Hexachlorobutadiene

Hexachlorobutadiene, (often abbreviated as "HCBD") Cl2C=C(Cl)C(Cl)=CCl2, is a colorless liquid at room temperature that has an odor similar to that of turpentine. It is a chlorinated aliphatic diene with niche applications but is most commonly used as a solvent for other chlorine-containing compounds. Structurally, it has a 1,3-butadiene core, but fully substituted with chlorine atoms.

Hexachlorobutadiene
Names
IUPAC name
Hexachloro-1,3-butadiene
Other names
HCBD, HCDB, Perchlorobutadiene, perchloro-1,3-butadiene, tripen
Identifiers
3D model (JSmol)
ChEMBL
ChemSpider
ECHA InfoCard 100.001.605
KEGG
UNII
  • InChI=1S/C4Cl6/c5-1(3(7)8)2(6)4(9)10 Y
    Key: RWNKSTSCBHKHTB-UHFFFAOYSA-N Y
  • InChI=1/C4Cl6/c5-1(3(7)8)2(6)4(9)10
    Key: RWNKSTSCBHKHTB-UHFFFAOYAT
  • Cl/C(Cl)=C(\Cl)C(\Cl)=C(/Cl)Cl
Properties
C4Cl6
Molar mass 260.74 g·mol−1
Appearance Colorless liquid
Odor Mild, turpentine-like
Density 1.665 g/mL at 25 °C
Melting point −22 – −19 °C (−8 – −2 °F; 251–254 K)
Boiling point 210–220 °C (410–428 °F; 483–493 K)
Insoluble
Vapor pressure 0.2 mmHg (20 °C)
Hazards
Occupational safety and health (OHS/OSH):
Main hazards
 carcinogen
NIOSH (US health exposure limits):
PEL (Permissible)
 none
REL (Recommended)
 Ca TWA 0.02 ppm (0.24 mg/m3) [skin]
IDLH (Immediate danger)
 Ca [N.D.]
Safety data sheet (SDS) Sigma Aldrich
Hazards
NFPA 704 (fire diamond)
3
1
0
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Y verify (what is YN ?)
Infobox references
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