Item

Indexes

Results

Potassium bicarbonate, %

≥99.0

99.4

Potassium (K), %

≥38.0

38.4

Water-insoluble substance, %

≤0.01

0.007

Sulfate (K2SO4), %

≤0.04

0.007

Heavy metal, % (Pb)

≤20ppm

10ppm

Arsenic (As), %

≤10ppm

2ppm

Ferric oxide (Fe2O3), %

≤10ppm

7ppm

Moisture, %

≤0.5

0.25

Chloride (KCL), %

≤0.02

0.008

PH value (100g/l solution)

8-9

8.3