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Potassium Dihydrogen Phosphate 99.7% GR Grade Reagent

Cas Number:7778-77-0
Formula: KH2PO4
Molar Mass:136.09
EC Number:231-913-4

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Model:
GR
Brand:
LABOR
Code:
218301229

Potassium Dihydrogen Phosphate 99.7% GR Grade Reagent

Cas Number:7778-77-0

Formula: KH₂PO₄

Molar Mass:136.09

EC Number:231-913-4

Physicochemical properties:

Colorless crystal or white granular powder. It is stable in air and will lose water at 400 ° C and turn into metaphosphate. It is soluble in about 4.5 parts of water, insoluble in ethanol. The pH is 4.4 ~ 4.7. The relative density is 2.34. The melting point is 252.6 ° C.

Usage:

Making buffer. Determination of arsenic, antimony, phosphorus, aluminum and iron. Make phosphorus standard solution and medium. The activity of inorganic phosphorus and alkaline phosphatase in serum is measured.

Packing:

500g/25kg

Potassium Dihydrogen Phosphate 99.7% Potassium Dihydrogen Orthophosphate; Potassium Phosphate GR Grade Reagent

Item of Analysis	Standard
Assay,%	99.7 min
pH(50g/L,25℃)	4.2~4.5
Transparency of solution	2 max
Insoluble in water,%	0.001 max
Loss on drying,%	0.1 max
Chloride(Cl),%	0.0005 max
Sulfate(SO₄),%	0.002 max
Nitrogen compounds(N),%	0.0003 max
Arsenic(As),%	0.0003 max
Sodium(Na),%	0.01 max
Iron(Fe),%	0.0005 max
Heavy metals(as Pb),%	0.0005 max

Item of Analysis	Standard
Assay,%	99.7 min
pH(50g/L,25℃)	4.2~4.5
Transparency of solution	2 max
Insoluble in water,%	0.001 max
Loss on drying,%	0.1 max
Chloride(Cl),%	0.0005 max
Sulfate(SO₄),%	0.002 max
Nitrogen compounds(N),%	0.0003 max
Arsenic(As),%	0.0003 max
Sodium(Na),%	0.01 max
Iron(Fe),%	0.0005 max
Heavy metals(as Pb),%	0.0005 max

Potassium Dihydrogen Phosphate 99.7% GR Grade Reagent

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