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Sigma-Aldrich 31448 Sodium metabisulfite puriss. p.a., ACS reagent, reag. Ph. Eur., dry, 98-100.5% CAS No.: 7681-57-4 6x2.5 kg
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LB.SA.31448-6X2.5KG
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Synonym(s): Sodium disulfite, Sodium pyrosulfite Linear Formula: Na2S2O5 CAS Number: 7681-57-4 Molecular Weight: 190.11 EC Number: 231-673-0 MDL number: MFCD00167602 UNSPSC Code: 12352302 PubChem Substance ID: 329753770 NACRES: NB.24 Assay: 98-100.5% Form: powder
| Sigma-Aldrich 31448 Sodium metabisulfite puriss. p.a., ACS reagent, reag. Ph. Eur., dry, 98-100.5% |
| Synonym(s): Sodium disulfite, Sodium pyrosulfite Linear Formula: Na2S2O5 CAS Number: 7681-57-4 Molecular Weight: 190.11 EC Number: 231-673-0 MDL number: MFCD00167602 UNSPSC Code: 12352302 PubChem Substance ID: 329753770 NACRES: NB.24 Assay: 98-100.5% Form: powder |
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PROPERTIES
grade ACS reagent puriss. p.a.
Quality Level 200 Agency reag. Ph. Eur. Assay 98-100.5% form powder quality dry impurities ≤0.01% thiosulfate (S2O3) pH 3.5-5.0 (20 °C, 5%) mp >300 °C (lit.) anion traces chloride (Cl-): ≤50 mg/kg cation traces As: ≤0.5 mg/kg Ca: ≤50 mg/kg Cd: ≤50 mg/kg Co: ≤50 mg/kg Cu: ≤5 mg/kg Fe: ≤5 mg/kg K: ≤100 mg/kg Ni: ≤50 mg/kg Pb: ≤5 mg/kg Zn: ≤10 mg/kg 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 DESCRIPTION General description Sodium metabisulfite (MBS, Sodium disulfite) is an inorganic salt. It is the sodium salt of disulphurous (pyrosulfurous) acid. It is widely used in textile dyeing, photography and paper industry.[1] It is also commonly added to various food products and wines as a preservative.[2] Application Sodium metabisulfite may be used as an initiator during the cross-linking polymerization of polybutadiene in the cores of the vesicle membranes.[3] It may be added as an antioxidant during the preparation of stock solutions of 6-hydroxydopamine in various studies.[4][5] |
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