Boron trioxide (data page)

This page provides supplementary chemical data on boron trioxide.

Material Safety Data Sheet

MSDS from SIRI

Structure and properties

Structure and properties Index of refraction, nD ? Abbe number ? Dielectric constant, εr ? ε0 at ? °C Bond strength ? Bond length ? Bond angle ? Magnetic susceptibility ?

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 -1273.5 kJ/mol Standard molar entropy,Sosolid 54.0 J/(mol K) Heat capacity, cp 62.8 J/(mol K) Liquid properties Std enthalpy changeof formation, ΔfHoliquid ? kJ/mol Standard molar entropy,Soliquid ? J/(mol K) Heat capacity, cp ? J/(mol K) Gas properties Std enthalpy changeof formation, ΔfHogas -843.8 kJ/mol Standard molar entropy,Sogas 242.5 J/(mol K) Heat capacity, cp 57.3 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  

References