ethyl (E)-2-crotonate
 
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IUPAC name :ethyl (E)-but-2-enoate
InChI :InChI=1/C6H10O2/c1-3-5-6(7)8-4-2/h3,5H,4H2,1-2H3/b5-3+
InChIKey :ZFDIRQKJPRINOQ-HWKANZROBY
SMILES :CCOC(=O)\C=C\C
(EINECS) number :210-808-7
cas number :623-70-1
beilstein number :0635834
fema number :3486
coe number :2244
fl. number :09.248
molar refractivity :31.67 ± 0.3 cm3
parachor :282.8 ± 4.0 cm3
index of refraction :1.421 ± 0.02
surface tension :26.4 ± 3.0 dyne/cm
density :0.915 ± 0.06 g/cm3
polarizability :12.55 ± 0.5 10-24cm3
xlogp : 1.50
molecular weight : 114.1424000
formula :C6 H10 O2
 
 
fda reg :172.515 h. number :unspecified
organoleptics : 
odor type :chemical
odor strength :medium ,
recommend smelling in a 10.00 % solution or less
odor description :
at 10.00 % in dipropylene glycol.  
pungent chemical diffusive sweet allicious caramel rum
taste description³ :at 10.00 ppm.  
Musty, onion and garlic, caramellic and brown notes
properties : 
appearence :colorless to pale yellow clear liquid
assay : 99.00 - 100.00 %   
Food Chemicals Codex Listed :No
specific gravity :0.91300 - 0.92000 @ 25.00 °C.
pounds per gallon - calc. : 7.597 to 7.655
refractive index :1.42200 - 1.42700 @ 20.00 °C.
boiling point : 142.00 - 143.00 °C. @ 760.00 mm Hg
acid value : 1.00  max.  KOH/g
logp : 1.63
safety : 
most important hazard(s) : Xi - Irritant
  
Oral Toxicity(LD50) : Oral-Rat    3.00  gm/kg    
Dermal Toxicity(LD50) : Skin-Guineapig  >5.00  gm/kg    
  
flash point ( Deg. F. ) : 36.00  °F.  TCC  ( 2.22 °C. )
  
recommendation for ethyl (E)-2-crotonate usage levels up to :
  4.0000 % in the fragrance concentrate.
  
recommendation for ethyl (E)-2-crotonate usage levels up to :
  10.0000 ppm in the flavor.
  
safety links : 
(EINECS) number :210-808-7
chemidplus :000623701
epa-srs :623-70-1
  
other : 
 
references : 
pubchem :155510
NIST Chemistry WebBook :239484267
  
reference : Mosciano, Gerard P&F 15, No. 2, 69, (1990)³
synonyms :
(E)-2-butenoic acid ethyl ester
trans-2-butenoic acid ethyl ester
(E)-crotonic acid ethyl ester
(E)-alpha-crotonic acid ethyl ester
 ethyl (E)-2-butenoate
 ethyl (E)-2-crotonate
(E)-ethyl 2-butenoate
 ethyl alpha-crotonate
 ethyl trans-2-butenoate
soluble in :
 alcohol
 water, slightly
insoluble in :
 water
(odor and/or flavor) used in :
 apple
 butterscotch
 caramel
 chocolate cocoa
 cognac
 garlic
 grape
 onion
 papaya
 passion fruit
 pineapple
 rum
 strawberry
natural occurrence in :
apple
cocoa
grape concord grape
papaya
passion fruit
rum
data pagestar fruit oil cuba @ trace%
strawberry
wine



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