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1.05056

Potassium disulfite

E 224

Synonym(s):

Potassium disulfite, Potassium metabisulfite, Potassium pyrosulfite

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About This Item

Empirical Formula (Hill Notation):
K2O5S2
CAS Number:
16731-55-8
Molecular Weight:
222.32
UNSPSC Code:
12352302
E Number:
E224
EC Index Number:
240-795-3
MDL number:
MFCD00167605
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Quality Segment

400

form

solid

pH

3.0-4.5 (20 °C, 50 g/L in H2O)

mp

150 °C (decomposition)

application(s)

pharma/biopharma processes

storage temp.

15-25°C

SMILES string

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

General description

We offer a range of high quality critical raw materials plus the documentation and expertise to help our customers meet stringent regulatory requirements. Our SAFC® portfolio of high-quality products withstands strict quality control procedures.

Application

Potassium disulfite shows preservative and antioxidant properties. Potassium disulfite E224 is suitable for use in pharmaceutical processes and as food additive.

Legal Information

Emprove is a registered trademark of Merck KGaA, Darmstadt, Germany
SAFC is a registered trademark of Merck KGaA, Darmstadt, Germany

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pictograms

Corrosion
GHS05

signalword

Danger

supp_hazards

EUH031

Storage Class

11 - Combustible Solids

wgk

WGK 1

hcodes

H315,H318

Hazard Classifications

Eye Dam. 1 - Skin Irrit. 2

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