CASR |
: | 7647-14-5 |
Molecular Formula |
: | NaCl |
Molecular Weight |
: | 58.44 |
| Specifications | |
|---|---|
| Appearance/Description: | White crystalline powder or colourless crystals or white or almost white pearls |
| Solubility: | Freely soluble in water, and slightly more soluble in boiling water; practically insoluble in anhydrous ethanol |
| Identification (Chloride A): | A curdy white precipitate, insoluble in nitric acid but soluble in dilute ammonia should form |
| Identification (Chloride B): | A filter paper moistened with diphenylcarbazide solution should turn violet-red |
| Identification (Sodium A): | A dense white precipitate should form |
| Identification (Sodium B): | No precipitate should form |
| Appearance of solution: | Clear and colourless 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): | 100ppm max |
| Ferrocyanide[Fe(CN6)]: | No blue colour should produce within 10 minutes. |
| Iodide(I): | The mixture shows no blue colour within 5 min. |
| Nitrite (NO2): | The absorbance should not be greater than 0.01 at 354 nm |
| Phosphate (PO4): | NMT 25ppm |
| Sulphate (SO4): | NMT 200ppm |
| Arsenic (As): | NMT 1ppm |
| Barium(Ba): | Any opalescence in the solution should not more intense than that of reference solution after 2 hrs |
| Iron (Fe): | NMT 2ppm |
| Magnesium and alkaline earth metals: | NMT 100ppm (Calculated as Ca) |
| Calcium(Ca)&Magnesium(Mg): | NMT 50ppm (Calculated as Ca) |
| Loss on drying (105°C, 3 Hrs): | NMT 0.5% |
| Assay (Dried substance): | 99.0% - 100.50% |
| Heavy metal: | NMT 5ppm |
| Potassium (K): | NMT 500ppm |
| Total aerobic microbial count: | NMT 100 CFU/gm |
| Total Yeast and mold count: | NMT 10 CFU/gm |
| Escherichia coli: | should be Absent /gm |
| Pseud. aeruginosa: | should be Absent /gm |
| Staphylococcus aureus: | should be Absent /gm |
| Bile-tolerant gram negative bacteria: | should be Absent /gm |
| Clostridia: | should be Absent /gm |
| Salmonella: | should be Absent / 10gm |
| Bacterial endotoxin test: | NMT 5.0 IU/gm |
