2-Aminopyridine
- Formula: C5H6N2
- Molecular weight: 94.1145
- IUPAC Standard InChIKey: ICSNLGPSRYBMBD-UHFFFAOYSA-N
- CAS Registry Number: 504-29-0
- 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: 2-Pyridinamine; Pyridine, 2-amino-; α-Aminopyridine; α-Pyridinamine; α-Pyridylamine; β-Pyridylamine; o-Aminopyridine; 2-Pyridylamine; Amino-2 pyridine; 1,2-Dihydro-2-iminopyridine; NSC 431
- 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
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
DRB - Donald R. Burgess, Jr.
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
Tboil | 480.2 | K | N/A | Aldrich Chemical Company Inc., 1990 | BS |
Tboil | 477. | K | N/A | Buckingham and Donaghy, 1982 | BS |
Quantity | Value | Units | Method | Reference | Comment |
Tfus | 330.6 | K | N/A | Buckingham and Donaghy, 1982 | BS |
Tfus | 329.15 | K | N/A | Waclawek and Hurwic, 1967 | Uncertainty assigned by TRC = 1.5 K; TRC |
Tfus | 331.65 | K | N/A | Cumper, Ginman, et al., 1963 | Uncertainty assigned by TRC = 0.2 K; TRC |
Quantity | Value | Units | Method | Reference | Comment |
ΔsubH° | 76.5 ± 0.4 | kJ/mol | C | Sabbah and da Silva Eusébio, 1998 | AC |
ΔsubH° | 78.7 ± 0.8 | kJ/mol | C | Bickerton, Pilcher, et al., 1984 | ALS |
ΔsubH° | 78.7 | kJ/mol | N/A | Bickerton, Pilcher, et al., 1984 | DRB |
ΔsubH° | 78.7 ± 0.8 | kJ/mol | C | Bickerton, Pilcher, et al., 1984 | AC |
Reduced pressure boiling point
Tboil (K) | Pressure (bar) | Reference | Comment |
---|---|---|---|
377. to 379. | 0.027 | Buckingham and Donaghy, 1982 | BS |
Enthalpy of fusion
ΔfusH (kJ/mol) | Temperature (K) | Reference | Comment |
---|---|---|---|
15.3 | 331.5 | Sabbah and da Silva Eusébio, 1998 | AC |
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.
Aldrich Chemical Company Inc., 1990
Aldrich Chemical Company Inc.,
Catalog Handbook of Fine Chemicals, Aldrich Chemical Company, Inc., Milwaukee WI, 1990, 1. [all data]
Buckingham and Donaghy, 1982
Buckingham, J.; Donaghy, S.M.,
Dictionary of Organic Compounds: Fifth Edition, Chapman and Hall, New York, 1982, 1. [all data]
Waclawek and Hurwic, 1967
Waclawek, Z.; Hurwic, J.,
Dipole moment and spectroscopic studies of the 1,3,5-trinitrobenzene complexes with some pyridine derivatives in nonpolar solvents,
Rocz. Chem., 1967, 41, 1993. [all data]
Cumper, Ginman, et al., 1963
Cumper, C.W.N.; Ginman, R.F.A.; Redford, D.G.; Vogel, A.I.,
Physical Properties and Chemical Constitution. Part XXXVIII. The Electric Dipole Moments of Aminopyridines and Aminoquinolines.,
J. Chem. Soc., 1963, 1963, 1731. [all data]
Sabbah and da Silva Eusébio, 1998
Sabbah, Raphaël; da Silva Eusébio, Maria Ermelinda,
Energétique des liaisons inter- et intramoléculaires dans les trois isomères de l'aminopyridine,
Revue canadienne de chimie, 1998, 76, 1, 18-24, https://doi.org/10.1139/cjc-76-1-18
. [all data]
Bickerton, Pilcher, et al., 1984
Bickerton, J.; Pilcher, G.; Al-Takhin, G.,
Enthalpies of combustion of the three aminopyridines and the three cyanopyridines,
J. Chem. Thermodyn., 1984, 16, 373-378. [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 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.