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161519

Sigma-Aldrich

Sodium metabisulfite

reagent grade, 97%

Synonyme(s) :

Sodium disulfite, Sodium pyrosulfite

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About This Item

Formule linéaire :
Na2S2O5
Numéro CAS:
7681-57-4
Poids moléculaire :
190.11
Numéro CE :
231-673-0
Numéro MDL:
MFCD00167602
Code UNSPSC :
12352302
ID de substance PubChem :
329751131
Nomenclature NACRES :
NA.55

Qualité

reagent grade

Pureté

97%

Forme

powder or crystals

pH

4.5 (20 °C, 50 g/L)

Pf

>300 °C (lit.)

Solubilité

water: soluble 650 g/L at 20 °C

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 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.

Pictogrammes

CorrosionExclamation mark
GHS05,GHS07

Mention d'avertissement

Danger

Mentions de danger

H302,H318

Classification des risques

Acute Tox. 4 Oral - Eye Dam. 1

Risques supp

EUH031

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)

Recherchez un Certificats d'analyse (COA) en saisissant le numéro de lot du produit. Les numéros de lot figurent sur l'étiquette du produit après les mots "Lot" ou "Batch".

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