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2,4-Dinitrochlorobenzene

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2,4-Dinitrochlorobenzene Basic information
2,4-Dinitrochlorobenzene Chemical Properties
  • Melting point:48-50 °C(lit.)
  • Boiling point:315 °C(lit.)
  • Density 314
  • vapor density 6.98 (vs air)
  • vapor pressure 1 hPa (106 °C)
  • refractive index 1.5857
  • Flash point:367 °F
  • storage temp. Store below +30°C.
  • solubility alcohol: very slightly soluble (cold)(lit.)
  • form Crystalline Mass, Chunks or Crystals and Powder
  • color Yellow to brown
  • OdorAlmond-like
  • explosive limit1.9-22%(V)
  • Water Solubility insoluble
  • Merck 14,2136
  • BRN 613161
  • Stability:Stable. Combustible. Incompatible with strong oxidizing agents, ammonia. Reacts violently with hydrazine hydrate.
  • CAS DataBase Reference97-00-7(CAS DataBase Reference)
  • NIST Chemistry ReferenceBenzene, 1-chloro-2,4-dinitro-(97-00-7)
  • EPA Substance Registry System2,4-Dinitrochlorobenzene (97-00-7)
Safety Information
MSDS
2,4-Dinitrochlorobenzene Usage And Synthesis
  • Chemical Propertiesyellow crystals with an almond odour
  • Uses1-Chloro-2,4-dinitrobenzene is a benzene derivative and is used in biochemical research as a substrate for glutathione S-transferase.
  • DefinitionChEBI: A C-nitro compound that is chlorobenzene carrying a nitro substituent at each of the 2- and 4-positions.
  • General DescriptionPale yellow needles, almond odor.
  • Reactivity ProfileSelf-reactive, [Halpern, Chem. and Eng. News, 29:2666(1951)]. The mixture of 2,4-Dinitrochlorobenzene with hydrazine hydrate caused a violent reaction.
  • HazardToxic by ingestion, inhalation, and skin absorption. Combustible. Upper explosive limit 22%. A skin irritant.
  • Health HazardTOXIC; inhalation, ingestion or skin contact with material may cause severe injury or death. Contact with molten substance may cause severe burns to skin and eyes. Avoid any skin contact. Effects of contact or inhalation may be delayed. Fire may produce irritating, corrosive and/or toxic gases. Runoff from fire control or dilution water may be corrosive and/or toxic and cause pollution.
  • Fire HazardCombustible material: may burn but does not ignite readily. When heated, vapors may form explosive mixtures with air: indoors, outdoors and sewers explosion hazards. Contact with metals may evolve flammable hydrogen gas. Containers may explode when heated. Runoff may pollute waterways. Substance may be transported in a molten form.
  • Contact allergensThis substance is one of the strongest primary skin irritants known, and a universal contact allergen. Occupational dermatitis has been reported, but current use is decreasing or performed with completely closed systems. DNCB is sometimes used for topical treatment of alopecia areata, severe warts, and cutaneous metastasis of malignant melanoma
  • Safety ProfilePoison by skin contact and intraperitoneal routes. Moderately toxic by ingestion. A severe human skin and eye irritant. Acts as a primary irritant as well as a sensitizer of skin. An allergen. Mutation data reported. Combustible when exposed to heat or flame. A moderate explosion hazard when exposed to flame, sparks, heated to 1 50°, or when shocked in a sealed container. Explosive reaction with ammonia at 17O℃/40 bar. To fight fire, use CO2, dry chemical. Reacts violently with hydrazine sulfate or hydrazine hydrate. See also NITRO COMPOUNDS of AROMATIC HYDROCARBONS.
  • Purification MethodsUsually it is recrystallised from EtOH or MeOH. It has also been crystallised from Et2O, *C6H6, *C6H6/pet ether or isopropyl alcohol. A preliminary purification step is to pass its solution in *benzene through an alumina column. It has also been purified by zone refining. It exists in three forms: one stable and two unstable. The stable form crystallises as yellow needles from Et2O, m 51o, b 315o/760mm with some decomposition, and is soluble in EtOH. A labile form also crystallises from Et2O, m 43o, and is more soluble in organic solvents. The second labile form has m 27o. [Hoffman & Dame, J Am Chem Soc 41 1015 1919, Welsh J Am Chem Soc 63 3276 1941, J Chem Soc 2476 1957, Beilstein 5 IV 744.]
2,4-Dinitrochlorobenzene Preparation Products And Raw materials
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