ITEM

STANDARD                                                              

DEFINITION

COMPLIES WITH THE TEST

CHARACTERS

A WHITE, CRYSTALLINE POWDER, COLORLESS CRYSTALS OR GRANULES

IDENTIFICATION

COMPLIES WITH THE TEST

ASSAY

99.5%~101.5%

LOSS ON DRYING

≤0.5%

READILY CARBONISABLE SUBSTANCES

PASS THE TEST

SULFATE ASH

≤0.1%

IRON

≤50PPM

CHLORIDE

≤50PPM

OXALATE

≤300PPM

SULPHATE

≤150PPM

HEAVY METALS

≤10PPM

ARSENIC

≤4PPM

CALCIUM

≤200PPM

BARIUM

PASS THE TEST

TRIDODECYLAMINE

≤0.1PPM