Boric acid (data page)

This page provides supplementary chemical data on boric acid.

Thermodynamic properties

Phase behavior
Triple point	? K (? °C), ? Pa
Critical point	? K (? °C), ? Pa
Std enthalpy change of fusion, ΔfusHo	? kJ/mol
Std entropy change of fusion, ΔfusSo	? J/(mol·K)
Std enthalpy change of vaporization, ΔvapHo	? kJ/mol
Std entropy change of vaporization, ΔvapSo	? J/(mol·K)
Solid properties
Std enthalpy change of formation, ΔfHosolid	−1093.99 kJ/mol
Standard molar entropy, Sosolid	88.7 J/(mol K)
Heat capacity, cp	? J/(mol K)
Liquid properties
Std enthalpy change of formation, ΔfHoliquid	? kJ/mol
Standard molar entropy, Soliquid	? J/(mol K)
Heat capacity, cp	? J/(mol K)
Gas properties
Std enthalpy change of formation, ΔfHogas	−992.28 kJ/mol
Standard molar entropy, Sogas	295.23 J/(mol K)
Heat capacity, cp	? J/(mol K)

Spectral data

UV-Vis
Lambda-max	? nm
Extinction coefficient	?
IR
Major absorption bands	? cm−1
NMR
Proton NMR
Carbon-13 NMR
Other NMR data
MS
Masses of main fragments

Structure and properties data

Structure and properties
Index of refraction	?
Dielectric constant	? C2/(N·m2) at ? °C
Bond strength	?
Bond length	? 120OC
Bond angle	?
Magnetic susceptibility	?

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 and follow its directions.

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References

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• Except where noted otherwise, data relate to Standard temperature and pressure.
• Reliability of data general note.