| Specifications |
| Chemical Name |
Sodium Salt of Salicylic Acid. |
| Technical Information |
White odourless crystals, scales or powder; becomes pinkish on long exposure to light. Aqueous solution slightly acidic, pH between 5-6. |
| Typical Analysis |
| Description |
Flakes - Colourless, Crystalline flakes.
Powder - White powder. |
| Odour |
Odourless or with a faint characteristic odour. |
| Reaction |
A 10% w/v solution in water is neutral or acid to litmus. |
| Acidity |
2.0g dissolved in 50 ml of CO2 free water requires not more than 0.2 ml of 0.1N NaOH solution to produce a red
colour.
(indicator-10 drops of phenol red) |
| Clarity & Colour of Solution |
Passes Test. |
| Organic Volatile Impurities |
Passes Test. |
| Arsenic |
2 ppm (max) |
| Heavy Metals |
20 ppm (max) |
| Chloride |
200 ppm (max) |
| Sulphate |
600 ppm (max) |
| Sulphite or Thiosulphate |
1g of Sodium Salicylate dissolved in 20 ml of water and acidified with 1 ml of conc.
HCl, the filtrate does not require more than 0.15 ml of 0.1N Iodine Solution. |
| Loss on drying |
0.5% (max) when dried at 105°C. |
| Assay |
99.0% to101% I.P/B.P.,
99.5% to 100.5% U.S.P of C7H5O3Na calculated with reference to substance dried at 105°C. |
