Product Name

Calcium Chloride Dihydrate

C.A.S. No.

10035-04-8

Molecular Formula

CaCl₂.2H₂O

Molecular Weight

147.01 g/mol

SPECIFICATION

IP

BP

USP

Description

A White, Crystalline powder or fragments or granules, odorless, hygroscopic.

White or almost white, crystalline powder, hygroscopic.

White or almost white, crystalline powder, hygroscopic.

Solubility

-

Freely soluble in water and soluble in ethanol (96 %)

-

Appearance of solution

Clear and not more intensely colored than reference solution YS6.

10 % solution is clear and not more intensely colored than reference solution Y6.

-

Identification

1. Reaction Of Calcium

2. Reaction of Chlorides

3. Assay

1. Reactions of Calcium salts

2. Reactions of Chlorides

1. 10% solution gives reaction of chloride

2. It gives reaction of calcium

3. It complies with the limit test of assay

1. Reactions of Calcium salts

2. Reactions of Chlorides

Acidity or Alkalinity

To 10 ml of freshly prepared 10 % w/v solution add 2 drops off phenolphthalein solution. Titrate with 0.01 M hydrochloric acid or 0.01 M sodium hydroxide.

If the solution is red , than not more 0.2 ml of 0.01 M HCL need to discharge the color and if the solution is colorless, not more than 0.2 mlNaOH is required to turn it red.

-

pH

-

-

4.5 9.2

Arsenic

NMT 3 ppm.

-

-

Barium

After not less than 15 min. the solution is not more opalescent than a mixture of 10 ml of solution and 1 ml of distilled water.

After 15 min, Any opalescent in the solution is not more intense than that in a mixture of 1 ml of distilled water and 1.0 gm of sample.

-

Aluminum&Phosphate (IP)

No turbidity or precipitate is produced.

No turbidity or precipitate is formed.

NMT 1 ppm

Iron , Aluminum & Phosphate

-

-

No turbidity or precipitate is formed.

Heavy metals

NMT10 ppm

-

NMT10 ppm

Iron

NMT 20 ppm.

NMT10 ppm

-

Magnesium and Alkali salts

NMT 1.0 %

NMT0.5%

NMT 1.0 %

Sulphate

NMT 300 ppm

NMT 300ppm

-

Organic Volatile impurities

-

-

Meets the requirements

Assay

97.0 % to 103.0 %

97.0% - 103.0%

99.0% 107.0%