Specification Test Results

• Appearance:
  White to almost white Powder or crystals
• Infrared spectrum:
  Conforms
• Melting point:
  258 to 261 °C
• Loss on drying:
  ≤0.5 % (105 °C, 3 hrs)
• Sulfated ash:
  ≤0.5 %
• Additional info:
  limit of equilenin and equilin: passes test
• HPLC:
  ≥99.0 % (on dried substance)
• Specific optical rotation:
  +158° to +165° (20 °C, 589 nm) (c=1, dioxane)
• Clarity of solution:
  passes test
• Silicon dioxide (SiO2):
  ≤0.005 %
• Sulfur compounds (as SO4):
  ≤0.004 %
• Insoluble matter:
  ≤0.01 %