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4-?????

4-?????
4-????? ??? ???
?? ??:
591-80-0
???:
4-?????
???:
Allylacetic acid
???(??):
PENT-4-ENOIC ACID;4-PENTYNOIC ACID;4-PENTENOIC ACID;PROPARGYLACETIC ACID;4 PA;FEMA 2843;4-Pentensαure;PENT-4-ENOATE;AUYLACETICACID;Anulacetic acid
CBNumber:
CB6264516
???:
C5H8O2
??? ??:
100.12
MOL ??:
591-80-0.mol
MSDS ??:
SDS

4-????? ??

???
-22.5 °C (lit.)
?? ?
83-84 °C/12 mmHg (lit.)
??
0.981 g/mL at 25 °C (lit.)
?? ??
>1 (vs air)
???
n20/D 1.428(lit.)
FEMA
2843 | 4-PENTENOIC ACID
???
193 °F
?? ??
2-8°C
???
?????, ???? ???
??? ??
??
?? ?? (pKa)
pK1:4.677 (25°C)
Specific Gravity
0.981
??
????~???
??
???? ??? ? 0.10%. ?? ??? ??? ???
?? ??
???? ??
???? ??
synthetic
????
1.58%(V)
???
???? ???, ?? ?? ???
JECFA Number
314
BRN
1633696
InChIKey
HVAMZGADVCBITI-UHFFFAOYSA-N
LogP
0.99
CAS ??????
591-80-0(CAS DataBase Reference)
NIST
4-Pentenoic acid(591-80-0)
EPA
4-Pentenoic acid (591-80-0)
??
  • ?? ? ?? ??
  • ?? ? ???? ?? (GHS)
??? ?? C,T
?? ???? ?? 34-22
????? 26-36/37/39-45
????(UN No.) UN 3261 8/PG 2
WGK ?? 3
RTECS ?? SC4751000
F ?????? 8-10-23
TSCA T
?? ?? 8
???? III
HS ?? 29161980
?? LD50 oral in rat: 470mg/kg
???? ?? KE-28038
????(GHS): GHS hazard pictogramsGHS hazard pictograms
?? ?: Danger
??·?? ??:
?? ??·?? ?? ?? ?? ?? ?? ? ?? ?? P- ??
H302 ??? ??? ?? ?? ?? - ?? ?? 4 ?? GHS hazard pictograms P264, P270, P301+P312, P330, P501
H314 ??? ?? ??? ?? ??? ??? ????? ?? ????? ?? 1A, B, C ?? GHS hazard pictograms P260,P264, P280, P301+P330+ P331,P303+P361+P353, P363, P304+P340,P310, P321, P305+ P351+P338, P405,P501
??????:
P280 ????/???/???/?????? ?????.
P301+P330+P331 ???? ?? ?????. ??? ?? ?? ???.
P303+P361+P353 ??(?? ????)? ??? ??? ?? ??? ??? ????? ??? ?? ????/?????.
NFPA 704
2
3 0

4-????? MSDS


Pent-4-enoic acid

4-????? C??? ??, ??, ??

??? ??

clear colorless to light yellow liquid

??

Sulfonation yields the corresponding γ-lactone.1

?? ??

By decarboxylation via heating allylmalonic acid; from the corresponding ethyl ester prepared by boiling ethyl 4-chloron- valerate in quinoline.

??

ChEBI: A pentenoic acid having the double bond at position 4.

?? ??

4-Pentenoic acid is a volatile acid reported to be found in tobacco.

Safety Profile

Poison by subcutaneous and intraperitoneal routes. Moderately toxic by ingestion. When heated to decomposition it emits acrid smoke and irritating fumes.

4-????? ?? ?? ? ???

???

Cyclopropylacetic acid (Bromomethyl)cyclopropane 4-Penten-1-ol 4???

?? ??

???? ???????? 3-??-6-????? 5-?????-????-2-? 5-Hexen-2-one, 1-phenyl- tert-????-4-????? 6-????????? SC-52012

4-????? ?? ??

???( 340)?? ??
??? ?? ??? ?? ?? ? ??
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4-????? ?? ??:

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