Monobasic potassium phosphate Cell culture 250GM Go Back


: 7778-77-0

Molecular Formula

: KH2PO4

Molecular Weight

: 136.09
Description: Colorless or white crystals , granular or crystalline powder. The PH of the solution (1 in 100) is about 4.5
Aqueous solubility: Freely soluble in water, practically insoluble in ethanol (96%) and alcohol
Assay (Alkalimetric): 98.0% - 100.5%
Identification (By chemical test): Solution should faintly acid
Identification (Phosphate 1): A yellow color should develops
Identification (Phosphate 2): With silver nitrate solution neutral solution should yield yellow precipitate that soluble in 2N nitric acid and 6 N ammonium hydroxide
Identification (Phosphate 3): With ammonium molybdate solution, acidified solutions should yield a yellow precipitate that should soluble in 6N ammonium hydroxide
Identification (Potassium A): A yellow or orange yellow precipitate should formed immediately
Identification (Potassium B): White crystalline precipitate should form
Appearance of solution: Clear and colourless solution
Insoluble Substances: NMT 0.2%
pH (5% aq soln): 4.2 - 4.5
Carbonate: No effervescence should produce
Condensed phosphate: No opalescence should produce
Chloride (Cl): NMT 0.009%
Fluoride(F): NMT 0.001%
Sulfate (SO4): NMT 0.017%
Heavy metals (as Pb): NMT 0.001%
Aluminium (Al): NMT 0.0005%
Arsenic (As): NMT 0.0001%
Iron (Fe): NMT 0.001%
Sodium (Na): NMT 0.1%
Lead (Pb): NMT 0.0004%
Antimony(Sb): NMT 0.0009%
Loss on drying at 105°C: NMT 0.5%
Loss on drying at 130°C: NMT 1.0%
Reducing substances: The colour of the permanganate should not be completely discharge
Bacterial endotoxins: NMT 2.5IU/gm
Total aerobic microbial count: NMT 100CFU/gm
Total Yeast and mold count: NMT 100CFU/gm
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