Cobalt(ii)iodide

Base Information

• Chemical Name: Cobalt(ii)iodide
• CAS No.: 15238-00-3
• Molecular Formula: CoI2
• Molecular Weight: 312.74
• Wikidata: Q421250
• Mol file: 15238-00-3.mol

Synonyms:Cobalt(ii)iodide;MFCD00016030;CoI2;cobaltdiiodide;Cobalt(II) iodide, anhydrous;Cobalt(II) iodide, ultra dry;Cobalt(II) iodide, 95%, powder;SY073177;CS-0111393;Q421250;Cobalt(II) iodide, anhydrous, min. 95% (99.5%-Co);Cobalt(II) iodide, anhydrous, powder, 99.999% trace metals basis

Chemical Property of Cobalt(ii)iodide

Chemical Property:

• Melting Point: >515 °C(lit.)
• Boiling Point: 570°C
• Flash Point: 570oC vac.
• PSA: 0.00000
• Density: 5.68
• LogP: 1.77140
• Sensitive.: Hygroscopic
• Solubility.: acetone: slightly soluble(lit.)
• Water Solubility.: Soluble in water.
• Hydrogen Bond Donor Count: 0
• Hydrogen Bond Acceptor Count: 0
• Rotatable Bond Count: 0
• Exact Mass: 312.74214
• Heavy Atom Count: 3
• Complexity: 2.8

Purity/Quality:

98%,99%, ^*data from raw suppliers

Cobalt(II) iodide, anhydrous, min. 95% (99.5%-Co) ^*data from reagent suppliers

Safty Information:

• Pictogram(s): Xn
• Hazard Codes: Xn
• Statements: 20/21/22-36/37/38
• Safety Statements: 26-36

MSDS Files:

SDS file from LookChem

Total 1 MSDS from other Authors

Useful:

• Canonical SMILES: [Co](I)I
• Description: Cobalt iodide appears as black crystals with a slight ‘iodine’-like odour. When heated to decomposition, it may emit toxic fumes of iodine and oxides of nitrogen. Anhydrous cobalt (II) iodide is sometimes used to test for the presence of water in various solvents. Cobalt (II) iodide is used as a catalyst, for example, in carbonylations. It catalyses the reaction of diketene with Grignard reagents, useful for the synthesis of terpenoids.
• Physical properties: Exists in two isomorphous forms, α- and ?-forms; both modifications highly hygroscopic. The α-form is black hexagonal crystal; density 5.58 g/cm3; turns dark green in air; melts at 560°C; disolves in water giving pink coloration. The α-forms sublimes in vacuo, partly forming an isomorous yellow modification-the anhydrous β-form. The β-modification is a yellow powder; density 5.45 g/cm3; converts to the α-form when heated to 400°C; absorbs moisture from air, the yellow powder becoming green droplets; dissolves readily in water forming a colorless solution which turns pink on heating. The hexahydrate is red hexagonal crystals; density 2.90 g/cm3; loses water at 130°C giving anhydrous iodide; soluble in water, ethanol, acetone, chloroform and ether, forming colored solutions, (while the aqueous solution is red below 20°C and green above this temperature; the salt forms blue solution in ethanol, chloroform and ether).
• Uses: Hygrometers; determination of water in organic solvents; catalyst. Cobalt(II) iodide is used as a moisture and humidity indicator. It is also used as a catalyst.