trans-2-Hexenal

*trans*-2-Hexenal
Names
	Preferred IUPAC name (2E)-hex-2-enal
	Other names (trans)-2-Hexenal; (2(E))-hexenal; 6728-26-3; (E)-Hex-2-enal; 3-propylacrolein; β-propylacrolein
Identifiers
CAS Number	6728-26-3;
3D model (JSmol)	Interactive image;
ChEBI	CHEBI:28913;
ChEMBL	ChEMBL2228570;
ChemSpider	4444608;
ECHA InfoCard	100.027.072
EC Number	229-778-1;
KEGG	C08497;
PubChem CID	5281168;
UNII	69JX3AIR1I;
CompTox Dashboard (EPA)	DTXSID1041425 ;
	InChI InChI=1S/C6H10O/c1-2-3-4-5-6-7/h4-6H,2-3H2,1H3/b5-4+ Key: MBDOYVRWFFCFHM-SNAWJCMRSA-N;
	SMILES CCC/C=C/C=O;
Properties
Chemical formula	C6H10O
Molar mass	98.14 g/mol
Density	0.841-0.848 g/cm3
Boiling point	47.00°C @ 17.00 mmHg
Vapor pressure	6.6 mmHg
Hazards
	GHS labelling:[1]
Pictograms
Signal word	Danger
Hazard statements	H226, H302, H311, H317, H319, H411
Precautionary statements	P210, P233, P240, P241, P242, P243, P261, P262, P264, P264+P265, P270, P272, P273, P280, P301+P317, P302+P352, P303+P361+P353, P305+P351+P338, P316, P321, P330, P333+P317, P337+P317, P361+P364, P362+P364, P370+P378, P391, P403+P235, P405, P501
Related compounds
Related alkenals	(cis)-3-hexenal
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

trans-2-Hexenal is an organic unsaturated aldehyde with a six-carbon chain. This clear, pale yellow liquid has a green, leafy, herbal fruit smell. It occurs naturally in a wide variety of plants, fruits, vegetables, and spices, and appears to be an important mediating and signalling chemical in plant-fungus and plant-insect interactions, such as the symbiosis between acacia ants and Acacias.