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08982

Sodium metabisulfite

Name: Sodium metabisulfite
Brand: SIAL

analytical standard

동의어(들):

E223, Sodium disulfite, Sodium pyrosulfite

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제품정보 (DICE 배송 시 비용 별도)

Linear Formula:

Na₂S₂O₅

CAS 번호:

7681-57-4

Molecular Weight:

190.11

E Number:

E223

PubChem Substance ID:

329748655

UNSPSC Code:

85151701

NACRES:

NA.24

EC Number:

231-673-0

MDL number:

MFCD00167602

기술 서비스

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도움 문의

속성

grade

analytical standard

Quality Level

100

assay

≥98.0% (iodometric, RT)

shelf life

limited shelf life, expiry date on the label

mp

>300 °C (lit.)

anion traces

chloride (Cl^-): ≤50 mg/kg, thiosulfate (S₂O₃^2-): ≤500 mg/kg

cation traces

As: ≤0.5 mg/kg, Ca: ≤10 mg/kg, Cd: ≤5 mg/kg, Co: ≤5 mg/kg, Cr: ≤5 mg/kg, Cu: ≤5 mg/kg, Fe: ≤5 mg/kg, K: ≤200 mg/kg, Mg: ≤5 mg/kg, Mn: ≤5 mg/kg, Ni: ≤5 mg/kg, Pb: ≤5 mg/kg, Zn: ≤5 mg/kg

application(s)

cleaning products
cosmetics
food and beverages
personal care

format

neat

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

설명

General description

Sodium metabisulfite is primarily used as an antioxidant and antimicrobial agent in a wide variety of foods and drugs. It is also used as the main additive in the prevention of melanosis in shrimp.

Application

Sodium metabisulfite may be used as an antioxidant which when added to anesthetic formulations serves to minimize epinephrine oxidation in the quantification of epinephrine in dental anesthetic solutions by capillary electrophoresis. Sodium metabisulfite may also be used as a standard in the determination of catecholamines in human plasma by high-performance liquid chromatography with electrochemical detection.