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But-2-En-4-Olide

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But-2-En-4-Olide / CAS : 497-23-4

Appearance Transparent colorless to light yellow or amber liquid UN 0
HS 29420000 DG Class 0
Synonyms Furan-2(5H)-One; 2H-Furan-5-One; γ-Crotonolactone; 2-Oxo-2,5-Dihydrofuran; 2(5H)-Furanone; .Alpha.,.Beta.-Crotonolactone; γ-Crotonolactone, 2-Buten-1,4-Olide; 2,5-Dihydrofuranone; 5-Oxo-2,5-Dihydrofuran-3-Yl Ester; A,B-Crotonolactone; Crotonic Acid, 4-Hydroxy-; 2,5-Dihydrofuran-2-One; 2(5H)-Furanone,γ-Crotonolactone, 2-Buten-1,4-Olide
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Properties

Summary

Formula
C4H4O2
Molecular Mass
84.07340
Exact Mass
84.02110
PSA
26.30000
Logp
0.09940
IUPAC
2H-furan-5-one
SMILES
C1C=CC(=O)O1

Attribute classification

Matter Classification
organic
Category
API & Intermediate > Pharmaceutical Intermediates

Chemical and Physical Properties

Melting Point
4-5 °C(lit.)
Density
1.185 g/mL at 25 °C(lit.)
Boiling Point
86-87 °C12 mm Hg(lit.)
Flash Point
214 °F
Appearance
Transparent colorless to light yellow or amber liquid

Export information

HS Code
29420000
Export Rebate
13%
UN No.
0
DG-Class
0
Risk Code
R36/37/38
Safety Label
Xi

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