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Zinc oxide, for analysis, ExpertQ®, ACS, Reag. Ph Eur

- ZnO
- M = 81,37 g/mol
- CAS [1314-13-2]
- EINECS-No.: 215-222-5
- Solub. in water: (20 ºC): insoluble
- Melting point: ~ 1970 ºC
- LD 50 (oral, rat): > 5000 mg/kg
- ADR: 9 M7 III UN 3077
- IMDG: 9 III UN 3077
- IATA/ICAO: 9 III UN 3077
- GHS-signal word: Warning
- GHS-H sentences: H400 - H410
- GHS-P sentences: P273 - P391 - P501a
- Tariff number: 2817 00 00 00
- Applications: analytical chemistry, laboratory reagent, reference material, in the pharmaceutics industry, in food industry, cosmetics.

SPECIFICATIONS
assay (complexometric): min. 99,0 %
assay (complexometric, on ignited sample): 99,0 - 100,5 %
Identification A: passes test
Identification B: passes test
insoluble in diluted H2SO4: max. 0,01 %
carbonates and substances insoluble in acids: passes test
alkalinity: passes test
chlorides (Cl): max. 10 ppm
nitrates (NO3): max. 30 ppm
sulphur compounds (as SO4): max. 100 ppm:
arsenic (As): max. 5 ppm
cadmium (Cd): max. 10 ppm
calcium (Ca): max. 50 ppm
iron (Fe): max. 10 ppm
lead (Pb): max. 50 ppm
magnesium (Mg): max. 50 ppm
manganese (Mn): max. 5 ppm
potassium (K): max. 100 ppm:
sodium (Na): max. 500 ppm
loss on ignition (500 °C): max. 1,0 %