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Technical description of sodium sulfate.
| Indicator | Value |
|---|---|
| Appearance | Free-flowing white powder |
| Mass fraction of sodium sulfate, (Na2SO4), % | 99.5 |
| Mass fraction of water-insoluble residue, % | 0.2 |
| Mass fraction of chlorides in terms of sodium chloride (NaCl), % | 0.2 |
| Mass fraction of water, % | 0.1 |
| Indicator of activity of hydrogen ions of an aqueous 1% solution of sodium sulfate | 8.2 |
