ITEM

SPECIFICATION

RESULTS

Appearance

White powder or granular

Conforms

Assay (C₆H₇O₂K)

99.0% – 101.0%

100.17%

Acidity or alkalinity (as C₆H₈O₂ or K₂CO₃)

≤1.0%

Conform

Heavy metals (as Pb)

≤10 ppm

conform

Arsenic (as As)

≤2 ppm

conform

Loss on drying (105°C 3 hours)

≤1.0%

0.18%

Aldehydes (as HCHO)

≤0.1%

0.005%

Melting point

133-135°C 

133-134.5°C 

Lead

≤2 ppm

conform

Clarify

conform

conform

Result

Conform with the standard of FCCIV/E202