Potassium dihydrogen phosphate, HPLC grade, Potassium biphosphate, Potassium phosphate monobasic, Primary potassium phosphate, Mono-potassium phosphate
Characteristic
Volume : x 250 g
- Synonyms: Potassium biphosphate, Potassium phosphate monobasic, Primary potassium phosphate, Mono-potassium phosphate
- KH2PO4
- M = 136,09 g/mol
- CAS [7778-77-0]
- EINECS-No.: 231-913-4
- Solub. in water: (20 ºC): 222 g/l
- Melting point: ~ 253 ºC (decomposes)
- Tariff number: 2835 24 00 00
- Applications: analytical chemistry; in buffer solutions.
SPECIFICATIONS
assay (acidimetric): min. 99,5 %
identity (IR-spectrum): passes test
insoluble matter: passes test
pH (5 %, H2O): 4,2 - 4,5
chlorides (Cl): max. 0,0005 %
iron (Fe): max. 5 ppm
heavy metals (as Pb): max. 5 ppm
wavelength:: absorbance:
210 nm: 0,1 AU
220 nm: 0,06 AU
230 nm: 0,04 AU
300 nm: 0,02 AU
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