Siarczan cynkowy, heptahydrat ExpertQ® do analizy ACS,ISO,Reag. Ph Eur – Scharlau

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PRODUCENT: SCHARLAB

Zinc sulfate heptahydrate, ExpertQ®, ACS

– Synonyms: Sulfuric acid zinc salt heptahydrate, Zinc vitriol
– ZnSO4·7H2O
– M = 287,54 g/mol
– CAS [7446-20-0]
– EINECS-No.: 231-793-3
– Solub. in water: (20 ºC): 960 g/l
– Melting point: ~ 40 º C (decomposes)
– LD 50 (oral, rat): 2150 mg/kg
– EC-Index-No.: 030-006-00-9
– ADR: 9 M7 III UN 3077
– IMDG: 9 III UN 3077
– IATA/ICAO: 9 III UN 3077
– GHS-signal word: Danger
– GHS-H sentences: H318 – H400 – H410 – H302
– GHS-P sentences: P280 – P273 – P264 – P270 – P305+P351+P338 – P501a
– Tariff number: 2833 29 20 00
– Applications: analytical chemistry, laboratory reagent, in galvanotechnia, for deproteinating blood and urine.

SPECIFICATIONS
assay (complexometric): 99,5 – 103,0 %
identity (IR-spectrum): passes test
appearance of solution: clear and colourless
insoluble in water: max. 0,01 %
pH (5 %, H2O): 4,4 – 5,6
chlorides (Cl): max. 5 ppm
nitrates (NO3): max. 0,002 %
total nitrogen (as N): max. 0,001 %
ammonium (NH4): max. 0,001 %
arsenic (As): max. 0,5 ppm
cadmium (Cd): max. 5 ppm
calcium (Ca): max. 0,001 %
copper (Cu): max. 5 ppm
iron (Fe): max. 5 ppm
lead (Pb): max. 0,001 %
magnesium (Mg): max. 0,001 %
manganese (Mn): max. 3 ppm
potassium (K): max. 0,001 %
sodium (Na): max. 0,001 %