... : itemsindexAppearanceWhite needle-shape crystalloidsPurity≥99.8%Chroma≤40Moisture≤0.04%Melting point≥97°CAsh content≤0.03%PH value5.0-6.0Properties ... and Usage:BTA is bitter, odorless, boiling point is 204°C (15mmHg),soluble in alcohol, benzene,toluene,chloroform ...