| Identification | |
| Name: | Sodium sulfite |
| Synonyms: | Sulfurous acid, sodium salt;Natrium sulfurosum;disodium sulfite heptahydrate;disodium salt;Sodium sulfite, exsiccated;Sodium sulfite anhydrous;Sulfurous acid, sodium salt (1:2);Sulfurous acid, sodium salt, heptahydrate;Sodium sulfite ,anhydrous;Sodium Sulphite/Sodium Sulphite anhydrous;Natrii sulphis;Sodium sulfite heptahydrate (2:1:7);sodium; sulfurous acid;Natriumsulfid [German];Sulphurous acid, sodium salt;Sodium sulfite solution;EPA Pesticide Chemical Code 078203;Sulftech;Sodium sulfite heptahydrate;Exsiccated sodium sulfite;Sodium sulfite (Na2SO3);Disodium sulfite (Na2SO3);Sulfurous acid,compounds,disodium salt;anhydrous sodium sulphite;Natriumsulfit [German]; |
| CAS: | 7757-83-7 |
| EINECS: | 231-821-4 |
| Molecular Formula: | Na2SO3 |
| Molecular Weight: | 126.04 |
| InChI: | InChI=1/2Na.H2O3S/c;;1-4(2)3/h;;(H2,1,2,3)/q2*+1;/p-2 |
| Molecular Structure: |  |
| Properties | |
| Transport: | 82011? |
| Melting Point: | 500 oC |
| Density: | 2.633 |
| Stability: | Stable. Incompatible with strong acids. Moisture and air sensitive. |
| Refractive index: | 1,484 |
| Solubility: | 23 g/100 mL (20 oC) |
| Appearance: | white crystals or powder |
| Packinggroup: | O52 |
| HS Code: | 28321000 |
| Storage Temperature: | Store at RT. |
| Sensitive: | Hygroscopic |
| Color: | Small crystals or powder White crystals |
| Usage: | Chiefly in photographic developers and instead of hypo for fixing prints. |
| Safety Data | |
| Hazard Symbols |
Xn:Harmful
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