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copper number

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copper number [′käp·ər ‚nəm·bər]
(analytical chemistry)
The number of milligrams of copper obtained by the reduction of Benedict's or Fehling's solution by 1 gram of carbohydrate.


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The content of total phenolic hydroxyl groups in residual lignins, which decreased with decreasing cooking temperature, also correlated well with the bleachability, as measured by the total kappa factor, and functional groups such as copper number and carboxyl group of the bleached pulp.
 
 
 
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