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13459

Sigma-Aldrich

Sodium metabisulfite

puriss., meets analytical specification of Ph. Eur., BP, NF, FCC, E223, dry, 97-100.5%

Synonyme(s) :

Sodium disulfite, Sodium pyrosulfite

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About This Item

Formule linéaire :
Na2S2O5
Numéro CAS:
Poids moléculaire :
190.11
Numéro CE :
Numéro MDL:
Code UNSPSC :
12352302
ID de substance PubChem :
Nomenclature NACRES :
NA.21

Qualité

puriss.
dry
meets analytical specification of Ph. Eur., BP, NF, FCC, E223

Niveau de qualité

Pureté

97-100.5%

Forme

powder or crystals

Composition

SO2, 65.0-67.4%

Impuretés

residue of solvents, complies
≤0.02% thiosulfate (S2O3)

pH

3.5-5.0 (20 °C, 5%)

Pf

>300 °C (lit.)

Traces d'anions

chloride (Cl-): ≤100 mg/kg

Traces de cations

As: ≤2 mg/kg
Cu: ≤10 mg/kg
Fe: ≤10 mg/kg
Hg: ≤1 mg/kg
Pb: ≤2 mg/kg
Se: ≤5 mg/kg
Zn: ≤10 mg/kg

Adéquation

complies for appearance of solution

Chaîne 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

Clé InChI

HRZFUMHJMZEROT-UHFFFAOYSA-L

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Description générale

Sodium metabisulfite (MBS, Sodium disulfite) is an inorganic salt. It is the sodium salt of disulphurous (pyrosulfurous) acid. It is widely used as reducing agent in textile and photography industry. It is commonly added to various foods and wines as preservative.

Application

Sodium metabisulfite was used to initiate the cross-linking of polybutadiene in the cores of the vesicle membranes by free radical polymerization in solution. It has been used to prevent the oxidation (as antioxidant) during the preparation of stock solutions of 6-hydroxydopamine in various studies.

Pictogrammes

CorrosionExclamation mark

Mention d'avertissement

Danger

Mentions de danger

Classification des risques

Acute Tox. 4 Oral - Eye Dam. 1

Risques supp

Code de la classe de stockage

13 - Non Combustible Solids

Classe de danger pour l'eau (WGK)

WGK 1

Point d'éclair (°F)

Not applicable

Point d'éclair (°C)

Not applicable


Certificats d'analyse (COA)

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Consulter la Bibliothèque de documents

W Wright et al.
The American review of respiratory disease, 141(6), 1400-1404 (1990-06-01)
Sodium metabisulfite (MBS) is used as a preservative in food and wine and frequently triggers attacks of asthma. To determine the characteristics of responses to inhaled MBS, 30 asthmatic subjects and 16 nonasthmatic subjects inhaled MBS, in concentrations of 6.2
Johanne Louise Neiiendam et al.
Journal of neurochemistry, 91(4), 920-935 (2004-11-05)
The Neural Cell Adhesion Molecule (NCAM) plays a crucial role in development of the central nervous system regulating cell migration, differentiation and synaptogenesis. NCAM mediates cell-cell adhesion through homophilic NCAM binding, subsequently resulting in activation of the fibroblast growth factor
Zhiliang Cheng et al.
Langmuir : the ACS journal of surfaces and colloids, 24(15), 8169-8173 (2008-06-24)
The ability of chelated Gd to serve as an effective magnetic resonance (MR) contrast agent largely depends on fast exchange rates between the Gd-bound water molecules and the surrounding bulk water. Because water diffuses slowly across lipid bilayers, liposomes with
Laurie H L Sellings et al.
The Journal of neuroscience : the official journal of the Society for Neuroscience, 23(15), 6295-6303 (2003-07-18)
Convergent evidence suggests that amphetamine (AMPH) exerts its rewarding and locomotor stimulating effects via release of dopamine in the nucleus accumbens. However, there is no consensus as to the relative contributions of core and medial shell subregions to these effects.
Eagleson M.
Concise Encyclopedia Chemistry, 337-337 (1994)

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