copper number

noun

Definition of copper number

: a number that expresses the amount of copper reduced from the cupric to the cuprous state (as in Fehling solution) by a given amount of cellulose material and that is useful as a measure of purity especially in relation to strength and resistance to chemical deterioration of paper and other cellulose products

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“Copper number.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/copper%20number. Accessed 24 Jan. 2021.

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