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POTASSIUM PYROSULPHATE Extra Pure

"Store at 15–25°C"
Potassium disulphate

COAs

Packings

500 g (00500)

1PW1200500
Print friendly version
Article No. 05439 Grade Extra Pure
Purity 97% CAS No. 7790-62-7
Molecular Formula K2S2O7 Molecular Weight 254.33
H.S. Code 2833.2990 Shelf Life 60 Months

Physical Properties

Physical state at 20 °C Solid Colour Off white flakes
Odour Odorless pH value 1 - 2 at 25.5 g/l at 25 °C
Melting point/ Freezing point [°C] 325 °C Density [g/cm3] 2.28
Solubility in water [% weight] 25.4 g/l at 20 °C

Specifications

Appearance White to almost white Powder or flakes or crystals and/or chunks Assay (acidimetric) Min 97%
Chloride (Cl) Max 0.003% Iron (Fe) Max 0.002%
Lead (Pb) Max 0.001%

Safety Information and Hazard Symbols

Skull and Crossbones Corrosion
Symbol: GHS06,GHS05
 Signal Word: Danger
 UN No.: 2923
 IMCO Class No.: 8, 6.1
 Packing Group: I
 Hazardous Statement: H314,H331
 Precaution Statement: P260 - P271 - P280 - P303 + P361 + P353 - P304 + P340 + P310 - P305 + P351 + P338
Revision Date: 16-Apr-2026

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