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Sulfite cooking of viscose cellulose. XIV. The effect of polythionates on the decomposition of cooking liquor and on the cooking process

I. Sl√°vik

Slovak Academy of Sciences, Bratislava


Abstract: The effect of polythionates on the decompn. of SO2 in H2O during heating at up to 150° for 3.5 hrs. and on sulfite cooking of sprucewood is described. Na tetrathionate (prepd. from Pb thiosulfate, by oxidn. with I and treatment with Na2CO3) accelerates the decompn. of cooking liquor in a similar way and to the same extent as thiosulfate and thus affects adversely the cooking process. It was established that in the system H2SO3-thiosulfuric-trithionic-tetrathionic acids in aq. soln. the last 3 components can be interconverted, until a state of equil. is achieved. Cf. CA 55, 19237a.

Full paper in Portable Document Format: 156a456.pdf (in Slovak)


Chemical Papers 15 (6) 456–461 (1961)

Friday, September 17, 2021

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