161519

Sodium metabisulfite

reagent grade, 97%

• Synonyma: Sodium disulfite, Sodium pyrosulfite
• Lineární vzorec: Na₂S₂O₅
• Číslo CAS: 7681-57-4
• Molekulová hmotnost: 190.11
• EC Number: 231-673-0
• MDL number: MFCD00167602
• UNSPSC Code: 12352302
• PubChem Substance ID: 329751131
• NACRES: NA.55
• assay: 97%
• grade: reagent grade
• form: powder or crystals
• solubility: water: soluble 650 g/L at 20 °C

Vlastnosti

• grade: reagent grade
• Quality Level: 100
• assay: 97%
• form: powder or crystals
• pH: 4.5 (20 °C, 50 g/L)
• mp: >300 °C (lit.)
• solubility: water: soluble 650 g/L at 20 °C
• 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

Popis

General description

Sodium metabisulfite (MBS, Sodium disulfite) is the sodium salt of disulphurous (pyrosulfurous) acid. It is also commonly added to various food products and wines as a preservative.

Application

Sodium metabisulfite may be used to initiate the cross-linking of polybutadiene by free radical polymerization. It may be used to prevent the oxidation (as antioxidant) during the preparation of stock solutions of 6-hydroxydopamine (6-OHDA) and 6-OHDA HBr in various studies.

Bezpečnostní informace

• 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
• Storage Class: 13 - Non Combustible Solids
• wgk_germany: WGK 1
• flash_point_f: Not applicable
• flash_point_c: Not applicable