Calcium Chloride Dihydrate
Many biological functions rely on calcium. In a solution, calcium ions can be obtained from calcium chloride. The calcium source can be used in combination with chlorides. Calcium chloride dihydrate appears as a white crystalline powder, highly soluble in water. The crystalline powder is highly demanded in several industrial sectors, given to its use as an ingredient. It works differently in every industrial sector. This chemical compound is also incompatible with certain solutions, such as zinc. It is best to store this white deliquescent compound at room temperature.
Specification | IP | BP/EP | USP |
Description | White crystalline powder or fragments or granules; odourless; hygroscopic | White or almost white, crystalline powder , hygroscopic | White hard odourless fragments or granules |
Identification | It gives reactions (a) of chlorides, it gives reactions (b) of Calcium salt | It gives reactions (a) of chlorides, (b)it gives reactions of Calcium (c) it complies with the limits of assay | It gives reactions (a) of chlorides, it gives reactions of Calcium |
Appearance of Solution (10%) | Clear and not more coloured then reference solution YS6 | Clear and not more coloured then reference solution Y6 | --- |
Solubility | Freely soluble in water, insoluble in absolute ethanol (95%) | Freely soluble in water, soluble in ethanol (96 %) | Freely soluble in water, in alcohol and in boiling water |
pH | --- | --- | 4.5 to 9.2 |
Aluminum | --- | Max 1 ppm | Max 1 ppm |
Acidity/Alkalinity | NMT 0.2 ml of 0.01 M NaOH or NMT 0.2 ml of 0.01 M HCl | NMT 0.2 ml of 0.01 M NaOH /HCl | --- |
Substances precipitated in Ammonia (Iron, Aluminium & Phosphate) | No Turbidity or precipitation | Max. 10 ppm (Iron) Max 1 ppm (Aluminium) | No Turbidity or Precipitate is produced |
Iron | Max 20 ppm | Max 10 ppm | --- |
Heavy Metals | Max. 10 ppm | Max 20 ppm (EP) | --- |
Magnesium & Alkali Salts | Max. 1.0 % | Max. 0.5% | Max. 1.0% |
Barium | Any opalescence in sample solution is not more intense than that in standard solution | Any opalescence in sample solution is not more intense than that in standard solution | --- |
Sulphate | Max 300 ppm | Max 300 ppm | --- |
Arsenic | Max. 3 ppm | --- | --- |
Assay | 97.0%-103.0% | 97.0%-103.0% | 99.0 % to 107.0 % |