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CAS No 118-75-2 , 2,3,5,6-tetrachlorocyclohexa-2,5-diene-1,4-dione

  • Name: 2,3,5,6-tetrachlorocyclohexa-2,5-diene-1,4-dione
  • Synonyms: Spergon;2,3,5,6-tetrachlorocyclohexa-2,5-diene-1,4-dione; Tetrachloro-1,4-benzoquinone; 118-75-2; Tetrachloro-p-benzoquinone; Khloranil; Coversan;p-Chloranil; Psorisan;
  • CAS Registry Number:
  • Transport: UN 3077
  • Melting Point: 289 ºC
  • Density: 1,97 g/cm3
  • Safety Statements: R20;R36/38;R50/53
  • Hazard Symbols: Xn: Harmful;N: Dangerous for the environment;
  • HS Code: 29147090
  • EINECS: 204-274-4
  • Molecular Weight: 245.875
  • InchiKey: UGNWTBMOAKPKBL-UHFFFAOYSA-N
  • InChI: InChI=1S/C6Cl4O2/c7-1-2(8)6(12)4(10)3(9)5(1)11
  • Risk Statements: S22;S37;S60;S61
  • Molecular Formula: C6Cl4O2
  • Molecular Structure:CAS No:118-75-2 2,3,5,6-tetrachlorocyclohexa-2,5-diene-1,4-dione

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References of 2,3,5,6-tetrachlorocyclohexa-2,5-diene-1,4-dione
Title: Chloranil
CAS Registry Number: 118-75-2
CAS Name: 2,3,5,6-Tetrachloro-2,5-cyclohexadiene-1,4-dione
Synonyms: 2,3,5,6-tetrachloro-p-benzoquinone; tetrachloroquinone
Trademarks: Spergon; Vulklor
Molecular Formula: C6Cl4O2
Molecular Weight: 245.88
Percent Composition: C 29.31%, Cl 57.68%, O 13.01%
Literature References: Prepd from p-phenylenediamine or phenol by treating with KClO3 and HCl. Because of its great resistance to further oxidation, chloranil is formed as the final product of the chlorate-HCl oxidation of many aromatic compds. For comprehensive list see Huntress, Organic Chlorine Compounds (New York, 1948). Laboratory procedure starting with phenol or p-chlorophenol: Fierz-David, Blangey, Grundlegende Operationen der Farbenchemie (Vienna, 5th ed., 1943) p 140. Use as reagent for pamaquine, q.v., in urine: Schulemann et al., Chem. Zentralbl. 1928, I, 2193. Aqueous decomposition study: D. H. Sarr et al., Environ. Sci. Technol. 29, 2735 (1995). Review: Health and Environmental Effects Profile for Chloranil (EPA PB88-219696, 1986) 59 pp.
Properties: Golden-yellow platelets from acetic acid or acetone. Monoclinic prisms from benzene or toluene or by sublimation in vacuo, mp 290°. Absorption spectrum in chloroform: Lifschitz et al., Rec. Trav. Chim. 43, 276, 658 (1924). Insol in water; almost insol in cold petr ether, cold alcohol. Sol in ether; sparingly sol in chloroform, carbon tetrachloride, carbon disulfide. Solubility data: Dimroth, Bamberger, Ann. 438, 103, 106 (1924).
Melting point: mp 290°
CAUTION: Potential symptoms of overexposure are watery diarrhea, CNS depression, coma. Not absorbed percutaneously; direct contact may cause skin irritation. See Clinical Toxicology of Commercial Products, R. E. Gosselin et al., Eds. (Williams & Wilkins, Baltimore, 5th ed., 1984) p II-317.
Use: Agricultural fungicide, dye intermediate, reagent. Manuf of electrodes for pH measurement.