Parameter | Specifications |
Description | Soft, white powder, free from grittiness, odourless, tasteless. |
Solubility | Insoluble in water and in alcohol, soluble in solution of alkali hydroxides and dil. mineral acids. |
Identification | A) It gives yellow when strongly heated, the yellow color disappear on cooling.
B) A solution in dil. hydrochloric acid gives the reaction of zinc. |
Alkalinity | Shake 1 g with 10 ml of boiling water R and add 0.1 ml. of phenolphthalein solution R and filter if a red color is produced, NMT 0.3 ml of 0.1 M Hcl is required to discharge it |
Iron | NMT 200 ppm |
Carbonates & Substances insoluble in acids | No effervescences occurs and resulting and the resulting solution is clear and colorless. |
Arsenic | NMT 5 ppm |
Cadmium | NMT 10 ppm |
Lead | NMT 50 ppm |
Loss on ignition | NMT 1.0% |
Assay | NLT 99% & NMT 100.5% |
Shelf Life: 3 years.
Storage: Keep container tightly closed. Keep container in a cool, well-ventilated area. Do not store above 25°C (77°F)
Uses & Application Of Zinc Oxide B.P.: