Synonym(s): 1-Benzopyran-2-one Formula: C9H6O2 Formula weight: 146.15 Purity: 98% CAS Number: 91-64-5 UN Number: UN2811 Hazard Class: 6.1 Packing Group: III Harmonized Tariff Code:  2932.20 Hazard Statements: H301-H351 Toxic if swallowed. Suspected of causing cancer. …

CAS No.: 91-64-5 UN No.: UN2811 Solubility: 1.7 g/l (20°C) Melting Point: 68 - 71°C Molar Mass: 146.14 g/mol Boiling Point: 298 - 302°C Vapor Pressure: 1.3 hPa (106°C) Flash Point: 162°C Refractive Index: 162°C Density: 0.935 g/cm3