08982

メタ重亜硫酸ナトリウム

analytical standard

• 別名: ピロ亜硫酸ナトリウム, 二亜硫酸ナトリウム
• 化学式: Na₂S₂O₅
• CAS番号: 7681-57-4
• 分子量: 190.11
• E Number: E223
• PubChem Substance ID: 329748655
• UNSPSC Code: 85151701
• NACRES: NA.24
• EC Number: 231-673-0
• MDL number: MFCD00167602

特性

• grade: analytical standard
• Quality Segment: 100
• assay: ≥98.0% (iodometric, RT)
• shelf life: limited shelf life, expiry date on the label
• mp: >300 °C (lit.)
• anion traces: chloride (Cl^-): ≤50 mg/kg, thiosulfate (S₂O₃^2-): ≤500 mg/kg
• cation traces: 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
• application(s): cleaning products; cosmetics; food and beverages; personal care
• format: neat
• SMILES string: [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
• InChI key: HRZFUMHJMZEROT-UHFFFAOYSA-L

詳細

General description

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.

Application

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.

Analysis Note

metal trace analysis: corresponds to requirements

安全性情報

• pictograms: GHS05,GHS07
• signalword: Danger
• hcodes: H302,H318
• pcodes: P264 - P270 - P280 - P301 + P312 - P305 + P351 + P338 - P501
• Hazard Classifications: Acute Tox. 4 Oral - Eye Dam. 1
• supp_hazards: EUH031
• 保管分類: 13 - Non Combustible Solids
• wgk: WGK 1
• flash_point_f: Not applicable
• flash_point_c: Not applicable