CASR |
: | 7647-14-5 |
Molecular Formula |
: | NaCl |
Molecular Weight |
: | 58.44 |
| Specifications | |
|---|---|
| Appearance/Description: | Colorless, cubic crystals or white crystals or crystalline powder. Has a saline taste. |
| Solubility: | Freely soluble in water; and slightly more soluble in boiling water; soluble in glycerin; slightly soluble in alcohol. Practically insoluble in anhydrous ethanol. |
| Identification(Sodium): | Dense white precipitate should form. |
| Identification (Chloride): | A white curdled precipitate should form which insoluble in nitric acid but soluble in slight excess of 6N ammonia hydroxide |
| Appearance of Solution: | Clear and colorless solution |
| Assay (Dried basis): | 99.0% -100.5% of NaCl |
| Arsenic (As): | 1 ppm max |
| Barium(Ba): | Any opalescence in the test solution should not more intense than that in the reference solution |
| Ferrocyanide[Fe(CN6)]: | No blue color should develop in 10 min. |
| Iodide(I): | No blue color should observe in the mixture |
| Iron (Fe): | 2ppm max |
| Bromide (Br): | 100ppm max |
| Phosphate (PO4): | 25ppm max |
| Magnesium and alkaline earth metals: | NMT 100 ppm, calculated as Ca |
| Nitrite (NO2): | Absorbance should not be more than 0.01 at 354 nm |
| Sulphate (SO4): | 200ppm max |
| Acidity & alkalinity: | NMT 0.5ml of 0.01N hydrochloric acid or 0.01N sodium hydroxide should require to change the color of this solution. |
| Loss on drying,105°C: | NMT 0.5% |
