TRANS-2-PENTENAL Property

Melting point:

-101.15°C (estimate)

Boiling point:

80-81 °C160 mm Hg(lit.)

Density 

0.86 g/mL at 25 °C(lit.)

refractive index 

n20/D 1.440-1.446(lit.)

FEMA 

3218 | 2-PENTENAL

Flash point:

73 °F

Odor

at 1.00 % in dipropylene glycol. pungent green apple orange tomato

Odor Type

green

JECFA Number

1364

LogP

1.281 (est)

EPA Substance Registry System

2-Pentenal (764-39-6)

Safety

Hazard Codes 

Xi

Risk Statements 

10-36/37/38

Safety Statements 

29

RIDADR 

UN 1989 3/PG 2

WGK Germany 

3

RTECS 

SB1560000

F 

10

Toxicity

msc-ham:lng 300 mmol/L MUREAV 244,153,90

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Danger

Hazard statements

H225Highly Flammable liquid and vapour

H302Harmful if swallowed

H311Toxic in contact with skin

H317May cause an allergic skin reaction

H319Causes serious eye irritation

H411Toxic to aquatic life with long lasting effects

Precautionary statements

P210Keep away from heat/sparks/open flames/hot surfaces. — No smoking.

P233Keep container tightly closed.

P240Ground/bond container and receiving equipment.

P241Use explosion-proof electrical/ventilating/lighting/…/equipment.

P242Use only non-sparking tools.

P243Take precautionary measures against static discharge.

P261Avoid breathing dust/fume/gas/mist/vapours/spray.

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

P270Do not eat, drink or smoke when using this product.

P272Contaminated work clothing should not be allowed out of the workplace.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P301+P312IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell.

P302+P352IF ON SKIN: wash with plenty of soap and water.

P303+P361+P353IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

P312Call a POISON CENTER or doctor/physician if you feel unwell.

P321Specific treatment (see … on this label).

P322Specific measures (see …on this label).

P330Rinse mouth.

P333+P313IF SKIN irritation or rash occurs: Get medical advice/attention.

P361Remove/Take off immediately all contaminated clothing.

P363Wash contaminated clothing before reuse.

P370+P378In case of fire: Use … for extinction.

P403+P235Store in a well-ventilated place. Keep cool.

P405Store locked up.

P501Dispose of contents/container to..…

TRANS-2-PENTENAL Chemical Properties,Usage,Production

Chemical Properties

2-Pentenal has a pungent, green, apple, orange, tomato odor.

Occurrence

Reported found in aqueous orange essence (trans-form); as a flavor component in cognac oil, in Chrysocoris stolli, in tomato aroma, in the autooxidation of cod liver oil, in peas, as a flavoring component of reverted soybean oil, in salmon oil, in potato chips during storage, in butterfat fishy flavor. Also reported found in strawberry, cooked potato, wheat bread, parmesan cheese, butter, caviar, fatty fish, cooked beef, tea, peanuts, peas, trassi, mango, raspberry, pumpkin, Bourbon vanilla, oysters and loganberry.

Preparation

By treating β-phenoxyacrolein with secondary amines, Grignard reagent and active methylene compounds; by heating 1-ethoxy-1,3-pentadiene with H3PO4 at 80°C; from cis- and trans-but-2-ene-1,4-diol and SOCl2, followed by treatment of the chloroalcohol with methyl magnesium bromide and final oxidation with MnO2.

Definition

ChEBI: An enal consisting of pent-2-ene having an oxo group at the 1-position

Safety Profile

Poison by intraperitoneal route. Mutation data reported. Whenheated to decomposition it emits acrid smoke and irritating fumes.