Propadien

Propadien
Stereo structural formula of propadiene with explicit hydrogens
Stereo structural formula of propadiene with explicit hydrogens
Spacefill model of propadiene
Spacefill model of propadiene
Ball and stick model of propadiene
Nazivi
IUPAC naziv
Allene
Identifikacija
3D model (Jmol)
Bajlštajn 1730774
ChEBI
ChemSpider
ECHA InfoCard 100.006.670
EC broj 207-335-3
Gmelin Referenca 860
MeSH Propadiene
UN broj 2200
  • C=C=C
  • C(=C)=C
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
Flammable F+
R-oznake R12
S-oznake S9, S16, S33
NFPA 704
NFPA 704 four-colored diamondFlammability code 4: Will rapidly or completely vaporize at normal atmospheric pressure and temperature, or is readily dispersed in air and will burn readily. Flash point below 23 °C (73 °F). E.g., propaneЗдравствени код 0: Излагање под стањем ватре не би представљало опасност осим оне обичног горљивог материјала (нпр. натријум хлорид)Reactivity code 3: Capable of detonation or explosive decomposition but requires a strong initiating source, must be heated under confinement before initiation, reacts explosively with water, or will detonate if severely shocked. E.g., fluorine
4
0
3
Eksplozivni limiti 13%
Ukoliko nije drugačije napomenuto, podaci se odnose na standardno stanje materijala (na 25 °C [77 °F], 100 kPa).
Зелена квачицаДа verifikuj (šta je Зелена квачицаДаRed КрстићНе ?)
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

  1. ^ 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.  уреди
  2. ^ 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. 
  3. ^ Clayden, Jonathan; Greeves, Nick; Warren, Stuart; Wothers, Peter (2001). Organic Chemistry (I изд.). Oxford University Press. ISBN 978-0-19-850346-0. 
  4. ^ Smith, Michael B.; March, Jerry (2007). Advanced Organic Chemistry: Reactions, Mechanisms, and Structure (6th изд.). New York: Wiley-Interscience. ISBN 0-471-72091-7. 
  5. ^ IUPAC. „allenes”. Kompendijum hemijske terminologije (Internet izdanje).

Literatura

Spoljašnje veze

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