2. coa of this product
testing item standards results
characters white or similar white crystalline powder confirmed
melting point 204℃-206℃ 205.0℃-206.0℃
identification 1 chemical test positive
2 chemical test positive
3 comply with the spectrum of reference(568) confirmed
acidity ≤0.2ml <0.2ml
clarity of solution clear confirmed
chloride ≤0.014% <0.014%
loss on drying ≤0.5% 0.3%
residue on ignition ≤0.1% 0.03%
heavy metals(pb) ≤20ppm <20ppm
content ≥99.0% 99.5%