Appearance: white to off-white powder or particle
Odor: no special odor
Active matter ≥95%
Acid value（mgKOH/g）: 120~160
Water ≤5%
PH（25℃，5% water solution）: 5.0~6.0
NaCl: ≤1%
Heavy metal ≤10ppm
As ≤2ppm
