Test

Requirement

Result

Apprearance

White crystalline,granular powder or granules

Conform

Identification

Conform

Conform

Taster and Odor

Characteristically sweet with no abnormal odor

conform

Assay content

99.0~101.0%

99.79%

Clarity and Color of Solution

The solution is clear and colorless

conform

Loss on drying

≤1.0%

0.18%

Potassium

17.0-21.0%

18.8

Organic Impurities

≤20ppm

<20ppm

Acidity

conform

conform

Fluoride

≤3ppm

0.3

Heavy metals

≤5ppm

<5ppm

Acetylacetamide

conform

conform

Sulfate

≤20ppm

≤20ppm

Lead

≤1ppm

None(Detection Limit: 0.005mg/kg)

Mercury

≤1ppm

None

PH(1 in 100 solution)

5.5~7.5

6.7

Insolubles

≤75 ppm

66

Evaluation of Insolubles

No excessive physical matter and no obnoxious or detrimental matter

conform