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1,3,5-Trichlorobenzene

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1,3,5-Trichlorobenzene Basic information
1,3,5-Trichlorobenzene Chemical Properties
  • Melting point:63 °C
  • Boiling point:208 °C(lit.)
  • Density 1.4528 (estimate)
  • vapor pressure 0.58 at 25 °C (quoted, Mackay et al., 1982)
  • refractive index 1.5693 (estimate)
  • Flash point:260 °F
  • storage temp.  0-6°C
  • solubility Soluble in benzene, ether, ligroin (Weast, 1986), glacial acetic acid, carbon disulfide, and petroleum ether (Windholz et al., 1983)
  • form powder or crystals
  • form Crystals
  • Water Solubility Insoluble in water.
  • Merck 14,9632
  • BRN 1635233
  • Henry's Law Constant1.83, 2.04, 2.64, 4.49, and 5.24 at 2.0, 6.0, 10.0, 18.0, and 25.0 °C, respectively (EPICS-SPME, Dewulf et al., 1999)
  • Stability:Stable. Incompatible with acids, strong oxidizing agents.
  • CAS DataBase Reference108-70-3(CAS DataBase Reference)
  • NIST Chemistry ReferenceBenzene, 1,3,5-trichloro-(108-70-3)
  • EPA Substance Registry System1,3,5-Trichlorobenzene (108-70-3)
Safety Information
  • Hazard Codes Xn,Xi
  • Risk Statements 20/21/22-36/37/38-38-22-52/53
  • Safety Statements 26-36-36/37-61
  • RIDADR 3077
  • WGK Germany 3
  • RTECS DC2100100
  • Hazard Note Harmful/Irritant
  • TSCA Yes
  • HazardClass 9
  • PackingGroup III
  • HS Code 29039990
  • Hazardous Substances Data108-70-3(Hazardous Substances Data)
  • ToxicityDrinking water standard: No MCLGs or MCLs have been proposed, however, a DWEL of 200 μg/L was recommended (U.S. EPA, 2000).
MSDS
1,3,5-Trichlorobenzene Usage And Synthesis
  • Chemical Propertieswhite to beige crystalline powder
  • Uses1,3,5-Trichlorobenzene is used for someof these applications plus as a termite preparation and insecticide. These compounds are found as unintended by-products of the manufacture of the mono- and dichlorobenzenes.
  • General DescriptionWhite to off-white crystals.
  • Air & Water ReactionsInsoluble in water.
  • Reactivity ProfileCan react vigorously with oxidizing materials. .
  • Fire Hazard1,3,5-Trichlorobenzene is combustible.
  • Safety ProfileModerately toxic by ingestion and intraperitoneal routes. Mutation data reported. When heated to decomposition it emits toxic vapors of Cl-.
  • Environmental FateBiological. Under aerobic conditions, soil microbes degraded 1,3,5-trichlorobenzene to 1,3- and 1,4-dichlorobenzene and carbon dioxide (Kobayashi and Rittman, 1982). A mixed culture of soil bacteria or a Pseudomonas sp. transformed 1,3,5-trichlorobenzene to 2,4,6-trichlorophenol (Ballschiter and Scholz, 1980).
    In an enrichment culture derived from a contaminated site in Bayou d’Inde, LA, 1,3,5- trichlorobenzene underwent reductive dechlorination yielding 1,3-dichlorobenzene. The maximum dechlorination rate, based on the recommended Michaelis-Menten model, was 9.5 nM/d (Pavlostathis and Prytula, 2000).
    Photolytic. The sunlight irradiation of 1,3,5-trichlorobenzene (20 g) in a 100-mL borosilicate glass-stoppered Erlenmeyer flask for 56 d yielded 160 ppm pentachlorobiphenyl (Uyeta et al., 1976). A photooxidation half-life of 6.17 months was reported for the vapor-phase reaction of 1,3,5-trichlorobenzene with OH radicals (Atkinson, 1985).
  • Purification MethodsRecrystallise it from dry *benzene or toluene. [Beilstein 5 IV 666.]
1,3,5-Trichlorobenzene Preparation Products And Raw materials
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