1,2-Benzenediamine
- Formula: C6H8N2
- Molecular weight: 108.1411
- IUPAC Standard InChIKey: GEYOCULIXLDCMW-UHFFFAOYSA-N
- 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
- Permanent link for this species. Use this link for bookmarking this species for future reference.
- Information on this page:
- Other data available:
- Options:
Data at NIST subscription sites:
NIST subscription sites provide data under the NIST Standard Reference Data Program, but require an annual fee to access. The purpose of the fee is to recover costs associated with the development of data collections included in such sites. Your institution may already be a subscriber. Follow the links above to find out more about the data in these sites and their terms of usage.
Phase change data
Go To: Top, References, Notes
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
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
Tboil | 530.2 | K | N/A | Weast and Grasselli, 1989 | BS |
Tboil | 460.2 | K | N/A | Richards and Mathews, 1908 | Uncertainty assigned by TRC = 1. K; TRC |
Tboil | 530.15 | K | N/A | Perkin, 1896 | Uncertainty assigned by TRC = 2. K; TRC |
Quantity | Value | Units | Method | Reference | Comment |
Tfus | 373.9 | K | N/A | Bret-Dibat and Lichanot, 1989 | Crystal phase 1 phase; Uncertainty assigned by TRC = 0.5 K; TRC |
Tfus | 377. | K | N/A | Kemula, Buchowski, et al., 1968 | Uncertainty assigned by TRC = 0.2 K; TRC |
Quantity | Value | Units | Method | Reference | Comment |
ΔsubH° | 20.4 ± 0.07 | kcal/mol | C | Sabbah and Perez, 1997 | AC |
Enthalpy of fusion
ΔfusH (kcal/mol) | Temperature (K) | Reference | Comment |
---|---|---|---|
5.5210 | 373.85 | Bret-Dibat and Lichanot, 1989, 2 | DH |
5.52 | 373.9 | Lee, Chang, et al., 1997 | See also Bret-Dibat and Lichanot, 1989, 2.; AC |
Entropy of fusion
ΔfusS (cal/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
15. | 373.85 | Bret-Dibat and Lichanot, 1989, 2 | DH |
References
Go To: Top, Phase change data, Notes
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
Go To: Top, Phase change data, References
- 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
- The National Institute of Standards and Technology (NIST) uses its best efforts to deliver a high quality copy of the Database and to verify that the data contained therein have been selected on the basis of sound scientific judgment. However, NIST makes no warranties to that effect, and NIST shall not be liable for any damage that may result from errors or omissions in the Database.
- Customer support for NIST Standard Reference Data products.