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??-2-???
??-2-??? ??? ???
?? ??:
497-03-0
???:
??-2-???
???(??):
??-2-???;??-2-???;???? ?????
???:
TRANS-2-METHYL-2-BUTENAL
???(??):
2-METHYL-2-BUTENAL;(E)-2-methylbut-2-enal;(E)-2-Methyl-2-butenal;TIGLALDEHYDE;FEMA 3407;tigaldehyde;Methylbutenal;TIGLINALDEHYDE;CH3CH=C(CH3)CHO;(E)-tiglaldehyde
CBNumber:
CB7276338
???:
C5H8O
??? ??:
84.12
MOL ??:
497-03-0.mol
MSDS ??:
SDS

??-2-??? ??

???
-101.15°C (estimate)
?? ?
116-119 °C752 mm Hg(lit.)
??
0.871 g/mL at 25 °C(lit.)
FEMA
3407 | 2-METHYL-2-BUTENAL
???
n20/D 1.448(lit.)
???
65 °F
?? ??
Flammables area
???
?????? ???
??? ??
??
??
??~???? ???
??
0.10?%?in?????? ?????. ?? ?? ??
???? ??
synthetic
???
?? ???
??
Air Sensitive
JECFA Number
1201
BRN
1698207
???
?? ???, ? ???
LogP
1.065 (est)
CAS ??????
497-03-0(CAS DataBase Reference)
EPA
trans-2-Methylcrotonaldehyde (497-03-0)
??
  • ?? ? ?? ??
  • ?? ? ???? ?? (GHS)
??? ?? F,Xi
?? ???? ?? 11-36/37/38-10
????? 16-26-36
????(UN No.) UN 1989 3/PG 2
WGK ?? 3
TSCA Yes
?? ?? 3
???? II
HS ?? 29121990
????(GHS): GHS hazard pictogramsGHS hazard pictograms
?? ?: Danger
??·?? ??:
?? ??·?? ?? ?? ?? ?? ?? ? ?? ?? P- ??
H225 ???? ?? ? ?? ??? ?? ?? 2 ?? GHS hazard pictograms P210,P233, P240, P241, P242, P243,P280, P303+ P361+P353, P370+P378,P403+P235, P501
H315 ??? ??? ??? ????? ?? ????? ?? 2 ?? GHS hazard pictograms P264, P280, P302+P352, P321,P332+P313, P362
H319 ?? ?? ??? ??? ?? ? ?? ?? ??? ?? ?? 2A ?? GHS hazard pictograms P264, P280, P305+P351+P338,P337+P313P
H335 ?? ???? ??? ? ?? ?? ???? ?? - 1? ??;???? ?? ?? 3 ?? GHS hazard pictograms
??????:
P210 ?·???·??·????? ????? - ?? ???.
P233 ??? ??? ?????. ??? ??? ? ?? ?? ??? ???? ?????.
P240 ??? ????? ?? ? ??????.
P241 ?? ??? ??[???/??/??/...]?(?) ?????.
P303+P361+P353 ??(?? ????)? ??? ??? ?? ??? ??? ????? ??? ?? ????/?????.
P305+P351+P338 ?? ??? ? ?? ?? ???? ????. ???? ?????? ?????. ?? ????.
NFPA 704
3
2 0

??-2-??? C??? ??, ??, ??

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2-Methyl-2-butenal has a penetrating, powerful green ethereal odor. May be prepared by condensation of acetaldehyde and propionaldehyde.

??? ??

trans-2-Methyl-2-butenal is a clear colorless to yellow liquid. B.P. 135℃. Sp.Gr. 0.87. Almost insoluble in water, soluble in alcohol and oils. Powerful and very diffusive, penetrating “gassy” odor of green-ethereal character. Very poor tenacity.

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Tiglic aldehyde was used in the concise total synthesis of 7-demethylpiericidin A1. It was used as starting reagent during the synthesis of:

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trans-2-Methyl-2-butenal is one of the major volatile constituents of coriander and olive oil.

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