Skip to Content
Merck
CN
All Photos(1)

Documents

08982

Supelco

Sodium metabisulfite

analytical standard

Synonym(s):

E223, Sodium disulfite, Sodium pyrosulfite

Sign Into View Organizational & Contract Pricing
All Photos(1)

About This Item

Linear Formula:
Na2S2O5
CAS Number:
7681-57-4
Molecular Weight:
190.11
EC Number:
231-673-0
MDL number:
MFCD00167602
UNSPSC Code:
85151701
PubChem Substance ID:
329748655
E Number:
E223
NACRES:
NA.24

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 (S2O32-): ≤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

Looking for similar products? Visit Product Comparison Guide

Related Categories

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.

Analysis Note

metal trace analysis: corresponds to requirements

Pictograms

CorrosionExclamation mark
GHS05,GHS07

Signal Word

Danger

Hazard Statements

H302,H318

Hazard Classifications

Acute Tox. 4 Oral - Eye Dam. 1

Supplementary Hazards

EUH031

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Choose from one of the most recent versions:

Certificates of Analysis (COA)

Lot/Batch Number

Sorry, we don't have COAs for this product available online at this time.

If you need assistance, please contact Customer Support.

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

Determination of catecholamines in human plasma by high-performance liquid chromatography with electrochemical detection.
Raggi MA, et al.
Journal of Chromatography. B, Biomedical Sciences and Applications, 730(2), 201-211 (1999)
The molecular mechanisms of sodium metabisulfite on the expression of KATP and L-Ca2+ channels in rat hearts.
Zhang Q, et al.
Regulatory Toxicology and Pharmacology, 72(3), 440-446 (2015)
Quantitative assay for epinephrine in dental anesthetic solutions by capillary electrophoresis.
Kranack A and Chen DY
Analyst, 123(7), 1461-1463 (1998)
Standardization of sodium metabisulfite solution concentrations and immersion time for farmed shrimp Litopenaeus vannamei.
Andrade LTD, et al.
Ciencia Rural, 45(3), 499-504 (2015)
Ivana Mara da Costa Machado Matos Carvalho et al.
Chemosphere, 82(7), 1056-1061 (2010-11-09)
Sodium metabisulfite is used in marine shrimp harvesting to prevent the occurrence of black spots. Shrimps are soaked in a sodium metabisulfite solution in ice, which is disposed of in sewages that run into marine canals, creating an environmental hazard.
View All Related Papers

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service