Appearance
White or off-white Crystalline Powder
Identification
Infrared Absorption
ultraviolet absorption
Melting Point
34~39℃
Specific Rotation
+77°~ +82°（C=2, in dioxane）
Water
≤0.50%
Ordinary impurities
Single Impurity ≤1.0%
Total Impurities ≤2.0%
Free Heptanoic Acid
≤0.16%
Assay
97~103%
