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Cobalt(II) Iodide, also known as Cobalt Iodide, is a chemical compound with the formula CoI2. It exists in two isomorphous forms, αand β-forms, both of which are highly hygroscopic. The α-form is a black hexagonal crystal with a slight 'iodine'-like odor, while the β-form is a yellow powder. Cobalt(II) Iodide is known for its ability to change color when exposed to moisture, making it a useful indicator for moisture and humidity levels. It also has applications as a catalyst in various chemical reactions.

15238-00-3

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15238-00-3 Usage

Uses

1. Used in Hygrometers:
Cobalt(II) Iodide is used as a moisture and humidity indicator in hygrometers. Its color change properties make it an effective tool for measuring the presence of water in the air.
2. Used in Determination of Water in Organic Solvents:
Anhydrous Cobalt(II) Iodide is sometimes used to test for the presence of water in various solvents, providing a visual indication of water content.
3. Used as a Catalyst:
Cobalt(II) Iodide is used as a catalyst in chemical reactions, such as carbonylations. It also catalyzes the reaction of diketene with Grignard reagents, which is useful for the synthesis of terpenoids.
4. Used in Different Industries:
a. Chemical Industry:
COBALT(II) IODIDE is used as a catalyst for carbonylations and the synthesis of terpenoids, facilitating important chemical reactions in the production of various compounds.
b. Analytical Industry:
COBALT(II) IODIDE is used as a moisture and humidity indicator, helping to determine the water content in organic solvents and providing valuable information for quality control and research purposes.
Physical and Chemical Properties:
Cobalt(II) Iodide is a brownish-red crystalline powder that is highly hygroscopic. The α-form is a black hexagonal crystal with a density of 5.58 g/cm3, while the β-form is a yellow powder with a density of 5.45 g/cm3. The hexahydrate form is red hexagonal crystals with a density of 2.90 g/cm3. Cobalt(II) Iodide is soluble in water, ethanol, acetone, chloroform, and ether, forming colored solutions. The aqueous solution turns red below 20°C and green above this temperature, while the salt forms a blue solution in ethanol, chloroform, and ether. When heated to decomposition, it may emit toxic fumes of iodine and oxides of nitrogen.

Preparation

Cobalt(II) iodide is prepared by heating cobalt powder in a stream of hydrogen iodide at 400 to 450°C: Co + 2HI → CoI2 + H2 The product obtained is the black crystalline α-form. Cobalt(II) iodide also may be made by heating cobalt powder with iodine vapor.

Check Digit Verification of cas no

The CAS Registry Mumber 15238-00-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,5,2,3 and 8 respectively; the second part has 2 digits, 0 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 15238-00:
(7*1)+(6*5)+(5*2)+(4*3)+(3*8)+(2*0)+(1*0)=83
83 % 10 = 3
So 15238-00-3 is a valid CAS Registry Number.
InChI:InChI=1/Co.2HI/h;2*1H/q+2;;/p-2

15238-00-3 Well-known Company Product Price

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  • (Code)Product description
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  • Detail

  • Alfa Aesar

  • (35730)  Cobalt(II) iodide, ultra dry, 99.999% (metals basis)   

  • 15238-00-3

  • 1g

  • 1264.0CNY

  • Detail

  • Alfa Aesar

  • (35730)  Cobalt(II) iodide, ultra dry, 99.999% (metals basis)   

  • 15238-00-3

  • 5g

  • 5819.0CNY

  • Detail

  • Alfa Aesar

  • (35730)  Cobalt(II) iodide, ultra dry, 99.999% (metals basis)   

  • 15238-00-3

  • 25g

  • 7982.0CNY

  • Detail

  • Alfa Aesar

  • (23119)  Cobalt(II) iodide, anhydrous, 99.5% (metals basis)   

  • 15238-00-3

  • 25g

  • 1320.0CNY

  • Detail

  • Alfa Aesar

  • (23119)  Cobalt(II) iodide, anhydrous, 99.5% (metals basis)   

  • 15238-00-3

  • 100g

  • 4766.0CNY

  • Detail

  • Alfa Aesar

  • (47185)  Cobalt(II) iodide, ultra dry, 99.999% (metals basis)   

  • 15238-00-3

  • 1g

  • 840.0CNY

  • Detail

  • Aldrich

  • (499129)  Cobalt(II)iodide  anhydrous, powder, 99.999%

  • 15238-00-3

  • 499129-1G

  • 1,437.93CNY

  • Detail

15238-00-3SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 12, 2017

Revision Date: Aug 12, 2017

1.Identification

1.1 GHS Product identifier

Product name COBALT(II) IODIDE

1.2 Other means of identification

Product number -
Other names -

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:15238-00-3 SDS

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15238-00-3Related news

Synthesis and structure of cobalt(II) iodide bearing a bulky N-heterocyclic carbene ligand, and catalytic activation of bromoalkanes08/01/2019

A divalent cobalt iodine complex bearing 1,3-bis(mesityl)imidazol-2-ylidene and pyridine ligands was synthesized and its structure was determined. The cobalt center has a typical d7-tetrahedral geometry, as expected. Catalytic application of this cobalt complex with bromoalkanes and Grignard rea...detailed

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