Boiling point :121-124 °C (lit.)
Density :0.862 g/mL at 25 °C (lit.)
vapor pressure :760 mm Hg ( 121 °C)
refractive index :n20/D 1.437(lit.)
FEMA :3417 | 3-PENTEN-2-ONE
Flash point :70 °F
storage temp. :Sealed in dry,2-8°C
solubility :Chloroform (Sparingly), Ethyl Acetate (Slightly)
form :Liquid
color :Clear colorless
Odor :at 0.10 % in dipropylene glycol. fruity acetone phenolic fishy
Odor Type :fruity
Water Solubility :Slightly soluble in Water
JECFA Number :1124
BRN :1633505
Stability :Stable. Flammable. Incompatible with strong oxidizing and strong reducing agents, strong acids, strong bases.
LogP :0.56
EPA Substance Registry System :3-Penten-2-one (625-33-2)

Symbol(GHS):
Signal word:	Danger
Hazard statements:	Code Hazard statements Hazard class Category Signal word Pictogram P-Codes H225 Highly Flammable liquid and vapour Flammable liquids Category 2 Danger P210,P233, P240, P241, P242, P243,P280, P303+ P361+P353, P370+P378,P403+P235, P501 H311 Toxic in contact with skin Acute toxicity,dermal Category 3 Danger P280, P302+P352, P312, P322, P361,P363, P405, P501 H315 Causes skin irritation Skin corrosion/irritation Category 2 Warning P264, P280, P302+P352, P321,P332+P313, P362 H319 Causes serious eye irritation Serious eye damage/eye irritation Category 2A Warning P264, P280, P305+P351+P338,P337+P313P H335 May cause respiratory irritation Specific target organ toxicity, single exposure;Respiratory tract irritation Category 3 Warning
Precautionary statements:	P210 Keep away from heat/sparks/open flames/hot surfaces. — No smoking. P233 Keep container tightly closed. P240 Ground/bond container and receiving equipment. P280 Wear protective gloves/protective clothing/eye protection/face protection. P303+P361+P353 IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower. P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.