Potassio nitrato, per analisi, ExpertQ®, ACS, ISO, Reag. Ph Eur

- Synonyms: Nitric acid potassium salt, Saltpeter
- KNO3
- M = 101,11 g/mol
- CAS [7757-79-1]
- EINECS-No.: 231-818-8
- Solub. in water: (20 ºC): 320 g/l
- Melting point: 334 ºC
- LD 50 (oral, rat): 3750 mg/kg
- ADR: 5.1 O2 III UN 1486
- IMDG: 5.1 III UN 1486
- IATA/ICAO: 5.1 III UN 1486
- GHS-signal word: Danger
- GHS-H sentences: H272
- GHS-P sentences: P221 - P210 - P220 - P280 - P370+P378 - P501a
- Tariff number: 2834 21 00 00
- Applications: analytical chemistry, laboratory reagent, oxidizing agent, in pyrotechnics, manufacture of glass, in food industry.

SPECIFICATIONS
assay (acidimetric, referred to dried sample): 99,0 - 101,0 %
assay (acidimetric): min 99 %
appearance of solution: clear and colourless
insoluble in water: max. 0,005 %
acidity or alkalinity: passes test
pH (5 %, H2O): 5 - 8
chlorides (Cl): max. 0,001 %
iodates (IO3): max. 0,0005 %
nitrites (NO2): max. 0,001 %
phosphates (as PO4): max. 0,0005 %
sulfates (SO4): max. 0,003 %
ammonium (NH4): max. 0,001 %
calcium (Ca): max. 0,001 %
copper (Cu): max. 0,0001 %
heavy metals: max. 0,0005 %
iron (Fe): max. 0,0003 %
lead (Pb): max. 0,0001 %
magnesium (Mg): max. 0,002 %
sodium (Na): max. 0,005 %
reducible substances: passes test
identity (IR-spectrum): passes test