1,2-Benzenediamine

• Formula: C₆H₈N₂
• Molecular weight: 108.1411
• IUPAC Standard InChI: InChI=1S/C6H8N2/c7-5-3-1-2-4-6(5)8/h1-4H,7-8H2 Copy

  
• IUPAC Standard InChIKey: GEYOCULIXLDCMW-UHFFFAOYSA-N Copy
• CAS Registry Number: 95-54-5
• Chemical structure:
  This structure is also available as a 2d Mol file or as a computed 3d SD file
  The 3d structure may be viewed using Java or Javascript.
• Other names: o-Phenylenediamine; o-Benzenediamine; o-Diaminobenzene; C.I. Oxidation Base 16; C.I. 76010; Orthamine; 1,2-Diaminobenzene; 1,2-Phenylenediamine; 2-Aminoaniline; o-Aminoaniline; EK 1700; OPDA; PODA; SQ 15500; o-Fenylendiamin; 1,2-Fenylendiamin; NSC 5354; IK 3
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• Information on this page:
  • Phase change data
  • References
  • Notes
• Other data available:
  • Condensed phase thermochemistry data
  • Gas phase ion energetics data
  • IR Spectrum
  • Mass spectrum (electron ionization)
  • UV/Visible spectrum
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Phase change data

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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Data compiled as indicated in comments:
BS - Robert L. Brown and Stephen E. Stein
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny director
AC - William E. Acree, Jr., James S. Chickos
DH - Eugene S. Domalski and Elizabeth D. Hearing

Enthalpy of fusion

Entropy of fusion

References

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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Weast and Grasselli, 1989
CRC Handbook of Data on Organic Compounds, 2nd Editon, Weast,R.C and Grasselli, J.G., ed(s)., CRC Press, Inc., Boca Raton, FL, 1989, 1. [all data]

Richards and Mathews, 1908
Richards, T.W.; Mathews, J.H., The Relation Between Compressibility, Surface Tension, and Other Properties of Material, J. Am. Chem. Soc., 1908, 30, 8-13. [all data]

Perkin, 1896
Perkin, W.H., LXIX. On Magnetic Rotatory Power, especially of Aromatic Compounds, J. Chem. Soc., 1896, 69, 1025-1257. [all data]

Bret-Dibat and Lichanot, 1989
Bret-Dibat, P.; Lichanot, A., Proprietes thermodynamiques des isomeres de position de benzenes disubstitues en phase condensee, Thermochim. Acta, 1989, 147, 2, 261, https://doi.org/10.1016/0040-6031(89)85181-0 . [all data]

Kemula, Buchowski, et al., 1968
Kemula, W.; Buchowski, H.; Pawlowski, W., Effect of the position of substituents in an aromatic ring on R(f) and partition coefficients: II. aromatic amines, Rocz. Chem., 1968, 42, 1951. [all data]

Sabbah and Perez, 1997
Sabbah, Raphaël; Perez, Laurence, Energétique des liaisons inter- et intramoléculaires dans les trois isomères du benzènediamine, Can. J. Chem., 1997, 75, 4, 357-364, https://doi.org/10.1139/v97-041 . [all data]

Bret-Dibat and Lichanot, 1989, 2
Bret-Dibat, P.; Lichanot, A., Thermodynamic properties of positional isomers of disubstituted benzene in condensed phase, Thermochim. Acta, 1989, 147(2), 261-271. [all data]

Lee, Chang, et al., 1997
Lee, Ming-Jer; Chang, Yao-Kun; Lin, Ho-mu; Chen, Chang-Hsin, Solid-Liquid Equilibria for 4-Methoxyphenol with Catechol, Ethylenediamine, or Piperazine, J. Chem. Eng. Data, 1997, 42, 2, 349-352, https://doi.org/10.1021/je960201b . [all data]

Notes

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• Symbols used in this document:
  

  Tboil	Boiling point
  Tfus	Fusion (melting) point
  ΔfusH	Enthalpy of fusion
  ΔfusS	Entropy of fusion
  ΔsubH°	Enthalpy of sublimation at standard conditions

• Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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