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4-Ethynylphthalic Anhydride

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4-Ethynylphthalic Anhydride / CAS : 73819-76-8

Appearance White to Yellow to Orange powder or crystal UN -
HS 29420000 DG Class -
Synonyms 5-Ethynyl-2-Benzofuran-1,3-Dione; 5-Ethynylisobenzofuran-1,3-Dione; 1,3-Isobenzofurandione, 5-Ethynyl-; 5-Ethynyl-1,3-Dihydro-2-Benzofuran-1,3-Dione
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Properties

Summary

Formula
C10H4O3
Molecular Mass
172.13700
Exact Mass
172.01600
PSA
43.37000
Logp
0.97850
IUPAC
5-ethynyl-2-benzofuran-1,3-dione
SMILES
C#CC1=CC2=C(C=C1)C(=O)OC2=O

Attribute classification

Matter Classification
organic
Category
API & Intermediate > Pharmaceutical Intermediates

Chemical and Physical Properties

Melting Point
125ºC
Density
1.41g/cm3
Boiling Point
352.4ºC at 760 mmHg
Flash Point
175.6ºC
Appearance
White to Yellow to Orange powder or crystal

Export information

HS Code
29420000
Export Rebate
13%
Risk Code
36/37/38

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