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Cream color crystals. Chlorohydroquinone is used in photographic developing solutions. It is also a bactericide.

Synonyms and Related Terms

halquinol?; chlorquinol?; 2-chloro-1,4-dihydroxybenzene; 2-chloro-1,4-benzenediol; 2-chlorohydroquinone; monochlorohydroquinone

Chemical structure


Other Properties

Soluble in water, ethanol. Slightly soluble in ether.

Composition ClC6H3(OH)2
CAS 615-67-8
Melting Point 101-102
Molecular Weight mol. wt. = 144.56
Boiling Point 263

Hazards and Safety

Toxic by ingestion. Skin contact will cause irritation.

Fisher Scientific: MSDS


  • Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
  • The Merck Index, Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983 Comment: entry 4637
  • Michael McCann, Artist Beware, Watson-Guptill Publications, New York City, 1979
  • Aldrich Chemical Catalog

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