Quality is our main ingredient
BRC Certified DFI Accreditations

POTASSIUM METABISULPHITE POWDER - DFI-474369

Published: 28/01/2019

Description

FormulaK2S2O5
Molecular weight222.33
SynonymsPotassium bisulphite anhydrous, potassium pyrosulphite, potassium disulphite.
AppearanceWhite crystalline powder, with slight odour of sulphur dioxide
StorageStore the product in a dry and cool place because the wet product easily oxidises to potassium sulphate, while heated over 60ºC develops SO2, yielding potassium sulphite.
Country of originItaly

Specification

Specific Gravity1 to 1.3kg/dm3
Water(Solubility)Increases with the temperature
Assay Max:97.2% K2S2O5
Assay Max:56% SO2
Thiosulphate (S2O3) Max:0.04%
Iron (Fe)Max 0.0005%
Heavy metalsMax 0.001%
SeleniumMax 0.0002%
ArsenicMax 0.0003%
LeadMax 0.0002%
MercuryMax 0.0001%
Packaging25 kg