Niacin
- Formula: C6H5NO2
- Molecular weight: 123.1094
- IUPAC Standard InChI: InChI=1S/C6H5NO2/c8-6(9)5-2-1-3-7-4-5/h1-4H,(H,8,9)
- IUPAC Standard InChIKey: PVNIIMVLHYAWGP-UHFFFAOYSA-N
- CAS Registry Number: 59-67-6
- 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: 3-Pyridinecarboxylic acid; Nicotinic acid; Akotin; Apelagrin; Daskil; Efacin; Linic; Nicacid; Nicangin; Nico-Span; Nicodelmine; Nicolar; Niconacid; Nicosan 3; Nicotinipca; Nicyl; Nyclin; Pellagrin; Pelonin; Pyridine-β-carboxylic acid; 3-Carboxylpyridine; 3-Carboxypyridine; anti-Pellagra vitamin; Acidum nicotinicum; Bionic; Davitamon PP; Diacin; Direktan; Naotin; Niac; Nicamin; Nico-400; Nicobid; Nicocap; Nicocidin; Nicocrisina; Nicodan; Nicodon; Niconat; Niconazid; Nicorol; Nicoside; Nicosyl; Nicotamin; Nicotene; Nicotil; Nicotine acid; Nicotinsaure; Nicovasan; Nicovasen; Nicovel; Nipellen; NICO; P.P. factor-pellagra preventive factor; Pellagra preventive factor; Pellagramin; Peviton; Pyridine-3-carboxylic acid; PP Factor; SK-Niacin; S115; Tega-Span; Vitaplex N; Wampocap; Acide nicotinique; Kyselina nikotinova; NAH; Pyridine-carboxylique-3; Tinic; m-Pyridinecarboxylic acid; β-Pyridinecarboxylic acid; 3-Pyridylcarboxylic acid; Niacor; P.P. factor; Vitamin B3; Niaspan; Vitamin B5
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Condensed phase thermochemistry 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 by: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔfH°solid | -344.9 ± 0.9 | kJ/mol | Ccb | Bickerton, Pilcher, et al., 1984 | Author was aware that data differs from previously reported values |
| ΔfH°solid | -344.81 ± 0.92 | kJ/mol | Ccr | Sato-Toshima, Kamagughi, et al., 1983 | Author was aware that data differs from previously reported values |
| ΔfH°solid | -344.97 ± 0.67 | kJ/mol | Ccr | Johnson, 1975 | |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔcH°solid | -2730.83 ± 0.48 | kJ/mol | Ccr | Sato-Toshima, Kamagughi, et al., 1983 | Author was aware that data differs from previously reported values |
| ΔcH°solid | -2730.67 ± 0.57 | kJ/mol | Ccr | Johnson, 1975 |
References
Go To: Top, Condensed phase thermochemistry data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
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]
Sato-Toshima, Kamagughi, et al., 1983
Sato-Toshima, T.; Kamagughi, A.; Nishiyama, K.; Sakiyama, M.; Seki, S.,
Enthalpies of combustion of organic compounds. IV. Acetaneilide and nicotinic acid,
Bull. Chem. Soc. Jpn., 1983, 56, 51-54. [all data]
Johnson, 1975
Johnson, W.H.,
The enthalpies of combustion and formation of nicotinic acid and creatinine,
J. Res. NBS, 1975, 79, 425-429. [all data]
Notes
Go To: Top, Condensed phase thermochemistry data, References
- Symbols used in this document:
ΔcH°solid Enthalpy of combustion of solid at standard conditions ΔfH°solid Enthalpy of formation of solid at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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