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307750

Sigma-Aldrich

Potassium disulfate

ReagentPlus®, 99%

Synonym(s):

Potassium pyrosulfate

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About This Item

Empirical Formula (Hill Notation):
K2S2O7
CAS Number:
7790-62-7
Molecular Weight:
254.32
EC Number:
232-216-8
MDL number:
MFCD00011385
UNSPSC Code:
12352302
PubChem Substance ID:
24858622
NACRES:
NA.22

Quality Level

100

product line

ReagentPlus®

Assay

99%

form

powder

density

2.28 g/mL at 25 °C (lit.)

SMILES string

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

InChI

1S/2K.H2O7S2/c;;1-8(2,3)7-9(4,5)6/h;;(H,1,2,3)(H,4,5,6)/q2*+1;/p-2

InChI key

KAQHZJVQFBJKCK-UHFFFAOYSA-L

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Application

Potassium disulfate (K2S2O7) can be used:
  • As a salt catalyst for the conversion of hemicellulose into reducing sugars such as xylose and galactose by mechanocatalysis .
  • In the preparation of diacylbenzenes via Pd-catalyzed decarboxylative acylation of aromatic ketones with oxocarboxylic acids.
  • As an oxidant for the preparation of monosubstituted triazoles from aryl azides and propargyl alcohol using Ag2O as a catalyst.

Legal Information

ReagentPlus is a registered trademark of Merck KGaA, Darmstadt, Germany

Pictograms

Skull and crossbonesCorrosion
GHS06,GHS05

Signal Word

Danger

Hazard Statements

H314,H331

Hazard Classifications

Acute Tox. 3 Inhalation - Eye Dam. 1 - Skin Corr. 1A

Storage Class Code

6.1B - Non-combustible acute toxic Cat. 1 and 2 / very toxic hazardous materials

WGK

WGK 3

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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