... flake, column, fine granular, powder. Properties:It's bitter, odorless, boiling point is 204°C(15mmHG),soluble in alcohol, benzene, toluene, chloroform ... .Guide nameGuidePurity≥99.8%Chroma≤NO.40Moisture≤0.04%Melting point≥97°CAsh content:≤0.03%PH value5-6It's mainly ...