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Natriumsulfit
Na2SO3 · SODIUM SULPHITE · Sodium sulfite anhydrous · SODIUM SULPHITE ANHYDROUS · natriumsulfid · natriumsulfit · Anhydrous sodium sulphite · SULPHITES
Identifikatoren & physikalische Daten
| CAS No. | 7757-83-7 |
|---|---|
| Summenformel | Na2SO3 |
| Durchschnittliche Molmasse | 126,05 g/mol |
| Monoisotopische Masse | 125,93635342 g/mol |
| SMILES | O=S([O-])[O-].[Na+].[Na+] |
| InChIKey | GEHJYWRUCIMESM-UHFFFAOYSA-L |
| PubChem CID | 24437 |
| ChEMBL | CHEMBL1945334 |
| ChEBI | CHEBI:86477 |
| EC No. | 231-821-4 |
| DTXSID | DTXSID2044260 |
| Lokaler Name | Natriumsulfit |
Chemische & physikalische Eigenschaften
| Polarare Oberfläche (TPSA) | 82,4 |
|---|---|
| H-Brücken-Donoren | 0 |
| H-Brücken-Akzeptoren | 4 |
| Frei drehbare Bindungen | 0 |
| Schwere Atome | 6 |
| Formalladung | 0 |
| Komplexität | 18,8 |
| Stoffklassen | Other Classes -> Sulfites |
| Kosmetika | Cosmetic ingredients (Sodium Sulfite) -> CIR (Cosmetic Ingredient Review)Preservative |
| pH | 8,5-11,5 (anhydrous: 10 % solutionheptahydrate: 20 % solution)pH about 99.0-10.5 (25℃, 1M in H2O) |
| LogP (Verteilungskoeffizient) | -4 |
| Geruch | Odorless |
| Geschmack | Saline, sulfurous taste |
| Lebensmittelzusatzstoffe | ANTIOXIDANT, COLOR OR COLORING ADJUNCT, DOUGH STRENGTHENER, FLOUR TREATING AGENT, FORMULATION AID, OXIDIZING OR REDUCING AGENT, PH CONTROL AGENT -> FDA Substance added to food |
| Dichte | 2.633 at 59 °F (USCG, 1999) - Denser than waterwill sink2.63 g/cu cm2.63 g/cm³2.633 @25 °C |
| Color/Form | Small crystals or powderWhite hexagonal crystalsWhite crystals or powder |
| Löslichkeit | Soluble in 3.2 parts (NTP, 1992)Colorless, monoclinic crystalsdemsity: 1.56 g/cu cmsolubility: 30.7 g/100 g water at 25 °Cslightly solluble in ethanolunstable /Sodium sulfite heptahydrate/In water, 30.7 g/100 g water at 25 °CSoluble in 3.2 parts waterSoluble in glycerolvery slightly soluble in alcoholSparingly soluble in alcoholH2O: 1 M at 20 °C, clear, colorless23 g/100 mL (20 ºC) |
| Animal Drugs | Pharmaceuticals -> UK Veterinary Medicines Directorate List |
| Siedepunkt | Decomposes (NTP, 1992) |
| Schmelzpunkt | 500 °C |
| Brechungsindex | 1,484 |
| Lagerbedingungen | Store at +5°C to +30°C. |
| Aggregatzustand | Solid |
| Wichte | 2.633 |
| Farbe | White to slightly yellow |
| Geruch | Odorless |
| Spezifische Wärmekapazität | Cp(crystal): 0.95 J/(g·K), at 25℃ |
| Merck | 14,8682 |
| Stabilität | Stable. Incompatible with strong acids. Moisture and air sensitive. |
| Kosmetik-Inhaltsstoffe Funktionen | REDUCINGANTIOXIDANTHAIR WAVING OR STRAIGHTENING |
| InChI | 1S/2Na.H2O3S/c1-4(2)3/h(H2,1,2,3)/q2*+1/p-2 |
| InChIKey | GEHJYWRUCIMESM-UHFFFAOYSA-L |
| SMILES | [Na+].[Na+].[O-]S([O-])=O |
| CAS Datenbank | 7757-83-7(CAS DataBase Reference) |
| NIST chemische Informationen | sodium sulfite(7757-83-7) |
| EPA chemische Informationen | Sodium sulfite (7757-83-7) |
| Absorption | cut-off at 265nm in H2O at 1M |
Sicherheit & Vorschriften
| GHS-Einstufung | This chemical does not meet GHS hazard criteria for 24.9% (618 of 2482) of reports.DangerH302 (18.3%): Harmful if swallowed [Warning Acute toxicity, oral]P260, P264, P264+P265, P270, P280, P301+P317, P301+P330+P331, P302+P352, P302+P361+P354, P304+P340, P305+P351+P338, P305+P354+P338, P316, P321, P330, P332+P317, P337+P317, P362+P364, P363, P405, and P501 (click each P-code to see the statement)Aggregated GHS information provided per 2482 reports by companies from 19 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.Not Classified |
|---|---|
| Regulatorische Informationen | Chemical: Sulfurous acid, disodium saltSulfurous acid, sodium salt (1:2) is listed on the EPA's Chemical Data Reporting (CDR) system. Manufacturers and importers of Sulfurous acid, sodium salt (1:2) are required to report information about their production and use of this chemical to the EPA under the Toxic Substances Control Act (TSCA). (40 eCFR Part 711)Status: Active Update: 24-04-2023 https://echa.europa.eu/registration-dossier/-/registered-dossier/15131Disodium sulphite: Does not have an individual approval but may be used under an appropriate group standard |
| Weitere Sicherheitsinformationen | IMAP assessments - Sulfites: Human health tier II assessment |
| Brandgefahren | Literature sources indicate that this compound is noncombustible. (NTP, 1992)Not combustible. Gives off irritating or toxic fumes (or gases) in a fire. |
| Gesundheitsgefahren | When ingested, solutions cause gastric irritation by the liberation of sulfurous acid. Because of rapid oxidation to sulfate, sulfites are well tolerated until large doses are reachedthen violent colic and diarrhea, circulatory disturbances, central nervous depression, and death can occur. (USCG, 1999) |
| Gefahrenübersicht | A case of occupational asthma, confirmed by specific inhalation challenge, was reported in a worker whose job was to sprinkle dry metabisulfite on potatoes. [Malo JL, Cartier A, Desjardins A. Occupational asthma caused by dry metabisulphite. Thorax 1995 May50(5)585-6.] Similar cases have been reported in the wine, laundry, and lobster fishing industries. [Madsen J, Sherson D, Kjoller H, Hansen I, Rasmussen K. Occupational asthma caused by sodium disulphite in Norwegian lobster fishing. Occup Environ Med 2004 |
Anwendungen & Verwendung
Verwenden
sodium sulfite has anti-septic, preservative, and anti-oxidant properties. Sodium sulfite is also a topical anti-fungal.