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Substance Name: Chlorohydroquinone
RN: 615-67-8
UNII: 93SNN9E337

Classification Codes

  • Reproductive Effect
  • TSCA Flag TP (Subject to the Proposed TSCA Section 4 Test Rule)

Molecular Formula

  • C6-H5-Cl-O2

Molecular Weight

  • 144.557
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Names and Synonyms

Name of Substance

  • 2-Chloro-1,4-hydroxyquinone
  • Chlorohydroquinone


  • 1,4-Benzenediol, 2-chloro-
  • 1,4-Dihydroxy-2-chlorobenzene
  • 2,5-Dihydroxychlorobenzene
  • 2-Chloro-1,4-benzenediol
  • 2-Chloro-1,4-dihydroxybenzene
  • 2-Chlorohydroquinone
  • 4-06-00-05767 (Beilstein Handbook Reference)
  • AI3-08933
  • BRN 0636835
  • Chlorohydroquinone
  • Chloroquinol
  • EINECS 210-442-8
  • HSDB 2766
  • Hydroquinone, chloro-
  • Monochlorohydroquinone
  • NSC 427
  • NSC 5934
  • UNII-93SNN9E337

Systematic Names

  • 1,4-Benzenediol, 2-chloro-
  • Chlorohydroquinone
  • Hydroquinone, chloro-

Registry Numbers

CAS Registry Number

  • 615-67-8


  • 93SNN9E337

Other Registry Numbers

  • 134900-92-8
  • 140627-31-2
  • 68103-34-4

System Generated Number

  • 0000615678

Structure Descriptors








Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
guinea pig LD50 skin 500mg/kg (500mg/kg)   Kodak Company Reports. Vol. 21MAY1971,
rat LDLo intraperitoneal 100mg/kg (100mg/kg)   Kodak Company Reports. Vol. 21MAY1971,
rat LDLo oral 200mg/kg (200mg/kg)   Kodak Company Reports. Vol. 21MAY1971,
rat LDLo skin 500mg/kg (500mg/kg)   Kodak Company Reports. Vol. 21MAY1971,

Physical Properties

Physical Property Value Units Temp (deg C) Source
Melting Point 108 deg C   EXP
Boiling Point 263 deg C   EXP
log P (octanol-water) 1.4 (none)   EXP
Water Solubility 9.23E+05 mg/L 15 EXP
Henry's Law Constant 4.32E-11 atm-m3/mole 25 EST
Atmospheric OH Rate Constant 1.64E-11 cm3/molecule-sec 25 EST

Physical property data is provided to ChemIDplus by SRC, Inc.