English name: squaric acid dibutyl ester

 English alias:1,2-dibutyl squarate;

3,4-Dibutoxy-3-cyclobutene-1,2-dione;

3,4-di-n-Butoxy-3-cyclobutene-1,2-dione;

3,4-Dibutoxycyclobut-3-ene-1,2-dione;

Dibutyl squarate;

CAS No. 2892-62-8

Molecular formula: C12H18O4

Molecular weight: 226.26900

Appearance and properties: transparent yellowish liquid

Density: 1.047 g/mL at 25 degree C (lit.)

Boiling point: 139 degree C 0.5 mm Hg (lit.)

Flash point: > 230 degrees F refractive index: n20/D 1.494 (lit.)

Steam pressure: 3.64E-05mmHg at 25 degree C