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Determination of lignin in bleached viscose cellulose

I. Slávik and Ľ. Kuniak

Slovak Academy of Sciences, Bratislava

 

Abstract: For a complete sepn. of lignin from resins, bleached viscose cellulose (I) is dissolved in 0.2% NaOH, acidified with AcOH to pH 4.0, and the lignin oxidized in CCl4. Pptd. resins are filtered and after drying dissolved in C6H6-EtOH, again evapd. and weighed. For routine analysis, lignin is detd. after the extn. of I with Et2O.

Full paper in Portable Document Format: 115a285.pdf (in Slovak)

 

Chemical Papers 11 (5) 285–292 (1957)

Wednesday, November 13, 2019

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