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Potassium Dihydrogen Phosphate 99.5% AR Grade Reagent

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

Quantity:
  • AR
  • LABOR
  • 218302129

Potassium Dihydrogen Phosphate 99.5% AR 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






Item of Analysis

Standard

Assay,%

99.5 min

pH(50g/L,25℃)

4.2~4.5

Transparency of solution

2 max

Insoluble in water,%

0.002 max

Loss on drying,%

0.2 max

Chloride(Cl),%

0.001 max

Sulfate(SO4),%

0.003 max

Nitrogen compounds(N),%

0.001 max

Arsenic(As),%

0.0005 max

Sodium(Na),%  

0.02 max

Iron(Fe),%

0.001 max

Heavy metals(as Pb),%

0.001 max


Not a hazardous substance or mixture.


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