55777

Supelco

Potassium disulfite

analytical standard

Synonym(s):
Potassium pyrosulfite, Potassium metabisulfite, E224
Linear Formula:
K2S2O5
CAS Number:
Molecular Weight:
222.32
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.24
Pricing and availability is not currently available.

Quality Level

grade

analytical standard

assay

≥98% (RT)

form

neat

shelf life

limited shelf life, expiry date on the label

application(s)

HPLC: suitable
gas chromatography (GC): suitable

solubility

H2O: 200 mg/mL, clear to very slightly hazy, colorless

Featured Industry

Cleaning Products
Cosmetics
Food and Beverages
Personal Care

format

neat

SMILES string

[K+].[K+].[O-]S(=O)S([O-])(=O)=O

InChI

1S/2K.H2O5S2/c;;1-6(2)7(3,4)5/h;;(H,1,2)(H,3,4,5)/q2*+1;/p-2

Inchi Key

RWPGFSMJFRPDDP-UHFFFAOYSA-L

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General description

Potassium disulfite (Potassium metabisulfite, PMB) is an inorganic salt with antimicrobial properties. It is a sulfiting agent that prevents browning of foods.

Application

Refer to the product′s Certificate of Analysis for more information on a suitable instrument technique. Contact Technical Service for further support.

Pictograms

CorrosionExclamation mark

Signal Word

Danger

Hazard Statements

Target Organs

Respiratory system

Supp Hazards

EUH031

RIDADR

NONH for all modes of transport

WGK Germany

WGK 1

Certificate of Analysis
Certificate of Origin
Sven Hildebrand et al.
Scientific reports, 9(1), 10880-10880 (2019-07-28)
Optical clearing techniques and light sheet microscopy have transformed fluorescent imaging of rodent brains, and have provided a crucial alternative to traditional confocal or bright field techniques for thin sections. However, clearing and labeling human brain tissue through all cortical...

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