Melting point :26-28 °C(lit.)
Boiling point :123-125 °C30 mm Hg(lit.)
Density :0.979 g/mL at 25 °C
vapor density :>1 (vs air)
FEMA :3195 | 2-METHYL-2-PENTENOIC ACID
refractive index :n20/D 1.46(lit.)
Flash point :226 °F
storage temp. :Sealed in dry,Room Temperature
pka :5.00±0.19(Predicted)
form :powder to lump
color :White to Almost white
Odor :at 10.00 % in dipropylene glycol. dry acid sweaty strawberry woody fruity jam
Odor Type :acidic
FreezingPoint :20.0 to 25.0 ℃
JECFA Number :1210
InChIKey :JJYWRQLLQAKNAD-SNAWJCMRSA-N
LogP :1.89
CAS DataBase Reference :3142-72-1(CAS DataBase Reference)
NIST Chemistry Reference :2-Pentenoic acid, 2-methyl-(3142-72-1)
EPA Substance Registry System :2-Pentenoic acid, 2-methyl- (3142-72-1)

Symbol(GHS):
Signal word:	Danger
Hazard statements:	Code Hazard statements Hazard class Category Signal word Pictogram P-Codes 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:	P260 Do not breathe dust/fume/gas/mist/vapours/spray. P280 Wear protective gloves/protective clothing/eye protection/face protection. P301+P330+P331 IF SWALLOWED: Rinse mouth. Do NOT induce vomiting. 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.