Melting point :59-61 °C
Boiling point :38 °C/60 mmHg (lit.)
Density :0.851 g/mL at 20 °C 0.845 g/mL at 25 °C (lit.)
FEMA :3382 | 1-PENTEN-3-ONE
refractive index :n20/D 1.419(lit.)
Flash point :20 °F
storage temp. :2-8°C
solubility :Chloroform (Sparingly), Methanol (Slightly)
form :Liquid
color :Clear colorless to amber
Odor :at 1.00 % in propylene glycol. pungent peppery mustard garlic onion
Odor Type :spicy
Water Solubility :Insoluble in water; soluble in most organic solvents.
JECFA Number :1147
BRN :1735857
Exposure limits :ACGIH: TWA 2 mg/m3
NIOSH: TWA 10 mg/m3 LogP :0.65
CAS DataBase Reference :1629-58-9(CAS DataBase Reference)
NIST Chemistry Reference :1-Penten-3-one(1629-58-9)
EPA Substance Registry System :Ethyl vinyl ketone (1629-58-9)

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 H314 Causes severe skin burns and eye damage Skin corrosion/irritation Category 1A, B, C Danger P260,P264, P280, P301+P330+ P331,P303+P361+P353, P363, P304+P340,P310, P321, P305+ P351+P338, P405,P501
Precautionary statements:	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. 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.