Potassio diidrogenofosfato, per analisi, ExpertQ®, ACS, ISO, Reag. Ph Eur
- 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, on dried sample): min. 99,5 %
assay (acidimetric, referred to dried sample): 98,0 - 100,5 %
assay (acidimetric): min. 99,0 %
identity (IR-spectrum): passes test
appearance of solution (10 %, H2O): clear and colourless
insoluble in water: max. 0,01 %
pH (5 %, H2O): 4,2 - 4,5
chlorides (Cl): max. 5 ppm
sulfates (SO4): max. 0,003 %
total nitrogen (as N): max. 0,001 %
arsenic (As): max. 2 ppm
heavy metals: max 0,001 %
iron (Fe): max. 10 ppm
sodium (Na): max. 0,005 %
reducing substances: passes test
loss on drying (105 °C, 2 h): max. 0,2 %
loss on drying (110 ºC): max. 0,2 %
loss on drying (130 ºC): max. 2,0 %
| Codice | Volume | ||
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PO0260005P | x 5 kg |
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PO02600250 | x 250 g |
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PO0260025P | x 25 kg |
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PO02600500 | x 500 g |
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PO02601000 | x 1 kg |
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