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Monopotassium phosphate

Molecular formula: KH2PO4
Molecular weight: 136.09
CAS Number: 7778-77-0
Standard executed: HG2321-1992
Appearance: Potassium dihydrogen phosphate is white crystal or powder, with slight color allowed for agricultural use.
Uses: Used as high efficiency phosphorus potassium compound fertilizer, bacterial culture agent, private nutrition supplement, etc.
Packing: 25Kg, 50Kg bag; Container ton bag; Customer requirements.
Technical indicator: HG 2321-1992

Specification

Item

Indicator

Industrial grade

Agricultural grade

First grade

Qualified product

First grade

Qualified product

Potassium Phosphate Monobasic 
(as KH2PO4 in dry basis), W/% ≥

98.0

97.0

96.0

92.0

moisture, w/% ≤

2.5

3.0

4.0

5.0

PH

4.3-4.7

4.3-4.7

Water insoluble matter, w/% ≤

0.2

0.5

-

-

Chloride (Cl),w/% ≤

0.20

-

-

-

Sulfate (as SO4), w/% ≤

-

-

-

-

Ferrum (Fe),w/% ≤

0.003

-

-

-

Arsenic (As),w/% ≤

0.005

-

-

-

Heavy metal (as Pb), w/% ≤

0.005

-

-

-

Potassium oxide (K2O in dry basis), w/% ≥

33.9

33.5

33.2

31.8


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