Propan

Propan
Skeletal formula of propane	Skeletal formula of propane with all implicit carbons shown, and all explicit hydrogens added
Ball and stick model of propane	Spacefill model of propane
	Propan
Identifikacija
CAS registarski broj	74-98-6
PubChem	6334
ChemSpider	6094
UNII	T75W9911L6
EINECS broj	200-827-9
UN broj	1978
KEGG	D05625
ChEBI	32879
ChEMBL	CHEMBL135416
RTECS registarski broj toksičnosti	TX2275000
Bajlštajn	1730718
Gmelin Referenca	25044
Jmol-3D slike	Slika 1
SMILES
	CCC
InChI
	InChI=1S/C3H8/c1-3-2/h3H2,1-2H3 ; Kod: ATUOYWHBWRKTHZ-UHFFFAOYSA-N
Svojstva
Molekulska formula	C3H8
Molarna masa	44.1 g mol−1
Agregatno stanje	Bezbojni gas
Miris	Bez mirisa
Gustina	2,0098 mg mL−1 (na 0 °C, 101.3 kPa)
Tačka topljenja	-188 °C, 85.5 K, -306 °F
Tačka ključanja	-42--42 °C, 230.9-231.11 K, -44--44 °F
Rastvorljivost u vodi	40 mg L−1 (na 0 °C)
log P	2,236
Napon pare	853,16 kPa (na 21,1 °C)
kH	15 nmol Pa−1 kg−1
Termohemija
Standardna entalpija stvaranja jedinjenja ΔfHo298	−105,2–−104,2 kJ mol−1
Std entalpija; sagorevanja ΔcHo298	−2,2197–−2,2187 MJ mol−1
Specifični toplotni kapacitet, C	73,60 J K−1 mol−1
Opasnost
EU-klasifikacija	F+
EU-indeks	601-003-00-5
NFPA 704	4 1 0
R-oznake	R12
S-oznake	S2, S16
Tačka paljenja	−104 °C
Tačka spontanog paljenja	540 °C
Eksplozivni limiti	2,37–9,5%
Srodna jedinjenja
Srodna alkani	Etan; Etil jodid; n-Propil jodid; Izopropil jodid; Butan; Butil jodid;
Srodna jedinjenja	Dijodohidroksipropan
	(šta je ovo?) (verifikuj) ; Ukoliko nije drugačije napomenuto, podaci se odnose na standardno stanje (25 °C, 100 kPa) materijala
	Infobox references

Propan, (molekulska formula C₃H₈), je bezbojan alkan, u gasovitom agregatnom stanju.

Propan je nerastvorljiv u vodi, a rastvara se u organskim rastvaračima kao što je npr. Etil alkohol. U malim količinama se javlja u zemnom gasu a u većim količinama javlja se u nafti. Iz nafte se dobiva destilacijom u obliku smeše sa butanom, koja se koristi kao gorivo poznato pod nazivom Plin koji se koristi za punjenje boca koje se koriste u domaćinstvima, a koristi se i kao gorivo za vozila.

Propan je veoma slabo reaktivan kao i svi alkani. Na višim temperaturama podleže reakcijama paljenja, a reaguje i sa gasovitim hlorovodonikom i hlorom, usled čega nastaju hloroalkani. Propan je sirovina za mnoge organske sinteze.

Granice zapaljivosti u smesi sa vazduhom (u zapreminskim procentima gasa) su 2,1 ÷ 9,5 vol% (u prisustvu izvora upaljenja).

Osobine

Osobina	Vrednost
Broj akceptora vodonika	0
Broj donora vodonika	0
Broj rotacionih veza	0
Particioni koeficijent^[7] (ALogP)	1,7
Rastvorljivost^[8] (logS, log(mol/L))	-0,4
Polarna površina^[9] (PSA, Å²)	0,0

