ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

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

I. Slávik

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)