4-Octyne

4-Octyne
Names
	Preferred IUPAC name Oct-4-yne
	Other names Dipropylacetylene; 1,2-Dipropylacetylene; Dipropylethyne;
Identifiers
CAS Number	1942-45-6 ;
3D model (JSmol)	Interactive image;
ChemSpider	15221;
ECHA InfoCard	100.016.119
EC Number	217-730-2;
PubChem CID	16029;
UNII	IJI0Q2V1Z6 ;
CompTox Dashboard (EPA)	DTXSID6074338 ;
	InChI InChI=1S/C8H14/c1-3-5-7-8-6-4-2/h3-6H2,1-2H3 Key: GZTNBKQTTZSQNS-UHFFFAOYSA-N; InChI=1/C8H14/c1-3-5-7-8-6-4-2/h3-6H2,1-2H3 Key: GZTNBKQTTZSQNS-UHFFFAOYAB;
	SMILES CCCC#CCCC;
Properties
Chemical formula	C8H14
Molar mass	110.200 g·mol−1
Appearance	colorless liquid
Density	0.751 g/mL
Melting point	−103 °C (−153 °F; 170 K)
Boiling point	131–132 °C (268–270 °F; 404–405 K)
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

4-Octyne, also known as dipropylethyne, is a type of alkyne with a triple bond at its fourth carbon (the '4-' indicates the location of the triple bond in the chain). Its formula is C₈H₁₄.

4-Octyne forms with 5-decyne, 3-hexyne, and 2-butyne a group of symmetric alkynes.

Names

Preferred IUPAC name Oct-4-yne
Other names Dipropylacetylene 1,2-Dipropylacetylene Dipropylethyne
Identifiers
CAS Number	1942-45-6^Y
3D model (JSmol)	Interactive image
ChemSpider	15221
ECHA InfoCard	100.016.119
EC Number	217-730-2
PubChem CID	16029
UNII	IJI0Q2V1Z6^Y
CompTox Dashboard (EPA)	DTXSID6074338
InChI InChI=1S/C8H14/c1-3-5-7-8-6-4-2/h3-6H2,1-2H3 Key: GZTNBKQTTZSQNS-UHFFFAOYSA-N InChI=1/C8H14/c1-3-5-7-8-6-4-2/h3-6H2,1-2H3 Key: GZTNBKQTTZSQNS-UHFFFAOYAB
SMILES CCCC#CCCC
Properties
Chemical formula	C₈H₁₄
Molar mass	110.200 g·mol⁻¹
Appearance	colorless liquid
Density	0.751 g/mL
Melting point	−103 °C (−153 °F; 170 K)
Boiling point	131–132 °C (268–270 °F; 404–405 K)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references