This page provides supplementary chemical data on<unk> in free base form. More commonly available "powder<unk>  is a hydrochloride salt whose properties will differ. Material Safety Data Sheet == The handling of this chemical may incur notable safety precautions. It is highly recommend that you seek the Material Safety Datasheet (MSDS) for this chemical from a reliable source such as SIRI, and follow its directions. Structure and properties == Structure and properties Index of refraction, nD 1.5022 Abbe number ? Dielectric constant, εr ? ε0 at ? °C Bond strength ? Bond length ? Bond angle ? Magnetic susceptibility ? Melting point 98 °C Boiling point 187 °C Solubility 1.7 g/L at 25 °C Thermodynamic properties == Phase behavior Triple point ? K (? °C), ? Pa Critical point ? K (? °C), ? Pa Std enthalpy changeof fusion, ΔfusHo ? kJ/mol Std entropy changeof fusion, ΔfusSo ? J/(mol·K) Std enthalpy changeof vaporization, ΔvapHo ? kJ/mol Std entropy changeof vaporization, ΔvapSo ? J/(mol·K) Solid properties Std enthalpy changeof formation, ΔfHosolid ? kJ/mol Standard molar entropy,Sosolid ? J/(mol K) Specific heat capacity, cp ? J/(mol K) Liquid properties Std enthalpy changeof formation, ΔfHoliquid ? kJ/mol Standard molar entropy,Soliquid ? J/(mol K) Specific heat capacity, cp ? J/(mol K) Gas properties Std enthalpy changeof formation, ΔfHogas ? kJ/mol Standard molar entropy,Sogas ? J/(mol K) Specific heat capacity, cp ? J/(mol K) Spectral data == UV-Vis λmax ? nm Extinction coefficient, ε ? IR Major absorption bands ? cm−1 NMR Proton NMR Carbon-13 NMR Other NMR data MS Masses of main fragments
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