CASR |
: | 7647-14-5 |
Molecular Formula |
: | NaCl |
Molecular Weight |
: | 58.44 |
Specifications | |
---|---|
Appearance: | White or almost white, crystalline powder or colourless crystals or white or almost white pearls. |
Solubility: | Freely soluble in water, practically insoluble in anhydrous ethanol. |
Identification A (Chloride): | A white curdled precipitate should form which should dissolve in ammonia |
Identification B (Sodium): | A dense white precipitate should form |
Appearance of Solution: | Clear and colorless solution |
Acidity & alkalinity: | Not more than 0.5ml of 0.01M hydrochloric acid or 0.01M sodium hydroxide should require to change the colour of the indicator. |
Bromide (Br): | Maximum 100 ppm |
Ferrocyanide[Fe(CN6)]: | No blue colour should produce within 10 minutes. |
Iodide(I): | The mixture shows no blue colour. |
Nitrite (NO2): | The absorbance should not be greater than 0.01 at 354 nm |
Phosphate (PO4): | Maximum 25ppm |
Sulfate (SO4): | Maximum 200ppm |
Arsenic (As): | Maximum 1ppm |
Barium(Ba): | Any opalescence in the solution should not more intense than that of reference solution. |
Iron (Fe): | Maximum 2 ppm |
Magnesium and alkaline earth metals: | Maximum 100 ppm |
Loss on drying (105°C for 2hrs.): | Maximum 0.5% |
Assay (Dried substance): | 99.0% - 100.5% |