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1,2,3,5-Tetrachlorobenzene

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1,2,3,5-Tetrachlorobenzene Basic information
1,2,3,5-Tetrachlorobenzene Chemical Properties
  • Melting point:54.5°C
  • Boiling point:246°C
  • Density 1.5578 (estimate)
  • vapor pressure 0.07 at 25 °C (extrapolated, Mackay et al., 1982)
  • refractive index 1.5348 (estimate)
  • Flash point:113 °C
  • storage temp.  APPROX 4°C
  • solubility Soluble in alcohol, benzene, ether, and ligroin (Weast, 1986)
  • form neat
  • Water Solubility 4.016mg/L(25 ºC)
  • BRN 1618864
  • Henry's Law Constant58.0 at 25 °C (gas stripping-GC, Shiu and Mackay, 1997)
  • CAS DataBase Reference634-90-2(CAS DataBase Reference)
  • NIST Chemistry ReferenceBenzene, 1,2,3,5-tetrachloro-(634-90-2)
  • EPA Substance Registry System1,2,3,5-Tetrachlorobenzene (634-90-2)
Safety Information
MSDS
1,2,3,5-Tetrachlorobenzene Usage And Synthesis
  • DefinitionChEBI: A tetrachlorobenzene carrying chloro groups at positions 1, 2, 3 and 5.
  • General DescriptionWhite crystals or off-white solid.
  • Air & Water ReactionsInsoluble in water.
  • Reactivity ProfileSimple aromatic halogenated organic compounds, such as 1,2,3,5-Tetrachlorobenzene , are very unreactive. Reactivity generally decreases with increased degree of substitution of halogen for hydrogen atoms. Materials in this group may be incompatible with strong oxidizing and reducing agents. Also, they may be incompatible with many amines, nitrides, azo/diazo compounds, alkali metals, and epoxides. 1,2,3,5-Tetrachlorobenzene may react with oxidizers. .
  • Health HazardACUTE/CHRONIC HAZARDS: 1,2,3,5-Tetrachlorobenzene may cause irritation on contact.
  • Fire Hazard1,2,3,5-Tetrachlorobenzene is probably combustible.
  • Environmental FateBiological. A mixed culture of soil bacteria or a Pseudomonas sp. transformed 1,2,3,5-tetrachlorobenzene to 2,3,4,6-tetrachlorophenol (Ballschiter and Scholz, 1980). The half-life of 1,2,3,5- tetrachlorobenzene in an anaerobic enrichment culture was 1.8 d (Beurskens et al., 1993).
    In an enrichment culture derived from a contaminated site in Bayou d’Inde, LA, 1,2,3,5- tetrachlorobenzene underwent reductive dechlorination to 1,2,4- and 1,3,5-trichlorobenzene at relative molar yields of 7 and 93%, respectively. The maximum dechlorination rate, based on the recommended Michaelis-Menten model, was 94 nM/d (Pavlostathis and Prytula, 2000).
    Photolytic. Irradiation (λ ≥285 nm) of 1,2,3,5-tetrachlorobenzene (1.1–1.2 mM/L) in an acetonitrile-water mixture containing acetone (0.553 mM/L) as a sensitizer gave the following products (% yield): 1,2,3-trichlorobenzene (5.3), 1,2,4-trichlorobenzene (4.9), 1,3,5-trichlorobenzene (49.3), 1,3-dichlorobenzene (1.8), 2,3,4,4′,5,5′,6-heptachlorobiphenyl (1.41), 2,2′,3,4,4′,6,6′- heptachlorobiphenyl (1.10), 2,2′,3,3′,4,5′,6-heptachlorobiphenyl (4.50), four hexachlorobiphenyls (4.69), one pentachlorobiphenyl (0.64), trichloroacetophenone, 1-(trichlorophenyl)-2-propanone, and (trichlorophenyl)acetonitrile (Choudhry and Hutzinger, 1984). Without acetone, the identified photolysis products (% yield) included 1,2,3-trichlorobenzene (trace), 1,2,4-trichlorobenzene (24.3), 1,3,5-trichlorobenzene (11.7), 1,3-dichlorobenzene (0.5), 1,4-dichlorobenzene (3.3), pentachlorobenzene (1.43), 1,2,3,4-tetrachlorobenzene (5.99), two heptachlorobiphenyls (1.40), two hexachlorobiphenyls (<0.01), and one pentachlorobiphenyl (0.75) (Choudhry and Hutzinger, 1984).
  • Purification MethodsCrystallise it from EtOH. [Beilstein 5 II 157, 5 III 551, 5 IV 668.]
1,2,3,5-Tetrachlorobenzene Preparation Products And Raw materials
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