Potassium hydrogen phthalate 99.95-100.05% (dry basis), crystals, BAKER ANALYZED® ACS, J.T.Baker®
Supplier: Avantor
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2958-00EA
131
GBP
2958-00
2958-07
2958-01
Potassium hydrogen phthalate 99.95-100.05% (dry basis), crystals, BAKER ANALYZED® ACS, J.T.Baker®
Potassium hydrogen phthalate
This reagent is satisfactory for use as a pH standard. For use as an acidimetric standard, this material should be lightly crushed and dried for 2 hours at 120 °C to remove any absorbed moisture.
Formula:
HOOCC₆H₄COOK Melting Pt: 295…300 °C Density: 1.6362 g/cm³ (20 °C) Storage Temperature: Ambient |
MDL Number:
MFCD00013070 CAS Number: 877-24-7 EINECS: 212-889-4 Merck Index: 13,07694 |
Specification Test Results
Meets ACS Reagent Chemical Requirements | 99.95 - 100.05% |
For Laboratory,Research,or Manufacturing Use | ≤0.005% |
Assay (1-KOCOC₆H₄-2-COOH) (dried basis) | 99.95 - 100.05 % |
Insoluble Matter | ≤0.005 % |
pH of 0.05M Solution at 25°C | 4.00 - 4.02 |
Chlorinated Compounds (as Cl) | ≤0.003 % |
Sulfur Compounds (as S) | ≤0.002 % |
Sodium (Na) | ≤0.005 % |
Trace Impurities - ACS - Heavy Metals (as Pb) | ≤5 ppm |
Trace Impurities - Iron (Fe) | ≤5 ppm |
This reagent is satisfactory for use as a pH standard. For use as | |
anacidimetric standard, this material should be lightly crushed and dried for2 hours at 120° C to remove any absorbed moisture. | |
Meets Reagent Specifications for testing USP/NF monographs |
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