Organic Chemicals

Appearance: White needle crystal or powder White powder
Assay(HPLC): ≥98% 99.8%
(Melting point) 199~201卤.5℃ 199~201.5℃
Specific rotation: [a]D20=-65.00卤.00 -65.20
Clarity of water solution Trasparancy colorless.none suspended matters Pass
Loss on drying: ≤0.5% ＜0.5%
Residue on ignition: ≤0.2% 0.19%
Heavy metals: ≤20ppm ＜20ppm
（As）Arsenic: ≤2ppm ＜2ppm
PH (PH value): 5.0-7.0 6.26
Infrared characteristic peak 1512cm-11219cm-11049cm-1卤5-7)cm-1 Pass
Hydroquinone: ≤20 ppm Pass
Bacteria count ≤300cpu Pass
≤100cpu
Conclusion: The quality reaches Q/320282PAD001-2003