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from the GNU version of the Collaborative International Dictionary of English

  • n. Either of two compounds, a chlorine derivative and bromine derivative, of hydroquinone, used as developers.

from The Century Dictionary and Cyclopedia

  • n. A trade-name for two compounds used as photographic developers. Adurol “Schering” is bromhydroquinone, C6H3Br(OH)2; adurol “Hanff” is chlorhydroquinone.


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