Basic information
CAS NO
2892-51-5
EINECS
220-761-4
Molecular Formula
C4H2O4
Molecular Weight
114.0563
English Name
3,4-Dihydroxy-3-cyclobutene-1,2-dione
Synonyms
Squaric acid, 3,4-dihydroxycyclobut-3-ene-1,2-dione, 4-hydroxycyclobutane-1,2,3-trione, 1,2-Dihydroxycyclobutene-3,4-dione, 3,4-dihydroxy-3-cyclobutene-2-dione
Physical and Chemical Properties
Density
1.985g/cm3
Refractive index
1.629
Melting point
293℃
Boiling point
299.7°C at 760 mmHg
Flash point
149.3°C
Water Solubility
20 g/L (30℃)
Vapour Pressure
0.000117mmHg at 25°C
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