POTASSIUM PYROSULPHATE Extra Pure

Chemical Information
Article No.	AL3776
Grade	Extra Pure
Purity	97%
CAS Number	7790-62-7
Molecular Formula	K2S2O7
Molecular Weight	254.33
HS Code	28332990
Shelf Life	5 Years

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

Safety Information and Hazard Symbols
Precaution Statement	P280-P305 + P351 + P338-P310
Hazardous Statement	H314
Symbol	GHS05
Signal Word	Danger
Packing Group	II

Specifications
Assay (acidimetric)	Min 97%
Iron (Fe)	Max 0.002%
Lead (Pb)	Max 0.001%
Chloride (Cl)	Max 0.003%
Appearance	Off-white flakes/crystals