isobutyl 2-butenoate

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2-methylpropyl but-2-enoate

Identifiers

FEMA 3432
CAS 589-66-2
EINECS 209-658-5
Synonyms
  • 2- butenoic acid 2-methyl propyl ester
  • 2- butenoic acid 2-methylpropyl ester
  • 2- butenoic acid, 2-methylpropyl ester
  • iso butyl 2-butenoate (crotonate)
  • iso butyl but-2-enoate
  • iso butyl crotonate
  • iso butyl-2-butenoate
  • iso- butyl-crotonate FCC
  • crotonic acid isobutyl ester
  • 2- methyl propyl 2-butenoate
  • 2- methyl propyl crotonate
  • 2- methylpropyl but-2-enoate
JECFA Food Flavoring 1206
JECFA Food Additive N/A
DG SANTE Food Flavourings 09.273 isobutyl crotonate
DG SANTE Food Contact Materials N/A
FDA UNII
CoE Number 10706
XlogP3-AA N/A
Molecular Weight 142.19798
Molecular Formula C8 H14 O2

Organoleptic

Organoleptic Notes
  • 1. Odor Type: fruity Odor Strength:medium
  • Substantivity:137 hour(s) at 100.00 %
  • fruity dry tropical rummy ripe green pear caramellic
  • Odor Description:at 100.00 %. fruity dry tropical rummy ripe green pear (caramellic is the long drydown)Luebke, William tgsc, (1996)
  • Odor sample from: Florida Chemical Company
  • woody fruity brown ripe alcoholic cognac rummy
  • Odor Description:Woody, fruity, brown, ripe and alcoholic-like with cognac and rum nuancesMosciano, Gerard P&F 20, No. 6, 49, (1995)
Odor fruity
fruity, dry, tropical, rummy, ripe, green, pear, caramellic, woody, brown, alcoholic, cognac
Flavor green
sweet, green, chemical, alcoholic, licorice, tropical, fruity,

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Properties

Food Chemicals Codex Listed Yes
Appearance colorless clear liquid (est)
Assay 95.00 to 100.00
Specific Gravity 0.88300 to 0.89100 @ 25.00 °C.
Lbs/Gal (est) 7.347 to 7.414
Refractive Index 1.42600 to 1.43000 @ 20.00 °C.
Melting Point N/A
Boiling Point 171.00 °C. @ 760.00 mm Hg
Flash Point 131.00 °F. TCC ( 55.00 °C. )
Acid Value N/A
Vapor Pressure 1.788000 mmHg @ 25.00 °C. (est)
Vapor Density 4.6 ( Air = 1 )
logP (o/w) 2.669 (est)
Soluble In
  • alcohol
  • fixed oils
  • propylene glycol
  • water, slightly
  • water, 555.2 mg/L @ 25 °C (est)
  • water
Occurrence
  • grape