Potassium chloride, secondary standard for volumetric titrations, 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.
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PO02070100 |
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