trans-2-Heptenal

Synonym(s):(E)-2-Heptenal

CAS NO.：18829-55-5
Empirical Formula: C7H12O
Molecular Weight: 112.17
MDL number: MFCD00007010
EINECS: 242-608-0
SAFETY DATA SHEET (SDS)
Update Date: 2024-11-19 20:33:22

What is trans-2-Heptenal?

Chemical properties

clear colorless to light yellow liquid

The Uses of trans-2-Heptenal

trans-2-Heptenal is found in the scent-gland secretion of Oebalus pugnax (rice stink bug). trans-2-Heptenal is also an odour active compound found in guava.

Definition

ChEBI: (E)-hept-2-enal is a monounsaturated fatty aldehyde that is (2E)-hept-2-ene which is carrying an oxo group at position 1. Found in the peel of Malaysian pink and white pomelo peel and in the scent gland secretion of the rice stink bug Oebalus pugnax. It has a role as a plant metabolite and a uremic toxin. It is an enal, a monounsaturated fatty aldehyde and a medium-chain fatty aldehyde.

Synthesis Reference(s)

Journal of the American Chemical Society, 108, p. 452, 1986 DOI: 10.1021/ja00263a015
Tetrahedron Letters, 21, p. 3987, 1980 DOI: 10.1016/S0040-4039(00)92851-X

General Description

trans-2-Heptenal is a volatile flavor constituent identified in heated butter and tomato.

Properties of trans-2-Heptenal

Melting point:	-53.35°C (estimate)
Boiling point:	90-91 °C50 mm Hg(lit.)
Density	0.857 g/mL at 25 °C(lit.)
vapor density	>1 (vs air)
refractive index	n20/D 1.450(lit.)
FEMA	3165 \| TRANS-2-HEPTENAL
Flash point:	128 °F
storage temp.	2-8°C
form	neat
form	Liquid
color	Colorless to Light yellow to Light orange
Odor	at 1.00 % in dipropylene glycol. pungent green vegetable fresh fatty
JECFA Number	1360
BRN	1700822
CAS DataBase Reference	18829-55-5(CAS DataBase Reference)
NIST Chemistry Reference	2-Heptenal, (E)-(18829-55-5)
EPA Substance Registry System	2-Heptenal, (2E)- (18829-55-5)

Safety information for trans-2-Heptenal

Signal word	Danger
Pictogram(s)	Flame Flammables GHS02 Skull and Crossbones Acute Toxicity GHS06
GHS Hazard Statements	H226:Flammable liquids H311:Acute toxicity,dermal H317:Sensitisation, Skin
Precautionary Statement Codes	P210:Keep away from heat/sparks/open flames/hot surfaces. — No smoking. P233:Keep container tightly closed. P280:Wear protective gloves/protective clothing/eye protection/face protection. P301+P312:IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell. P303+P361+P353:IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower.