Melting point :-20°C
Boiling point :133-135 °C (lit.)
Density :0.878 g/mL at 20 °C 0.872 g/mL at 25 °C (lit.)
vapor pressure :7 mm Hg ( 20 °C)
refractive index :n20/D 1.462(lit.)
FEMA :3646 | 3-METHYL-2-BUTENAL
Flash point :93 °F
storage temp. :2-8°C
solubility :soluble
form :Liquid
color :Clear colorless to light yellow
Odor :at 1.00 % in dipropylene glycol. sweet fruity pungent brown nutty almond cherry
Odor Type :fruity
Water Solubility :soluble
Sensitive :Air Sensitive
Merck :14,8448
JECFA Number :1202
BRN :1734740
LogP :0.53 at 25℃
CAS DataBase Reference :107-86-8(CAS DataBase Reference)
NIST Chemistry Reference :3-methyl-2-butenal(107-86-8)
EPA Substance Registry System :2-Butenal, 3-methyl- (107-86-8)

Symbol(GHS):
Signal word:	Danger
Hazard statements:	Code Hazard statements Hazard class Category Signal word Pictogram P-Codes H226 Flammable liquid and vapour Flammable liquids Category 3 Warning H302 Harmful if swallowed Acute toxicity,oral Category 4 Warning P264, P270, P301+P312, P330, 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 H317 May cause an allergic skin reaction Sensitisation, Skin Category 1 Warning P261, P272, P280, P302+P352,P333+P313, P321, P363, P501 H331 Toxic if inhaled Acute toxicity,inhalation Category 3 Danger P261, P271, P304+P340, P311, P321,P403+P233, P405, P501
Precautionary statements:	P210 Keep away from heat/sparks/open flames/hot surfaces. — No smoking. 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. P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.