Hexachlorobutadiene

• Hexachloro- 1 ,3-butadiene
• Perchlorobutadiene
• Hexachlorbutatien
• Tripen
• HCBD

Colorless liquid with a mild odor

Liquid

1.68 g · cm -3

-21 ° C.

215 ° C

36 Pa ( 20 ° C)

Poorly in water ( 0.5 g · l-1 at 20 ° C)

Risk

-24.5 KJ / mol

Template: Infobox chemical / molecular formula search available

Hexachlorbuta -1 ,3-diene is a chemical compound from the group of unsaturated aliphatic halogenated hydrocarbons, and organic chlorine compounds.

Properties

Hexachlorobutadiene is a toxic, bioaccumulative organic compound which exists as a colorless liquid with a mild odor. It is no longer manufactured in Germany and the EU, and also not used in Germany. It can, however, as a by - product or waste from some chemical production and combustion processes occur (eg in the synthesis of organic halogen compounds such as tetrachlorethylene, trichlorethylene or carbon tetrachloride by chlorolysis ) and is detectable due to its relatively high vapor pressure in the environment. Classified under the Water Framework Directive as a priority hazardous, since it (eg in the area of industrial plants ) is also detectable in the groundwater. According to the results of the European emission inventory, the bulk of the emissions reported in the field of organic basic chemicals.

Use

Was Hexachlorbuta -1 ,3-diene as a hydraulic fluid, solvents for elastomers, heat transfer fluid, coolant in transformers, fluid for gyroscopes, adsorbents for gas contamination, biocide to prevent the growth of algae (industrial water reservoirs and cooling water systems ) as well as in some EU countries as pesticides in viticulture be used. Furthermore, it was used as an intermediate in the production of fluorine-containing lubricants and rubber compounds.

An exemplary example of using hexachlorobutadiene as solvent is the FeCl3 -catalyzed chlorination of toluene to make Pentachlortoluol.

Safety

Hexachlorbuta -1 ,3-diene 3 (substances which owing to possible carcinogenic effects in humans cause for concern ) classified as Carcinogenic EC category. In the pyrolysis of Hexachlorbuta -1 ,3-diene, toxic combustion products form including dioxins.

Proof

The proof is based on liquid / liquid extraction process in the original sample by purge & trap - enrichment and subsequent GC / MS analysis.