... or Hazel Conforms Identification Infrared absorption spectrumConformsSpecific rotation[α]D20+20.7° ~ +21.5°+20.8°State of solution, %≥98. ... %19.12-19.5119.18Ammonium salt (NH4), %≤0.02Conforms Sulfate (SO4), %≤0.020ConformsIron (Fe), ppm≤107Heavy metals (Pb), ppm≤107Arsenic ... ConformsLoss on drying, %≤0.400.23Residue on ignition, (sulfated)%≤0.100.05Assay 99.0% ~ 100.5%99.5%pH5.0 ~ 6.05.7Conclusion: ...