... /PG PROPERTY: It is flammable yellow liquid, melting point of -9.5° C, boiling point of 221.7 ° C, relative density of 1 ... .163, refractive index of 1.5474,flash point of 106.Do ... 0.2% max 0.06% Low-boiling residues 0.10% max 0.03% High-boiling residues 0.10% max 0.00% Moisture ...