3,4-Dichlorocyclobutene-1,2-dione

Names

[ CAS No. ]:
2892-63-9

[ Name ]:
3,4-Dichlorocyclobutene-1,2-dione

[Synonym ]:
3,4-dichlorocyclobut-3-ene-1,2-dione

Chemical & Physical Properties

[ Density]:
1.74g/cm3

[ Boiling Point ]:
175.6ºC at 760mmHg

[ Molecular Formula ]:
C4Cl2O2

[ Molecular Weight ]:
150.94800

[ Exact Mass ]:
149.92800

[ PSA ]:
34.14000

[ LogP ]:
0.82740

[ Vapour Pressure ]:
1.14mmHg at 25°C

[ Index of Refraction ]:
1.556

Safety Information

[ HS Code ]:
2914700090

Synthetic Route

Click to get detail synthetic route

Precursor & DownStream

Precursor

  • Squaric acid
  • Oxalyl chloride
  • 2-Cyclobuten-1-one,2,3,4,4-tetrachloro-

DownStream

  • 3-[4-(dimethylamino)phenyl]-4-hydroxycyclobut-3-ene-1,2-dione
  • 3-chloro-4-[4-(dimethylamino)phenyl]cyclobut-3-ene-1,2-dione
  • 1,4-BIS(TRIMETHYLSILYL)-1,3-BUTADIYNE
  • 3,4-bis[(trimethylsilyl)ethynyl]-3-cyclobutene-1,2-dione
  • 3,4-DI(CYCLOHEXYLAMINO)CYCLOBUT-3-ENE-1,2-DIONE
  • 3-[4-(dibutylamino)phenyl]-4-hydroxycyclobut-3-ene-1,2-dione
  • 3-Chloro-4-isopropoxycyclobut-3-ene-1,2-dione
  • 3-chloro-4-ethylsulfanylcyclobut-3-ene-1,2-dione
  • butadiyne, diphenyl-

Customs

[ HS Code ]: 2914700090

[ Summary ]:
HS: 2914700090 halogenated, sulphonated, nitrated or nitrosated derivatives of ketones and quinones, whether or not with other oxygen function Tax rebate rate:9.0% Supervision conditions:none VAT:17.0% MFN tariff:5.5% General tariff:30.0%

Related Compounds

  • 3,4-diphenyl-cyclobutane-1,2-dione
  • 3,4-dimethylcyclobut-3-ene-1,2-dione
  • 3,4-DIAMINOCYCLOBUT-3-ENE-1,2-DIONE
  • 3,4-dipropoxycyclobut-3-ene-1,2-dione
  • 3,4-dipentoxycyclobut-3-ene-1,2-dione
  • 3,4-dihydroxycyclobut-3-ene-1,2-dione,methanamine