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2-Methyl-2-pentenoic acid Structure

2-Methyl-2-pentenoic acid

Chemical Properties

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)
Substances Added to Food (formerly EAFUS) 2-METHYL-2-PENTENOIC ACID
FDA UNII 44I99E898B
NIST Chemistry Reference 2-Pentenoic acid, 2-methyl-(3142-72-1)
EPA Substance Registry System 2-Pentenoic acid, 2-methyl- (3142-72-1)

Safety

Symbol(GHS)
Signal wordDanger
Hazard statements H314
Precautionary statements P260-P280-P301+P330+P331-P303+P361+P353-P304+P340+P310-P305+P351+P338
Hazard Codes  C
Risk Statements  34-22-41
Safety Statements  26-36/37/39-45
RIDADR  UN 3261 8/PG 3
WGK Germany  2
TSCA  Yes
HazardClass  8
PackingGroup  III
HS Code  29161900
NFPA 704:
0
3 0

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