| CAS NO. | 7757-82-6, 7727-73-3 |
| EINECS NO. | 231-820-9 |
| FORMULA | Na2SO4 |
| MOL WT. | 1030 – 1130 |
| SYNONYMS | sodium sulphate, disodium sulphate, bisodium sulphate, kemol, sulfuric acid disodium salt, salt cake, thenardite, sodium sulphate anhydrous |
| PHYSICAL STATE | Hygroscopic white powder, Odorless |
| MELTING POINT | 880 – 888 C |
| BOILING POINT | 1100 C (Decomposes) |
| SPECIFIC GRAVITY | 2.66 – 2.75 |
| SOLUBILITY IN WATER | Soluble |
| pH | Aqueous solution is neutral |
| NFPA RATINGS | Health: 1; Flammability: 0; Reactivity: 0 |
| STABILITY | Stable under ordinary conditions |
| APPEARANCE | white powder |
| Na2SO4 | 99.0% min |
| WATER INSOLUBLES | 0.05% max |
| Mg | 0.15% max |
| Cl | 0.35% max |
| Fe | 0.002% max |
| pH | Neutral to slightly alkaline |
| MOISTURE | 0.2% max |
| WHITENESS | 80% min |
| PARTICLE SIZE | 50% (100 mesh) |
| PACKING | 25kgs, 50kgs, 1mt in Bag |
| HAZARD CLASS | Not regulated |