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Sodium sulfite CAS#7757-83-7
CAS Number: 7757-83-7
Chemical Formula: Na2O3S
Synonyms:
anhydroussodiumsulfite
disodiumsulfite
exsiccatedsodiumsulfite
MOQ (Minimum Order Quantity): 1 FCL (Full Container Load)
Appearance: White Powder
Sodium sulfite CAS#7757-83-7
| As a soluble sodium salt of sulfurous acid, Sodium sulfite (Na2SO3) shows blenching, de-sulfurizing and dechlorinating properties which is widely applied in various fields. It is primarily used in the pulp and papermaking industry due to its blenching activity. It can serve as a good additive to help preserve the fresh appearance of good products. Besides, sodium sulfite is a component in many pharmaceuticals, which is effective to maintain the potency and stability of drugs. It can also be applied for water treatment as an oxygen scavenger agent and applied in flue gas desulfurization and preservation of photo developer solutions, etc. |
| Sodium sulfite Chemical Properties |
| Melting point | 500 °C |
| bulk density | 1480kg/m3 |
| density | 2.63 |
| refractive index | 1,484 |
| storage temp. | Store at +5°C to +30°C. |
| solubility | H2O: 1 M at 20 °C, clear, colorless |
| form | Solid |
| color | White to slightly yellow |
| Specific Gravity | 2.633 |
| Odor | Odorless |
| PH | 9.0-10.5 (25℃, 1M in H2O) |
| PH Range | 9.0 - 10.5 at 126 g/l at 25 °C |
| Water Solubility | 23 g/100 mL (20 ºC) |
| Sensitive | Hygroscopic |
| Merck | 14,8682 |
| Stability: | Stable. Incompatible with strong acids. Moisture and air sensitive. |
| Cosmetics Ingredients Functions | REDUCING ANTIOXIDANT HAIR WAVING OR STRAIGHTENING |
| InChI | 1S/2Na.H2O3S/c;;1-4(2)3/h;;(H2,1,2,3)/q2*+1;/p-2 |
| InChIKey | GEHJYWRUCIMESM-UHFFFAOYSA-L |
| SMILES | [Na+].[Na+].[O-]S([O-])=O |
| CAS DataBase Reference | 7757-83-7(CAS DataBase Reference) |
| NIST Chemistry Reference | sodium sulfite(7757-83-7) |
| EPA Substance Registry System | Sodium sulfite (7757-83-7) |
| Absorption | cut-off at 265nm in H2O at 1M |
| Safety Information |
| Hazard Codes | Xn |
| Risk Statements | 31-36/37/38-22-40-36/38 |
| Safety Statements | 24/25-36-26-22 |
| WGK Germany | 1 |
| RTECS | WE2150000 |
| F | 3-10 |
| TSCA | TSCA listed |
| HS Code | 28321000 |
| Storage Class | 13 - Non Combustible Solids |
| Hazardous Substances Data | 7757-83-7(Hazardous Substances Data) |
| Toxicity | LD50 i.v. in mice: 175 mg/kg, Hoppe, Goble, J. Pharmacol. Exp. Ther. 101, 101 (1951) |
Product Application Of Sodium sulfite CAS#7757-83-7
Sodium sulfite is used as an antioxidant in applications similar to those for sodium metabisulfite. It is also an effective antimicrobial preservative, particularly against fungi at low pH (0.1% w/v of sodium sulfite is used). Sodium sulfite is used in cosmetics, food products, and pharmaceutical applications such as parenteral formulations, inhalations, oral formulations, and topical preparations.
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