Reference

↑ „Propane – Compound Summary”. PubChem Compound. USA: National Center for Biotechnology Information. 27. 3. 2005.. Identification and Related Records. Pristupljeno 8. 12. 2011.
↑ Li Q, Cheng T, Wang Y, Bryant SH (2010). „PubChem as a public resource for drug discovery.”. Drug Discov Today 15 (23-24): 1052-7. DOI:10.1016/j.drudis.2010.10.003. PMID 20970519. edit
↑ Evan E. Bolton, Yanli Wang, Paul A. Thiessen, Stephen H. Bryant (2008). „Chapter 12 PubChem: Integrated Platform of Small Molecules and Biological Activities”. Annual Reports in Computational Chemistry 4: 217-241. DOI:10.1016/S1574-1400(08)00012-1.
↑ Hettne KM, Williams AJ, van Mulligen EM, Kleinjans J, Tkachenko V, Kors JA. (2010). „Automatic vs. manual curation of a multi-source chemical dictionary: the impact on text mining”. J Cheminform 2 (1): 3. DOI:10.1186/1758-2946-2-3. PMID 20331846. edit
↑ Joanne Wixon, Douglas Kell (2000). „Website Review: The Kyoto Encyclopedia of Genes and Genomes — KEGG”. Yeast 17 (1): 48–55. DOI:10.1002/(SICI)1097-0061(200004)17:1<48::AID-YEA2>3.0.CO;2-H.
↑ Gaulton A, Bellis LJ, Bento AP, Chambers J, Davies M, Hersey A, Light Y, McGlinchey S, Michalovich D, Al-Lazikani B, Overington JP. (2012). „ChEMBL: a large-scale bioactivity database for drug discovery”. Nucleic Acids Res 40 (Database issue): D1100-7. DOI:10.1093/nar/gkr777. PMID 21948594. edit
↑ Ghose, A.K., Viswanadhan V.N., and Wendoloski, J.J. (1998). „Prediction of Hydrophobic (Lipophilic) Properties of Small Organic Molecules Using Fragment Methods: An Analysis of AlogP and CLogP Methods”. J. Phys. Chem. A 102: 3762-3772. DOI:10.1021/jp980230o.
↑ Tetko IV, Tanchuk VY, Kasheva TN, Villa AE. (2001). „Estimation of Aqueous Solubility of Chemical Compounds Using E-State Indices”. Chem Inf. Comput. Sci. 41: 1488-1493. DOI:10.1021/ci000392t. PMID 11749573.
↑ Ertl P., Rohde B., Selzer P. (2000). „Fast calculation of molecular polar surface area as a sum of fragment based contributions and its application to the prediction of drug transport properties”. J. Med. Chem. 43: 3714-3717. DOI:10.1021/jm000942e. PMID 11020286.

Literatura

Clayden Jonathan, Nick Greeves, Stuart Warren, Peter Wothers (2001). Organic chemistry. Oxford, Oxfordshire: Oxford University Press. ISBN 0-19-850346-6.
Smith, Michael B.; March, Jerry (2007). Advanced Organic Chemistry: Reactions, Mechanisms, and Structure (6th izd.). New York: Wiley-Interscience. ISBN 0-471-72091-7.

Povezano

Butan
Tečni naftni gas (TNG)

Spoljašnje veze

Portal Hemija

Propane

[1] „Propane – Compound Summary”. PubChem Compound. USA: National Center for Biotechnology Information. 27. 3. 2005.. Identification and Related Records. Pristupljeno 8. 12. 2011.

[2] Li Q, Cheng T, Wang Y, Bryant SH (2010). „PubChem as a public resource for drug discovery.”. Drug Discov Today 15 (23-24): 1052-7. DOI:10.1016/j.drudis.2010.10.003. PMID 20970519. edit

[3] Evan E. Bolton, Yanli Wang, Paul A. Thiessen, Stephen H. Bryant (2008). „Chapter 12 PubChem: Integrated Platform of Small Molecules and Biological Activities”. Annual Reports in Computational Chemistry 4: 217-241. DOI:10.1016/S1574-1400(08)00012-1.

[4] Hettne KM, Williams AJ, van Mulligen EM, Kleinjans J, Tkachenko V, Kors JA. (2010). „Automatic vs. manual curation of a multi-source chemical dictionary: the impact on text mining”. J Cheminform 2 (1): 3. DOI:10.1186/1758-2946-2-3. PMID 20331846. edit

[5] Joanne Wixon, Douglas Kell (2000). „Website Review: The Kyoto Encyclopedia of Genes and Genomes — KEGG”. Yeast 17 (1): 48–55. DOI:10.1002/(SICI)1097-0061(200004)17:1<48::AID-YEA2>3.0.CO;2-H.

[6] Gaulton A, Bellis LJ, Bento AP, Chambers J, Davies M, Hersey A, Light Y, McGlinchey S, Michalovich D, Al-Lazikani B, Overington JP. (2012). „ChEMBL: a large-scale bioactivity database for drug discovery”. Nucleic Acids Res 40 (Database issue): D1100-7. DOI:10.1093/nar/gkr777. PMID 21948594. edit

[7] Ghose, A.K., Viswanadhan V.N., and Wendoloski, J.J. (1998). „Prediction of Hydrophobic (Lipophilic) Properties of Small Organic Molecules Using Fragment Methods: An Analysis of AlogP and CLogP Methods”. J. Phys. Chem. A 102: 3762-3772. DOI:10.1021/jp980230o.

[8] Tetko IV, Tanchuk VY, Kasheva TN, Villa AE. (2001). „Estimation of Aqueous Solubility of Chemical Compounds Using E-State Indices”. Chem Inf. Comput. Sci. 41: 1488-1493. DOI:10.1021/ci000392t. PMID 11749573.

[9] Ertl P., Rohde B., Selzer P. (2000). „Fast calculation of molecular polar surface area as a sum of fragment based contributions and its application to the prediction of drug transport properties”. J. Med. Chem. 43: 3714-3717. DOI:10.1021/jm000942e. PMID 11020286.

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