Dibasic potassium phosphate anhydrous Cell culture 250GM Go Back


: 7758-11-4

Molecular Formula

: K2HPO4

Molecular Weight

: 174.18
Description: White or almost white powder or colourless crystals, very hygroscopic
Solubility: Very soluble in water, slightly soluble in alcohol.
Assay (acidimetric): 98.0% - 100.5%
Identification (By Chemical test): Solution S should slighty alkaline
Identification (Phosphate 1): A yellow colour develops
Identification (Potassium 1): A yellow or orange-yellow precipitate is formed immediately
Appearance of solution: clear and colourless solution
Insoluble Substances: NMT 0.2%
pH (5% aq soln): 8.5 – 9.6
Carbonate: NMT a few bubbles are evolved
Chloride (Cl): NMT 0.02%
Fluoride(F): NMT 0.001%
Sulfate (SO4): NMT 0.1%
Aluminium (Al): NMT 0.0005%
Arsenic (As): NMT 0.0002%
Iron (Fe): NMT 0.001%
Sodium (Na): NMT 1.5%
Potassium dihydrogen phosphate: NMT 2.5%
Potassium dihydrogen phosphate and tri-potassium phosphate: A blue color should produced, which should change to yellow (with a greenish tinge) by the addition of NMT 0.4ml of 1 N Hydrochloric acid.
Reducing substances: The solution remains faintly pink
Loss on drying at 130°C: NMT 1.0%
Total aerobic microbial count: NMT 100CFU/gm
Total Yeast and mold count: NMT 100CFU/gm
Bacterial endotoxins: NMT 2.5IU/gm
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