| Product Name | Sodium hydrosulfite |
| CAS No. | 7775-14-6 |
| Synonyms | Sodium dithionite hydrate; Sodium hydrosulphite; Sodium dithionite; disodium dithionite |
| InChI | InChI=1/2Na.H2O4S2/c;;1-5(2)6(3)4/h;;(H,1,2)(H,3,4)/q2*+1;/p-2 |
| Molecular Formula | Na2O4S2 |
| Molecular Weight | 174.1071 |
| Melting point | 300℃ (dec.) |
| Water solubility | 250 g/L (20℃) |
| Hazard Symbols |  Xn:Harmful; |
| Risk Codes | R22:; R31:; R7:; |
| Safety | S26:; S28A:; S43E:; S7/8:; |
7775-14-6 sodium hydrosulfite
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