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Sodium metabisulfite
Product Details
Category
Antioxidant Cosmetic Chemicals
Molecular Formula
Na2S2O5
CAS Number
7681-57-4
Synonyms
Sodium disulfite, Sodium pyrosulfite
Purity
0.97
Quality Level
100
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.
Melting Point
>300 °C (lit.)
Density
1.48 g/cm3
Product 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.
EC Number
231-673-0
Molecular Weight (g/mol)
190.11
Physical State
Powder or crystals
MDL number
MFCD00167602
NACRES
NA.55
pH
3.5-5 (50 g/L, H2O, 20℃)
InChI Key
HRZFUMHJMZEROT-UHFFFAOYSA-L
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
Stability
Stable. Incompatible with strong oxidizing agents, strong acids. Contact with strong acids releases a poisonous gas. May be moisture and air sensitive.
Hazard Codes
Xn,Xi
Safety Statements
26-39-46-36-16
WGK Germany
1
RTECS
UX8225000
Water Solubility
540 g/L (20°C)
Color
White to slightly yellow
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Please note: Our products and services are not intended to be used directly in diagnostic or therapeutic procedures.
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