3-Hexyne

3-Hexyne
Names
	Preferred IUPAC name Hex-3-yne
	Other names Diethylacetylene
Identifiers
CAS Number	928-49-4 ;
3D model (JSmol)	Interactive image; Interactive image;
ChemSpider	12979 ;
ECHA InfoCard	100.011.977
EC Number	213-173-4;
PubChem CID	13568;
UNII	9GTQ990Q4K ;
CompTox Dashboard (EPA)	DTXSID30239144 ;
	InChI InChI=1S/C6H10/c1-3-5-6-4-2/h3-4H2,1-2H3 Key: DQQNMIPXXNPGCV-UHFFFAOYSA-N ; InChI=1/C6H10/c1-3-5-6-4-2/h3-4H2,1-2H3 Key: DQQNMIPXXNPGCV-UHFFFAOYAF;
	SMILES C(#CCC)CC; CCC#CCC;
Properties
Chemical formula	C6H10
Molar mass	82.14 g/mol
Appearance	Colorless liquid
Density	0.723 g/cm3
Melting point	−105 °C (−157 °F; 168 K)
Boiling point	81 to 82 °C (178 to 180 °F; 354 to 355 K)
Solubility in water	low
Hazards
	GHS labelling:
Pictograms
Signal word	Danger
Hazard statements	H225, H304, H315, H319, H335
Precautionary statements	P210, P233, P240, P241, P242, P243, P261, P264, P271, P280, P301+P310, P302+P352, P303+P361+P353, P304+P340, P305+P351+P338, P312, P321, P331, P332+P313, P337+P313, P362, P370+P378, P403+P233, P403+P235, P405, P501
Flash point	−14 °C (7 °F; 259 K)
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

3-Hexyne is the organic compound with the formula C₂H₅CCC₂H₅. This colorless liquid is one of three isomeric hexynes. 3-Hexyne forms with 5-decyne, 4-octyne, and 2-butyne a series of symmetric alkynes. It is a reagent in organometallic chemistry.

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