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Sigma-Aldrich

Potassium disulfate

ReagentPlus®, 99%

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Synonym(s):
Potassium pyrosulfate
Empirical Formula (Hill Notation):
K2S2O7
CAS Number:
7790-62-7
Molecular Weight:
254.32
EC Number:
232-216-8
MDL number:
MFCD00011385
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

CorrosionSkull and crossbones
GHS05,GHS06

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

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Pui-Yiu Lee et al.
Organic letters, 19(8), 2082-2085 (2017-04-05)
A Pd-catalyzed decarboxylative acylation of aromatic ketones with α-oxocarboxylic acids was developed, and 1,2-diacylbenzenes were formed in up to 90% yield with excellent ortho-selectivity. This work demonstrates the first successful attempt to direct C-H acylation of aromatic ketones without the
One-Pot Synthesis of 1-Monosubstituted 1, 2, 3-Triazoles from Propargyl Alcohol
Han C, et al.
Synlett, 29(05), 673-677 (2018)
Laura Schneider et al.
Bioresource technology, 234, 1-7 (2017-03-21)
The catalytic conversion of lignocellulosic biomass is attractive due to the feasible generation of valuable products such as reducing sugars which constitute the basic substrates for chemical and transportation fuel production, as well as the production of renewable hydrogen. This
Titrimetric determination of glutaraldehyde concentrations.
T Kalina et al.
Folia morphologica, 35(2), 113-115 (1987-01-01)
Chromate dermatitis and sodium dithionite.
L M Wall
Contact dermatitis, 8(5), 291-293 (1982-09-01)

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