Propadien
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| Nazivi | |||
|---|---|---|---|
| IUPAC naziv
Allene
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| Identifikacija | |||
3D model (Jmol)
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| Bajlštajn | 1730774 | ||
| ChEBI | |||
| ChemSpider | |||
| ECHA InfoCard | 100.006.670 | ||
| EC broj | 207-335-3 | ||
| Gmelin Referenca | 860 | ||
| MeSH | Propadiene | ||
| UN broj | 2200 | ||
| |||
| Svojstva | |||
| C3H4 | |||
| Molarna masa | 40,07 g·mol−1 | ||
| Agregatno stanje | bezbojan gas | ||
| Tačka topljenja | −136 °C (−213 °F; 137 K) | ||
| Tačka ključanja | −34 °C (−29 °F; 239 K) | ||
| log P | 1.45 | ||
| Opasnosti | |||
| Bezbednost prilikom rukovanja | External MSDS | ||
EU klasifikacija (DSD)
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| R-oznake | R12 | ||
| S-oznake | S9, S16, S33 | ||
| NFPA 704 | |||
| Eksplozivni limiti | 13% | ||
Ukoliko nije drugačije napomenuto, podaci se odnose na standardno stanje materijala (na 25 °C [77 °F], 100 kPa). | |||
| Reference infokutije | |||
Propadien je organsko jedinjenje sa formulom H2C=C=CH2. Ono je najjednostavniji alen, jedinjenje sa spojenim C=C dvostrukim vezama.[3][4] Propadienovo uobičajeno ime je alen.[5] Kao sastojak MAPP gasa, on se koristi kao gorivo za specijalizovano varenje.
Produkcija i ekvilibrijum sa propinom
Alen postoji u ravnoteži sa propinom. Ova mešavina se još naziva MAPD po: metil acetilen (alternativno ime propina)-propadien:
- H3CC≡CH ⇌ H2C=C=CH2
Keq = 0.22 (270°C), 0.1 K (5°C)
Reference
- ^ 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. PMID 20970519. doi:10.1016/j.drudis.2010.10.003.
- ^ 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.
- ^ Clayden, Jonathan; Greeves, Nick; Warren, Stuart; Wothers, Peter (2001). Organic Chemistry (I изд.). Oxford University Press. ISBN 978-0-19-850346-0.
- ^ Smith, Michael B.; March, Jerry (2007). Advanced Organic Chemistry: Reactions, Mechanisms, and Structure (6th изд.). New York: Wiley-Interscience. ISBN 0-471-72091-7.
- ^ IUPAC. „allenes”. Kompendijum hemijske terminologije (Internet izdanje).
Literatura
Spoljašnje veze
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