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2-Chlorobenzoic acid

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2-Chlorobenzoic acid Basic information
2-Chlorobenzoic acid Chemical Properties
  • Melting point:138-140 °C(lit.)
  • Boiling point:285 °C
  • Density 1.544
  • vapor pressure 0.001 hPa (25 °C)
  • refractive index 1.5812 (estimate)
  • Flash point:173 °C
  • storage temp. room temp
  • solubility cold water: soluble900 part
  • pka2.92(at 25℃)
  • form Powder
  • color White to off-white
  • PH3.4 (0.2g/l, H2O, 20℃)
  • Water Solubility soluble in hot water
  • Merck 14,2124
  • BRN 907340
  • Stability:Stable, combustible. Incompatible with strong bases, strong oxidizing agents.
  • InChIKeyIKCLCGXPQILATA-UHFFFAOYSA-N
  • CAS DataBase Reference118-91-2(CAS DataBase Reference)
  • NIST Chemistry ReferenceBenzoic acid, 2-chloro-(118-91-2)
  • EPA Substance Registry Systemo-Chlorobenzoic acid (118-91-2)
Safety Information
  • Hazard Codes Xi
  • Risk Statements 36-36/37/38
  • Safety Statements 26-37/39
  • WGK Germany 2
  • RTECS DG4976000
  • Autoignition Temperature530 °C
  • Hazard Note Irritant
  • TSCA Yes
  • HS Code 29163900
  • Hazardous Substances Data118-91-2(Hazardous Substances Data)
  • ToxicityLD50 orally in Rabbit: 2465 mg/kg
MSDS
  • Language:EnglishProvider:OCBA
  • Language:EnglishProvider:ACROS
  • Language:EnglishProvider:SigmaAldrich
  • Language:EnglishProvider:ALFA
2-Chlorobenzoic acid Usage And Synthesis
  • Chemical Propertieswhite crystals or powder
  • UsesThe toxicity of halogenated benzoic acids was found to be directly related to the compound's hydrophobicity. Toxicity and quantitative structure-activity relationships of benzoic acids to Pseudokirchn eriella subcapitata.
  • UsesPreservative for glues, paints. Intermediate in the manufacture of fungicides and dyes.
  • DefinitionChEBI: A monochlorobenzoic acid having the chloro group at the 2-position.
  • Synthesis Reference(s)The Journal of Organic Chemistry, 44, p. 1247, 1979 DOI: 10.1021/jo01322a012
    Tetrahedron Letters, 35, p. 1539, 1994 DOI: 10.1016/S0040-4039(00)76752-9
  • General DescriptionCrystals or fine fluffy white powder.
  • Air & Water ReactionsInsoluble in water.
  • Reactivity Profile2-Chlorobenzoic acid is incompatible with strong oxidizing agents and strong bases.
  • Fire HazardFlash point data for 2-Chlorobenzoic acid are not available; however, 2-Chlorobenzoic acid is probably combustible.
  • Purification MethodsCrystallise the acid successively from glacial acetic acid, aqueous EtOH, and pet ether (b 60-80o). Other solvents include hot water or toluene (ca 4mL/g). The crude material can be initially purified by dissolving 30g in 100mL of hot water containing 10g of Na2CO3, boiling with 5g of charcoal for 15minutes, then filtering and adding 31mL of 1:1 aqueous HCl. The precipitate is washed with a little water and dried at 100o. [Beilstein 9 IV 956.]
2-Chlorobenzoic acid Preparation Products And Raw materials
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