Difference between revisions of "Schweitzer's reagent"
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== Description == | == Description == | ||
| − | A reagent test solution used to identify [ | + | A reagent test solution used to identify [[wool|wool]]. Schweitzer's solution contains [[copper%20hydroxide|copper hydroxide]] dissolved in [[ammonium%20hydroxide|ammonia]]. The liquid dissolves [[cotton|cotton]], [[silk|silk]], and [[linen|linen]] but not wool. Many synthetic fibers do not dissolve in the solution. The solution is also used in the papermaking industry to dissolve cellulose in order to measure its average molecular weight. |
== Synonyms and Related Terms == | == Synonyms and Related Terms == | ||
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Schweitzers reagent; Schweitzer's solution; cuprammonium hydroxide; ammoniacal cupric oxide; cuam; cupram | Schweitzers reagent; Schweitzer's solution; cuprammonium hydroxide; ammoniacal cupric oxide; cuam; cupram | ||
| − | == | + | == Physical and Chemical Properties == |
Solution: dissolve 5 g cupric sulfate in 100 ml boiling water and add sodium hydroxide until precipitation is complete. Wash precipitate well then dissolve in minimum amount of ammonium hydroxide. | Solution: dissolve 5 g cupric sulfate in 100 ml boiling water and add sodium hydroxide until precipitation is complete. Wash precipitate well then dissolve in minimum amount of ammonium hydroxide. | ||
| − | == | + | ==Resources and Citations== |
* Richard S. Lewis, ''Hawley's Condensed Chemical Dictionary'', Van Nostrand Reinhold, New York, 10th ed., 1993 | * Richard S. Lewis, ''Hawley's Condensed Chemical Dictionary'', Van Nostrand Reinhold, New York, 10th ed., 1993 | ||
Latest revision as of 14:14, 15 June 2022
Description
A reagent test solution used to identify Wool. Schweitzer's solution contains Copper hydroxide dissolved in ammonia. The liquid dissolves Cotton, Silk, and Linen but not wool. Many synthetic fibers do not dissolve in the solution. The solution is also used in the papermaking industry to dissolve cellulose in order to measure its average molecular weight.
Synonyms and Related Terms
Schweitzers reagent; Schweitzer's solution; cuprammonium hydroxide; ammoniacal cupric oxide; cuam; cupram
Physical and Chemical Properties
Solution: dissolve 5 g cupric sulfate in 100 ml boiling water and add sodium hydroxide until precipitation is complete. Wash precipitate well then dissolve in minimum amount of ammonium hydroxide.
Resources and Citations
- Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
- The Dictionary of Paper, American Paper Institute, New York, Fourth Edition, 1980
- E.J.LaBarre, Dictionary and Encyclopedia of Paper and Paper-making, Swets & Zeitlinger, Amsterdam, 1969
- CRC Handbook of Chemistry and Physics, Robert Weast (ed.), CRC Press, Boca Raton, Florida, v. 61, 1980