Potassium disulfite

SIAL/55777 - analytical standard

Synonym: E224; Potassium metabisulfite; Potassium pyrosulfite

CAS Number: 16731-55-8
Empirical Formula (Hill Notation): K₂O₅S₂
Molecular Weight: 222.32
EC Number: 240-795-3
MDL Number: MFCD00167605
Linear Formula: K₂S₂O₅
Product Type: Chemical

Catalog Number	PKG Qty.	Price	Quantity


45-55777-1G	1 g	$63.20 1/EA		Add To Favorites

Properties
Descriptions
Safety Info.
Basic Data

application(s)	cleaning products cosmetics food and beverages personal care
assay	≥98% (RT)
format	neat
grade	analytical standard
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
Quality Level	100
shelf life	limited shelf life, expiry date on the label
SMILES string	[K+].[K+].[O-]S(=O)S([O-])(=O)=O
solubility	H₂O: 200 mg/mL, clear to very slightly hazy, colorless
technique(s)	gas chromatography (GC): suitable
	HPLC: suitable

Application:	Refer to the product′s Certificate of Analysis for more information on a suitable instrument technique. Contact Technical Service for further support.
General description:	Potassium disulfite (Potassium metabisulfite, PMB) is an inorganic salt with antimicrobial properties. It is a sulfiting agent that prevents browning of foods.

Symbol	GHS05,GHS07
Signal word	Danger
Hazard statements	H318 - H335
Precautionary statements	P261 - P271 - P280 - P304 + P340 + P312 - P305 + P351 + P338 - P403 + P233
Hazard Codes	Xi
Risk Statements	31-41
Safety Statements	26-39
RIDADR	NONH for all modes of transport
WGK Germany	WGK 1
Supplemental Hazard Statements	EUH031

Purity	≥98% (RT)
UNSPSC	85151701

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