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43908 Potassium metabisulfite, 95+%

CAS Number
16731-55-8
Synonyms
Potassium pyrosulfite
Potassium disulfite

Stock No. Size Price ($) Quantity Availability
43908-22 100g 27.50
43908-36 500g 85.50
43908-A3 2kg 292.00
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Potassium metabisulfite, 95+%

MDL
MFCD00167605
EINECS
240-795-3

Chemical Properties

Formula
K2S2O5
Formula Weight
222.32
Form
Powder
Melting point
190° dec.
Storage & Sensitivity
Air Sensitive. Store under Nitrogen. Ambient temperatures.
Solubility
Soluble in water. Insoluble in ethanol.

Applications

It serves as a component of certain photographic developers and its solution is used in photographic fixing, in the textile industry for dyeing and cotton printing. It is utilized to precipitate gold from solution in aqua regia.

Notes

Air sensitive. Incompatible with oxidizing agents, acids, sodium nitrate and sodium nitrite.

Literature References

Bowen, A. J.; Reynolds, A. G. Aroma compounds in Ontario Vidal and Riesling icewines. II. Effects of crop level. Food Res. Int. 2015, 76, 550-560.

Liu, G.; Fan, C.; Wu, J. Fixation of sulfur dioxide into small molecules. Org. Biomol. Chem. 2015, 13 (6), 1592-1599.

GHS Hazard and Precautionary Statements

Hazard Statements: H315-H319-H335

Causes skin irritation. Causes serious eye irritation. May cause respiratory irritation.

Precautionary Statements: P261-P280a-P305+P351+P338-P304+P340-P405-P501a

Avoid breathing dust/fume/gas/mist/vapours/spray. Wear protective gloves and eye/face protection. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. IF INHALED: Remove to fresh air and keep at rest in a position comfortable for breathing. Store locked up. Dispose of contents/container in accordance with local/regional/national/international regulations.

Other References

Merck
14,7645
Harmonized Tariff Code
2832.20
TSCA
Yes

Recommended

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  • 14518

    Sodium thiosulfate pentahydrate, ACS, 99.5-101.0%
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