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60235 Sigma-Aldrich

Potassium disulfate

puriss. p.a., ≥97.5% (T)

Synonym: Potassium pyrosulfate

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Properties

Related Categories Analytical Reagents, Analytical Reagents for General Use, Analytical/Chromatography, Essential Chemicals, O-P, Puriss p.a.,
Quality Level   200
grade   puriss. p.a.
assay   ≥97.5% (T)
form   powder or crystals
impurities   ≤0.002% total nitrogen (N)
pH   1-2 (25 °C, 25.5 g/L)
density   2.28 g/mL at 25 °C (lit.)
anion traces   chloride (Cl-): ≤5 mg/kg
  phosphate (PO43-): ≤10 mg/kg
cation traces   Ag: ≤5 mg/kg
  Al: ≤5 mg/kg
  As: ≤5 mg/kg
  Ba: ≤5 mg/kg
  Bi: ≤5 mg/kg
  Ca: ≤10 mg/kg
  Cd: ≤5 mg/kg
  Co: ≤5 mg/kg
  Cr: ≤5 mg/kg
  Cu: ≤5 mg/kg
  Fe: ≤5 mg/kg
  Li: ≤5 mg/kg
  Mg: ≤5 mg/kg
  Mn: ≤5 mg/kg
  Mo: ≤5 mg/kg
  Na: ≤50 mg/kg
  Ni: ≤5 mg/kg
  Pb: ≤5 mg/kg
  Sr: ≤5 mg/kg
  Tl: ≤5 mg/kg
  Zn: ≤5 mg/kg
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

Description

General description

Potassium disulfite (Potassium pyrosulfate) has been synthesized from potassium hydrogen sulfate, via melting.

Application

Potassium disulfite supported on silica may be used for the synthesis of ethyl pyruvate.

Other Notes

Reagent for the decomposition of basic metal oxides by fusion

Safety & Documentation

Safety Information

Symbol 
GHS05  GHS05
Signal word 
Danger
Hazard statements 
Precautionary statements 
RIDADR 
UN 2923 6.1(8) / PGI
WGK Germany 
WGK 3
Flash Point(F) 
Not applicable
Flash Point(C) 
Not applicable

Documents

Certificate of Analysis (COA)

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Protocols & Articles
Peer-Reviewed Papers
15

References

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