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Mono Potassium Phosphate

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Chemical Name: Mono potassium phosphate, MKP
Other Chemical Name: Buffer concentrate ii from potassium dihydrogen phosphate; Dipotassium hydrogen phosphate; Kalii dihydrogenophosphas; Mkp; Monobasic potassium phosphate; Mono-potassium; Monopotassium phosphate; Phosphate, analytical standard; Phosphate high; Phosphate ion chromatography standard; Phosphate low no 1; Phosphate low no 2; Phosphate single component standard; Phosphate standard solution; Potassium acid phosphate; Potassium biphosphate; Potassium dihydrogen orthophosphate; Potassium dihydrogen phosphate; Potassium dihydrogen phosphate concentrate ii; Potassium dihydrogen phosphate (monobasic); Monobasic Potassium Phosphate (AS); Potassium dihydrogen phosphate; Monopotassium phosphate.
Molecular Formula: KH2PO4
Molecular Weight: 136.09
CAS No.: 7778-77-0
EINECS No.: 231-913-4
Properties
White crystals with hygroscopy.
Stable in the air, non-combustible. Becomes transparent liquid after heated to 400℃ and solidified into non-transparent vitrescent potassiummet aphosphate.
Melting point is 252.6℃.
Relative density is 2.238g/cm3.
Solubility in 100ml water at 90℃ is 22.6g.
The solution is acidic property, pH (1% solution) is 4.6.
Insoluble in ethanol.

Items

Specifications
Appearance

White crystals
Assay

99.0% min
P2O5

51.5% min
K2O

34.0% min
Moisture

0.2% max
pH(of 1% solution)

4.4-4.8
Insoluble matters in water

0.1% max

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