| Item |
Specification |
| Characteristics |
This product is colorless or white crystalline particles or powder; This product is easily soluble in water and almost insoluble in ethanol |
| Identification |
A solution (1 in 20) responds to the tests for Sodium and for Sulfate |
| Acidity or Alkalinity |
Not more than 0.50mL of either 0.010N hydrochloric acid or 0.010N sodium hydroxide is required to changed the color of the solution. |
| Chloride |
Not more than 0.02% |
| Loss on drying |
Not more than 0.5% |
| Assay |
99.0% - 101.0% |
sodium sulfate, anhydrous ( natrii sulfas anhydricus)
Molecular formula:Na2SO4
molecular weight:142.0
CAS NO.: 7757-82-6
Chemical Structure:
Appearance and characteristics: monoclinic crystal system, short columnar crystals, dense block like or shell like aggregates, colorless and transparent, sometimes with light yellow or green color, easily soluble in water. White, odorless, bitter crystal or powder with hygroscopicity. The appearance is colorless, transparent, large crystals or granular small crystals.
Sodium sulfate is anhydrous. It contains not less than 99.0 percent of Na2SO4, calculated on the dried basis.
packing and storage: Preserve in tight containers, preferably at a temperature not exceeding 30°.
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