08982

Sodium metabisulfite

analytical standard

• Sinônimo(s): E223, Sodium disulfite, Sodium pyrosulfite
• Fórmula linear: Na₂S₂O₅
• Número CAS: 7681-57-4
• Peso molecular: 190.11
• Número CE: 231-673-0
• Número MDL: MFCD00167602
• Código UNSPSC: 85151701
• ID de substância PubChem: 329748655
• Número E: E223
• NACRES: NA.24

Propriedades

• grau: analytical standard
• Nível de qualidade: 100
• Ensaio: ≥98.0% (iodometric, RT)
• prazo de validade: limited shelf life, expiry date on the label
• pf: >300 °C (lit.)
• traços de ânion: chloride (Cl^-): ≤50 mg/kg; thiosulfate (S₂O₃^2-): ≤500 mg/kg
• traços de cátion: As: ≤0.5 mg/kg; Ca: ≤10 mg/kg; Cd: ≤5 mg/kg; Co: ≤5 mg/kg; Cr: ≤5 mg/kg; Cu: ≤5 mg/kg; Fe: ≤5 mg/kg; K: ≤200 mg/kg; Mg: ≤5 mg/kg; Mn: ≤5 mg/kg; Ni: ≤5 mg/kg; Pb: ≤5 mg/kg; Zn: ≤5 mg/kg
• aplicação(ões): cleaning products; cosmetics; food and beverages; personal care
• formato: neat
• cadeia de caracteres SMILES: [Na+].[Na+].[O-]S(=O)S([O-])(=O)=O
• InChI: 1S/2Na.H2O5S2/c;;1-6(2)7(3,4)5/h;;(H,1,2)(H,3,4,5)/q2*+1;/p-2
• chave InChI: HRZFUMHJMZEROT-UHFFFAOYSA-L

Descrição

Descrição geral

Sodium metabisulfite is primarily used as an antioxidant and antimicrobial agent in a wide variety of foods and drugs. It is also used as the main additive in the prevention of melanosis in shrimp.

Aplicação

Sodium metabisulfite may be used as an antioxidant which when added to anesthetic formulations serves to minimize epinephrine oxidation in the quantification of epinephrine in dental anesthetic solutions by capillary electrophoresis. Sodium metabisulfite may also be used as a standard in the determination of catecholamines in human plasma by high-performance liquid chromatography with electrochemical detection.

Nota de análise

metal trace analysis: corresponds to requirements

Informações de segurança

• Pictogramas: GHS05,GHS07
• Palavra indicadora: Danger
• Frases de perigo: H302,H318
• Declarações de precaução: P264 - P270 - P280 - P301 + P312 - P305 + P351 + P338 - P501
• Classificações de perigo: Acute Tox. 4 Oral - Eye Dam. 1
• Perigos de suplementos: EUH031
• Código de classe de armazenamento: 13 - Non Combustible Solids
• Classe de risco de água (WGK): WGK 1
• Ponto de fulgor (°F): Not applicable
• Ponto de fulgor (°C): Not applicable