60235

Potassium disulfate

puriss. p.a., ≥97.5% (T)

• Synonym(s): Potassium pyrosulfate
• Empirical Formula (Hill Notation): K₂S₂O₇
• CAS Number: 7790-62-7
• Molecular Weight: 254.32
• NACRES: NA.21
• PubChem Substance ID: 329758835
• UNSPSC Code: 12352302
• EC Number: 232-216-8
• MDL number: MFCD00011385
• Assay: ≥97.5% (T)
• Form: powder or crystals

Properties

• grade: puriss. p.a.
• Quality Segment: 200
• 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 (PO₄^3-): ≤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 Information

• pictograms: GHS06,GHS05
• signalword: Danger
• hcodes: H314,H331
• pcodes: P260 - P271 - P280 - P303 + P361 + P353 - P304 + P340 + P310 - P305 + P351 + P338
• Hazard Classifications: Acute Tox. 3 Inhalation - Eye Dam. 1 - Skin Corr. 1A
• Storage Class: 6.1B - Non-combustible acute toxic Cat. 1 and 2 / very toxic hazardous materials
• wgk: WGK 3