Potassio cloruro, standard secondario per determinazioni volumetrici, Titrasure®

- Synonyms: Chloro potassium - KCl - M = 74,56 g/mol - CAS [7447-40-7] - EINECS-No.: 231-211-8 - Solub. in water: (20 ºC): 330 g/l - Melting point: 773 ºC - Boiling point: 1413 ºC - LD 50 (oral, rat): 2600 mg/kg - Tariff number: 3104 20 90 00 - Applications: analytical chemistry, laboratory reagent, photography, in buffer solutions, electrolyte for batteries. SPECIFICATIONS assay (on dried sample): 99,0 - 100,5 % insoluble in water: max. 0,005 % pH (5 %, H2O, 25 °C): 5,4 - 8,6 bromides (Br): max. 0,01 % chlorates and nitrates (as NO3): max. 0,003 % iodides (I): max. 0,002 % phosphates (as PO4): max. 0,0005 % sulfates (SO4): max. 0,001 % barium (Ba): passes test calcium (Ca): max. 0,002 % heavy metals (as Pb): max. 0,0005 % iron (Fe): max. 0,0003 % magnesium (Mg): max. 0,001 % sodium (Na): max. 0,005 % This standard solution is traceable to Standard Reference Material from NIST.