ISSN print edition: 0366-6352
ISSN electronic edition: 1336-9075
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Sulfite cooking of viscose cellulose. VII. The influence of formic acid on the decomposition of cooking acid at higher temperatures

I. Sl√°vik

Slovak Academy of Sciences, Bratislava

 

Abstract: cf. C.A. 53, 9657a. In sulfite cooking the effect of HCOOH on SO2 solns. at higher temp. under pressure was studied. HCO2H reduces SO2 with the formation of thiosulfates and elementary S and is oxidized to CO2. The decompn. of SO2 by HCO2H is more rapid in solns. buffered with NaOH. The detrimental effect of HCO2H is explained if present in the cooking acid before cooking. Under certain conditions HCO2H as a reducing agent accelerates sulfite cooking.

Full paper in Portable Document Format: 131a47.pdf (in Slovak)

 

Chemical Papers 13 (1) 47–50 (1959)

Monday, July 13, 2020

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