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Propină

Propină
Formula structurală
Formula structurală
Denumiri
Alte denumiriMetilacetilenă
Alilenă
Identificare
SMILES
Număr CAS74-99-7
ChEMBLCHEMBL116902
PubChem CID6335
Informații generale
Formulă chimicăC3H4
Aspectgaz incolor
Masă molară40,0639 g/mol
Proprietăți
Densitate0,53 g/cm3
Starea de agregaregazoasă
Punct de topire−102,7 °C
Punct de fierbere-23,2 °C
Solubilitate3,6 g/l
Presiune de vapori5,2 atm[1]  Modificați la Wikidata
F : Inflamabil
Inflamabil,
NFPA 704

4
1
3
Sunt folosite unitățile SI și condițiile de temperatură și presiune normale dacă nu s-a specificat altfel.
Modifică date / text Consultați documentația formatului

Propina, cunoscută și sub denumirea de metilacetilenă, este o alchină cu formula de structură H3C-C≡C-H.

Este un gaz incolor, cu miros caracteristic, mai dens decât aerul. Se descompune dacă este încălzită la temperaturi înalte și sub presiune se descompune în monoxid de carbon și dioxid de carbon, cauzând pericol de incendiu sau explozie.

Spre deosebire de acetilenă, propina poate fi condensată în siguranță.[2]

Note

  1. ^ http://www.cdc.gov/niosh/npg/npgd0392.html  Lipsește sau este vid: |title= (ajutor)
  2. ^ Peter Pässler, Werner Hefner, Klaus Buckl, Helmut Meinass, Andreas Meiswinkel, Hans-Jũrgen Wernicke, Günter Ebersberg, Richard Müller, Jürgen Bässler, Hartmut Behringer, Dieter Mayer, "Acetylene" in Ullmann's Encyclopedia of Industrial Chemistry Wiley-VCH, Weinheim 2007 (doi:097.pub2 10.1002/14356007.a01 097.pub2).

Vezi și

 Acest articol din domeniul chimiei este un ciot. Puteți ajuta Wikipedia prin completarea lui.


v • d • m
Alchine
Acetilenă (C
2H
4) • Propină (C
3H
6) • Butină (C
4H
8) • Pentină (C
5H
10) • Hexină (C
6H
12) • Heptină (C
7H
14) • Octină (C
8H
16) • Nonină (C
9H
18) • Decină (C
10H
20)

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