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CAS No 106-34-3 , benzene-1,4-diol Search by region : China

  • Name: benzene-1,4-diol
  • Synonyms: benzene-1,4-diol; Chinhydron; Chinhydron [Czech];Green hydroquinone;cyclohexa-2,5-diene-1,4-dione; 106-34-3; p-Benzoquinhydrone; Hydroquinone: benzoquinone 1:1 complex;
  • CAS Registry Number:
  • Transport: UN 2811
  • Melting Point: 168-172 ºC
  • Flash Point: 141.6°C
  • Boiling Point: 285 °C
  • Density: 1.40
  • Water Solubility: 4 G/L (20 ºC)
  • Safety Statements: R22;R36/37/38;R50
  • Hazard Symbols: Xn: Harmful;N: Dangerous for the environment;
  • Flash Point: 141.6°C
  • EINECS: 203-387-6
  • Molecular Weight: 218.2054
  • InchiKey: BDJXVNRFAQSMAA-UHFFFAOYSA-N
  • InChI: InChI=1S/C6H6O2.C6H4O2/c2*7-5-1-2-6(8)4-3-5/h1-4,7-8H;1-4H
  • Risk Statements: S26;S29;S37/39;S61
  • Molecular Formula: C12H10O4
  • Molecular Structure:CAS No:106-34-3 benzene-1,4-diol

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References of benzene-1,4-diol
Title: Quinhydrone
CAS Registry Number: 106-34-3
CAS Name: 2,5-Cyclohexadiene-1,4-dione compd with 1,4-benzenediol (1:1)
Synonyms: green hydroquinone
Molecular Formula: C12H10O4
Molecular Weight: 218.21
Percent Composition: C 66.05%, H 4.62%, O 29.33%
Literature References: An addn compd of one mol hydroquinone and one mol quinone. Prepn from hydroquinone and quinone: Gattermann-Wieland, Praxis des Organischen Chemikers (de Gruyter, Berlin, 40th ed., 1961) p 270. Alternate prepn by the action of ferric ammonium sulfate on hydroquinone: A. I. Vogel, Practical Organic Chemistry (Longmans, London, 3rd ed., 1959) p 747. Toxicity study: Woodward et al., Fed. Proc. 8, 348 (1949).
Properties: Green crystals with metallic luster; reddish-brown by transmitted light. d 1.40. mp 171°; sublimes with partial decompn. Slightly sol in cold water; sol in hot water, ammonia, alc, ether. Insol in petr ether. LD50 orally in rats: 225 mg/kg (Woodward).
Melting point: mp 171°
Density: d 1.40
Toxicity data: LD50 orally in rats: 225 mg/kg (Woodward)
Use: In pH determinations (quinhydrone electrode).