Pirosiarczyn potasowy, Pharmpur ekstra czysty, USP, NF, Ph Eur – SCHARLAU
Available on backorder
Additional information
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POBIERZ KARTĘ PRODUKTU
POBIERZ KARTĘ POZIOMU JAKOŚCI
POBIERZ KARTĘ CHARAKTERYSTYKI PRODUKTU
PRODUCENT: SCHARLAB
Potassium disulfite, extra pure,
– Synonyms: Potassium metabisulfite, Potassium pyrosulfite
– K2S2O5
– M = 222,33 g/mol
– CAS [16731-55-8]
– EINECS-No.: 240-795-3
– Solub. in water: (20 ºC): 450 g/l
– Melting point: 190 ºC
– LD 50 (oral, rat): 2300 mg/kg
– GHS-signal word: Danger
– GHS-H sentences: H318 – H335 – EUH031
– GHS-P sentences: P261 – P280 – P305+P351+P338 – P304+P340 – P405 – P501a
– Tariff number: 2832 20 00 00
– Applications: analytical chemistry, laboratory reagent, inorganic salts, preservative agent (in food industry).
SPECIFICATIONS
assay (iodometric): 95,0 – 101,0 %
assay (iodometric, as SO2): 51,8 – 57,6 %
identification: passes test
appearance of solution: clear and colourless
pH (5 %, H2O): 3,0 – 4,5
thiosulfates (S2O3): passes test
iron (Fe): max. 10 ppm
selenium (Se): max. 10 ppm
zinc (Zn): max. 25 ppm
