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POTASSIUM METABISULPHITE Extra Pure

HomeLaboratory ChemicalsInorganic Salts
SYNONYMS :  POTASSIUM PYROSULFITE; DIPOTASSIUM DISULFITE
 
Article No. 05394
Grade Extra Pure
Purity 95%
CAS No. 16731-55-8
Molecular Formula K2S2O5
Molecular Weight 222.31
H.S. Code 2832.2000
Shelf Life 5 Years

 
Specifications
Appearance White crystalline powder
Assay (iodometric)
95 - 99.9%
Iodometric,SO2 54.8 - 57.6%
Appearance of solution
Passes test
pH (5% in water) 3 - 4.5
Chloride (Cl)
Max 0.05%
Heavy metals (as Pb) Max 0.001%
Thiosulphate Passes test
Copper (Cu)
 Max 0.0025%
Zinc (Zn) Max 0.0025%
Iron (Fe) Max 0.002%
Selenium (Se) Max 0.0005%
Arsenic (As)
 Max 0.0002%
Mercury (Hg) Max 0.0001%
Packings
00500    500 g
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500ml
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05000    5000 g
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0025K    25 Kg
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0050K    50 Kg
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500ml
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SS
 
Safety Information and Hazard Symbols
Symbol: GHS07
Signal Word: Warning
Hazardous Statement: H315-H319-H335
Precaution Statement: P261-P305 + P351 + P338
 
Revision Date : 13-Dec-2013
 
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