Camphor
- Formula: C10H16O
- Molecular weight: 152.2334
- IUPAC Standard InChIKey: DSSYKIVIOFKYAU-UHFFFAOYSA-N
- CAS Registry Number: 21368-68-3
- 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. - Species with the same structure:
- Stereoisomers:
- Other names: Bicyclo[2.2.1]heptan-2-one, 1,7,7-trimethyl-; Root bark oil; Spirit of camphor; 1,7,7-Trimethylbicyclo[2.2.1]-2-heptanone; 1,7,7-Trimethylnorcamphor; 2-Bornanone; 2-Camphanone; 1,7,7-Trimethyl-bicyclo[2.2.1]heptan-2-one; 2-Camphonone; Gum camphor; Bornane, 2-oxo-; Camphor, synthetic; Huile de camphre; 2-Kamfanon; Kampfer; 2-Keto-1,7,7-trimethylnorcamphane; Matricaria camphor; Norcamphor, 1,7,7-trimethyl-; UN 2717; Bicyclo[2.2.1]heptane-2-one, 1,7,7-trimethyl-; Alphanon; DL-Camphor; Borneo camphor; Bicyclo[2.2.1]heptan-2-one, 1,7,7-trimethyl-, (.+/-.)-; (.+/-.)-Camphor; Camphre; bornan-2-one; Camphor(DL)
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Condensed phase thermochemistry 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 by: Eugene S. Domalski and Elizabeth D. Hearing
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
S°solid,1 bar | 290.15 | J/mol*K | N/A | Nagumo, Matsuo, et al., 1989 | crystaline, I phase; Annealed sample. |
S°solid,1 bar | 291.76 | J/mol*K | N/A | Nagumo, Matsuo, et al., 1989 | crystaline, I phase; Quenched sample. |
Constant pressure heat capacity of solid
Cp,solid (J/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
238.7 | 251.22 | Nagumo, Matsuo, et al., 1989 | crystaline, I phase; T = 36 to 252 K. Unsmoothed experimental datum. Annealed sample. |
251.2 | 301.55 | Nagumo, Matsuo, et al., 1989 | crystaline, I phase; T = 14 to 375 K. Unsmoothed experimental datum. Quenched sample. |
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
DH - Eugene S. Domalski and Elizabeth D. Hearing
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
Tboil | 477.2 | K | N/A | Aldrich Chemical Company Inc., 1990 | BS |
Quantity | Value | Units | Method | Reference | Comment |
Tfus | 445.6 | K | N/A | Andersson and Ross, 1992 | Crystal phase 1 phase; Uncertainty assigned by TRC = 3. K; TRC |
Tfus | 451.3 | K | N/A | Andersson and Ross, 1992 | Crystal phase 1 phase; Uncertainty assigned by TRC = 1.5 K; TRC |
Temperature of phase transition
Ttrs (K) | Initial Phase | Final Phase | Reference | Comment |
---|---|---|---|---|
218.2 | crystaline, II | crystaline, I | Nagumo, Matsuo, et al., 1989 | DH |
209.1 | crystaline, II | crystaline, I | Nagumo, Matsuo, et al., 1989 | DH |
Enthalpy of phase transition
ΔHtrs (kJ/mol) | Temperature (K) | Initial Phase | Final Phase | Reference | Comment |
---|---|---|---|---|---|
0.840 | 210. | crystaline, II | crystaline, I | Schfer, 1953 | DH |
Entropy of phase transition
ΔStrs (J/mol*K) | Temperature (K) | Initial Phase | Final Phase | Reference | Comment |
---|---|---|---|---|---|
4.0 | 210. | crystaline, II | crystaline, I | Schfer, 1953 | DH |
Gas Chromatography
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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 by: NIST Mass Spectrometry Data Center, William E. Wallace, director
Normal alkane RI, non-polar column, temperature ramp
Column type | Active phase | I | Reference | Comment |
---|---|---|---|---|
Capillary | OV-101 | 1136. | Egolf and Jurs, 1993 | 2. K/min; Column length: 50. m; Column diameter: 0.22 mm; Tstart: 80. C; Tend: 200. C |
Normal alkane RI, polar column, temperature ramp
Column type | Active phase | I | Reference | Comment |
---|---|---|---|---|
Capillary | Carbowax 20M | 1518. | Egolf and Jurs, 1993 | 2. K/min; Column length: 80. m; Column diameter: 0.2 mm; Tstart: 70. C; Tend: 170. C |
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.
Nagumo, Matsuo, et al., 1989
Nagumo, T.; Matsuo, T.; Suga, H.,
Thermodynamic study on camphor crystals,
Thermochim. Acta, 1989, 139, 121-132. [all data]
Aldrich Chemical Company Inc., 1990
Aldrich Chemical Company Inc.,
Catalog Handbook of Fine Chemicals, Aldrich Chemical Company, Inc., Milwaukee WI, 1990, 1. [all data]
Andersson and Ross, 1992
Andersson, O.; Ross, R.G.,
Thermal conductivity of (+)- and (±)-camphor at pressures up to 0.5 GPa and temperatures down to 40 K,
Mol. Phys., 1992, 76, 433-44. [all data]
Schfer, 1953
Schfer, K.,
Fenomenos de orden y desorden en solidos,
An. R. Soc. Esp. Fis. Quim. Ser., 1953, B 49, 161-174. [all data]
Egolf and Jurs, 1993
Egolf, L.M.; Jurs, P.C.,
Quantitative structure-retention and structure-odor intensity relationships for a diverse group of odor-active compounds,
Anal. Chem., 1993, 65, 21, 3119-3126, https://doi.org/10.1021/ac00069a027
. [all data]
Notes
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- Symbols used in this document:
Cp,solid Constant pressure heat capacity of solid S°solid,1 bar Entropy of solid at standard conditions (1 bar) Tboil Boiling point Tfus Fusion (melting) point Ttrs Temperature of phase transition ΔHtrs Enthalpy of phase transition ΔStrs Entropy of phase transition - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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