We’re not talking about booze, or other types of alcohol.

In chemical terminology we’re talking about any aqueous solution of one or more chemical compounds.

In sugar manufacturing it refers to the syrups obtained from various refining steps.

In the paper industry we mean:

  • Black liquor is liquid digester waste (also called spent sulfate liquor) containing sulfonated ligin, rosin acids, and other waste wood components from which tall oil is made.
  • Green liquor is a solution made by dissolving chemicals recovered in the alkaline pulping process in water.
  • White liquor is made by adding caustic soda to sodium sulfide solutions.

In the dyeing industry red liquor is an alternate name for mordant rouge.