Solvents
REACH
Hexachlorobutadiene
CAS Number
87-68-3
EC Number
201-765-5
What is Hexachlorobutadiene?
Hexachlorobutadiene (CAS 87-68-3), commonly referred to as HCBD, is a dense chlorinated solvent historically used in industrial cleaning and chemical processing operations.
Where is Hexachlorobutadiene used?
- Solvent for other chlorine-containing compounds in high-temperature or chemically aggressive environments
- Oil and gas processing: recovery of chlorine-containing byproducts from chlorinated solvent production
- Legacy agriculture: fumigant and grain protectant
- Lubricants and metalworking: candidate for specialized hydraulic fluids and heat transfer media
- Gas scrubbing: wash liquid removing impurities from chlorine-based process streams
- It has been used to recover chlorine-containing byproducts such as trichloroethylene and tetrachloroethylene.
Good to know: Regulatory restrictions have significantly curtailed fumigant use in modern industrial settings. Buyers should verify current import, export, and handling regulations, as HCBD is subject to restrictions under international chemical conventions in multiple global jurisdictions.
Commercial specifications
- Typically offered in drums or bulk quantities
Other Names (Synonyms)
HCBD|1,3-Hexachlorobutadiene|Hexachloro-1,3-butadiene|Hexachlorobuta-1,3-diene|1,1,2,3,4,4-hexachlorobuta-1,3-diene|Dolen-pur|1,3-Butadiene, 1,1,2,3,4,4-hexachloro-|Butadiene, hexachloro-
What are the physical properties of Hexachlorobutadiene?
Melting Point -21 °C
Boiling Point 215 °C @ Press: 760 Torr
Density 1.556 g/cm³ @ Temp: 25 °C
Flash Point 210-220°C
Appearance Hexachlorobutadiene is a clear, colorless liquid with a faint, turpentine-like odor.
Odor faint turpentine odor
Form neat
Water Solubility (mg/L): 4.78 at 25 °C (shake flask-LSC, Banerjee et al., 1980) 4 at 20–25 °C (Geyer et al., 1980)
Vapor Pressure 0.2 mm Hg ( 20 °C)
Refractive Index n 20/D 1.555(lit.)
How is Hexachlorobutadiene classified and handled safely? Learn More
Danger
GHS05· Corrosive GHS06· Toxic GHS07· Irritant GHS08· Health Hazard GHS09· Environmental Hazard
Hazard Statements
H227 Combustible liquid
H301 Toxic if swallowed
H302 Harmful if swallowed
H310 Fatal in contact with skin
Precautionary Statements
P203 Obtain, consult and follow expert instructions for use.
P210 Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.
P260 Do not breathe dust/fume/gas/mist/vapours/spray.
P261 Avoid breathing dust/fume/gas/mist/vapours/spray.
Which trade and regulatory codes apply to Hexachlorobutadiene?
HS Code 29032990
UN Number 2279
ADR Class 6.1
Packing Group III
Storage Class 6.1A - Combustible acute toxic Cat. 1 and 2
very toxic hazardous materials
WGK (Germany) 3