble in dilute alkalis.
Sensitive Air Sensitive
Merck 14,2442
Stability:Stability
CAS DataBase Reference21041-93-0(CAS DataBase Reference)
EPA Substance Registry SystemCobalt hydroxide (Co(OH)2)(21041-93-0)
Safety Information
Hazard Codes Xn,N
Risk Statements 20/21/22-36/37/38-50/53-42/43-40-20/22
Safety Statements 26-37/39-36
RIDADR UN 3077 9 / PGIII
WGK Germany 3
RTECS GG0904500
TSCA Yes
MSDS Information
ProviderLanguage
Cobalt hydroxide English
SigmaAldrich English
ALFA English
Cobalt hydroxide Usage And Synthesis
Physical PropertiesTwo forms occur, a rose-red powder (more stable) and a bluish-green powder less stable than the red form; rhombohedral crystals; density 3.597 g/cm3; decomposes on heating; practically insoluble in water 3.2 mg/L; Ksp 1.0x10–15; soluble in acids and ammonia; insoluble in dilute alkalis.
UsesCobalt(II) hydroxide is used as a drier for paints and varnishes and is added to lithographic printing inks to enhance their drying properties. Other applications are in the preparation of cobalt salts; as a catalyst; and in storage battery electrodes.
PreparationCobalt(II) hydroxide is obtained as a precipitate when an alkaline hydroxide is added to an aqueous solution of cobalt(II) salt:
CoCl2 + 2NaOH → Co(OH)2 + 2NaCl
Co(NO3)2 + 2NaOH → Co(OH)2 + 2NaNO3
ReactionsThermal decomposition to cobaltous oxide, CoO, occurs at 168°C in a vacuum.
Cobalt(II) hydroxide is oxidized by air and other oxidizing agents, forming cobalt(III) hydroxide, Co(OH)3. Reactions with mineral acids produce corresponding Co2+ salts.
Chemical PropertiesRose-red powder.Soluble in acids and ammonium salt solutions; insoluble in water and alkalies.
UsesCobalt salts, paint and varnish driers, catalyst, storage-battery electrodes.
Cobalt hydroxide Preparation Products And Raw materials
Raw materialsCobalt chloride
Preparation ProductsCOBALT (II) SULFAMATE
Tag:Cobalt hydroxide(21041-93-0) Related Product Information
COBALT (II) HEXAFLUORO-2,4-PENTANEDIONATE SALCOMINE COBALT(III) ACETYLACETONATE cobalt diformate COBALT POTASSIUM OXALATE COBALT(II) OXALATE COBALT CYCLOHEXANEBUTYRATE COBALT(II) ACETYLACETONATE Cobalt hydroxide 60CO Cobalt oxide Cobalt Calcium hydroxide Sodium hydroxide Aluminum hydroxide Cobalt chloride Hydroxide Ammonium hydroxide