Phenylacetylene

Phenylacetylene

Names
IUPAC name Ethynylbenzene
Identifiers
CAS Number	536-74-3 Y
3D model (Jmol)	Interactive image
ChEMBL	ChEMBL234833 Y
ChemSpider	10364 Y
ECHA InfoCard	100.007.861
PubChem	10821
InChI InChI=1S/C8H6/c1-2-8-6-4-3-5-7-8/h1,3-7H Y Key: UEXCJVNBTNXOEH-UHFFFAOYSA-N Y InChI=1/C8H6/c1-2-8-6-4-3-5-7-8/h1,3-7H Key: UEXCJVNBTNXOEH-UHFFFAOYAC
SMILES C#Cc1ccccc1
Properties
Chemical formula	C8H6
Molar mass	102.133 g/mol
Density	0.93 g/cm3
Melting point	−45 °C (−49 °F; 228 K)
Boiling point	142 to 144 °C (288 to 291 °F; 415 to 417 K)
Acidity (pKa)	28.8
Magnetic susceptibility (χ)	-72.01·10−6 cm3/mol
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Y  (what is YN ?)
Infobox references

Phenylacetylene is an alkyne hydrocarbon containing a phenyl group. It exists as a colorless, viscous liquid. In research, it is sometimes used as an analog for acetylene; being a liquid, it is easier to handle than acetylene gas.

In the laboratory, phenylacetylene can be prepared by elimination of hydrogen bromide from styrene dibromide using sodium amide in ammonia:

It can also be prepared by the elimination of hydrogen bromide from bromostyrene using molten potassium hydroxide.