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| Customization: | Available |
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| CAS No.: | 7757-82-6 |
| Formula: | Na2so4 |
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project | index | |||||
Category I | Category II | Category III | ||||
Superior products | First-class products | First-class products | Qualified products | First-class products | Qualified products | |
Sodium sulfate (Na2SO4)w/% | 99.6 | 99.0 | 98.0 | 97.0 | 95.0 | 92.0 |
Water insoluble matter w/% | 0.005 | 0.05 | 0.10 | 0.20 | / | / |
Calcium and magnesium (calculated as Mg) w/% ≤ | / | 0.15 | 0.30 | 0.40 | 0.6 | / |
Calcium (Ca) w/% | 0.01 | / | / | / | / | / |
Magnesium (Mg) w/% | 0.01 | / | / | / | / | / |
Chloride (as CI) w/% | 0.05 | 0.35 | 0.70 | 0.90 | 2.0 | / |
Iron (Fe) w/% ≤ | 0.0005 | 0.002 | 0.010 | 0.040 | / | / |
Water w/% | 0.05 | 0.20 | 0.5 | 1.0 | 1.5 | / |
Whiteness(R457)/% ≥ | 88 | 82 | 82 | / | / | |
pH (50 g/L aqueous solution, 25 ºC) | 6-8 | // | / | / | / | / |





