Specification Test Results

• Appearance:
  Yellow Powder
• Infrared spectrum:
  Conforms
• Assay:
  94.5 to 102.0 % (Sum of the contents of chlortetracycline hydrochloride and tetracycline hydrochloride, on dry substance)
• Water:
  ≤2.0 %
• Sulfated ash:
  ≤0.5 %
• Identification:
  Passes test
• pH:
  2.3 to 3.3 (1 % in water CO2 free)
• Specific optical rotation:
  -235° to -250° (20°C, 589 nm) (c=0.25, water) (on dry substance)
• Absorbance:
  ≤0.40 (460 nm)
• Heavy metals (as Pb):
  ≤50 ppm