Acetylene
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| Names | |
|---|---|
| IUPAC name
Acetylene
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| Seestematic IUPAC name
Ethyne[1] | |
| Identifiers | |
3D model (JSmol)
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| ChEBI | |
| ChEMBL | |
| ChemSpider | |
| ECHA InfoCard | 100.000.743 |
| KEGG | |
| UNII | |
| UN nummer | 1001 (dissolved) 3138 (in mixtur wi ethylene an propylene) |
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| Properties | |
| C2H2 | |
| Molar mass | 26.04 g·mol−1 |
| Density | 1.097 g/L = 1.097 kg/m3 |
| Meltin pynt | −80.8 °C, 192.4 K, −113.4 °F |
| Bylin pynt | −84 °C (−119 °F; 189 K) |
| slightly soluble | |
| Acidity (pKa) | 25 |
| Structur | |
| Molecular shape | Linear |
| Thermochemistry | |
| Staundart molar entropy S |
201 J·mol−1·K−1 |
| Std enthalpy o formation ΔfH |
+226.88 kJ/mol |
| Hazards | |
| NFPA 704 | |
Except whaur itherwise notit, data are gien for materials in thair staundart state (at 25 °C [77 °F], 100 kPa). | |
 verify (whit is   ?)
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| Infobox references | |
Acetylene (seestematic name: ethyne) is the chemical compoond wi the formula C2H2. It is a hydrocarbon an the simplest alkyne.[2] This colourless gas is widely uised as a fuel an a chemical biggin block. It is unstable in pure furm an sicweys is uisually haundled as a solution.[3] Pure acetylene is odorless, but commercial grades uisually hae a merked odor due tae impurities.[4]
As an alkyne, acetylene is unsaturatit acause its twa carbon atoms are bondit thegither in a triple bond. The carbon–carbon triple bond places aw fower atoms in the same straicht line, wi CCH bond angles o 180°. Syne acetylene is a linear symmetrical molecule, it possesses the D∞h pynt group.[5]
References[eedit | eedit soorce]
- ↑ Acyclic Hydrocarbons. Rule A-3. Unsaturated Compounds and Univalent Radicals, IUPAC Nomenclature of Organic Chemistry
- ↑ R.H.Petrucci, W.S.Harwood and F.G.Herring "General Chemistry", 8th edn.(Prentice-Hall 2002), p.1072
- ↑ Peter Pässler, Werner Hefner, Klaus Buckl, Helmut Meinass, Andreas Meiswinkel, Hans-Jürgen Wernicke, Günter Ebersberg, Richard Müller, Jürgen Bässler, Hartmut Behringer, Dieter Mayer "Acetylene" in Ullmann's Encyclopedia of Industrial Chemistry, 2008, Wiley-VCH, Weinheim. doi:10.1002/14356007.a01_097.pub3. Article Online Posting Date: 15 October 2008
- ↑ Compressed Gas Association (1995) [www.stoodyind.com/safety/msds/Acetylene.pdf Material Safety and Data Sheet – Acetylene].
- ↑ Housecroft, C. E.; Sharpe, A. G. (2008). Inorganic Chemistry (3rd ed.). Prentice Hall. pp. 94–95. ISBN 978-0131755536.