Millipore Sigma Vibrant Logo
Attention: We have moved. Merck Millipore products are no longer available for purchase on MerckMillipore.com.Learn More

105057 Potassium disulfite

for analysis EMSURE®

Potassium disulfite MSDS (material safety data sheet) or SDS, CoA and CoQ, dossiers, brochures and other available documents.

Synonyms: Potassium metabisulfite, Potassium pyrosulfite

CAS #: 16731-55-8 EC Number: 240-795-3 Molar Mass: 222.33 g/mol Chemical Formula: K₂S₂O₅ Hill Formula: K₂O₅S₂
View Products on Sigmaaldrich.com
105057
Purchase on Sigma-Aldrich

Overview

Replacement Information

Key Spec Table

CAS #EC NumberHill FormulaChemical FormulaMolar Mass
16731-55-8240-795-3K₂O₅S₂K₂S₂O₅222.33 g/mol

Products

Catalogue NumberPackaging Qty/Pack
1050570500 Plastic bottle 500 g
1050571000 Plastic bottle 1 kg
1050572500 Plastic bottle 2.5 kg
Description
Catalogue Number105057
SynonymsPotassium metabisulfite, Potassium pyrosulfite
References
Product Information
CAS number16731-55-8
EC number240-795-3
Hill FormulaK₂O₅S₂
Chemical formulaK₂S₂O₅
Molar Mass222.33 g/mol
HS Code2832 20 00
Quality LevelMQ300
Applications
Biological Information
Physicochemical Information
Melting Point150 °C (decomposition)
pH value3.0 - 4.5 (50 g/l, H₂O, 20 °C)
Bulk density1000 - 1300 kg/m3
Solubility450 g/l
Dimensions
Materials Information
Toxicological Information
LD 50 oralLD50 Rat 2300 mg/kg
Safety Information according to GHS
Hazard Pictogram(s) Hazard Pictogram(s)
Hazard Statement(s)H318: Causes serious eye damage.
EUH031: Contact with acids liberates toxic gas.
Precautionary Statement(s)P280: Wear eye protection/ face protection.
P305 + P351 + P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
P403 + P233: Store in a well-ventilated place. Keep container tightly closed.
Signal WordDanger
RTECSTT4920000
Storage class10 - 13 Other liquids and solids
WGKWGK 1 slightly hazardous to water
Disposal6
Sulfides and sulfites as well as other reducing substances, inorganic cyanides and isonitriles: Stir into sodium hypochlorite solution (Cat. No. 105614) and, if necessary, leave to react for several days. Caution: some substances may show a violent reaction! Draw off any toxic or flammable gases that may be formed. Excess oxidant should be neutralized with sodium thiosulfate (Cat. No. 106513). Container D or E.
Safety Information
Categories of dangerirritant
Product Usage Statements
Storage and Shipping Information
StorageStore at +2°C to +30°C.
Packaging Information
Transport Information
Declaration (railroad and road) ADR, RIDKein Gefahrgut
Declaration (transport by air) IATA-DGRNo Dangerous Good
Declaration (transport by sea) IMDG-CodeNo Dangerous Good
Supplemental Information
Specifications
Assay (iodometric)≥ 96 %
In water insoluble matter≤ 0.005 %
Chloride (Cl)≤ 0.005 %
As (Arsenic)≤ 0.0001 %
Cu (Copper)≤ 0.001 %
Fe (Iron)≤ 0.0005 %
Pb (Lead)≤ 0.001 %
Zn (Zinc)≤ 0.001 %
Global Trade Item Number
Catalogue Number GTIN
1050570500 04022536060095
1050571000 04022536060101
1050572500 04022536060125