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

Chlorine binding in saturation V-K chalk

J. Vašátko and Ľ. Stankovič

Slovak Academy of Sciences, Bratislava

Abstract: Chlorination and the insecticidal properties of the satn. V-K chalk produced from beet sugar defecation cake are described. In chlorination of the cake inorg. Cl^- and ClO^- and chlorinated amino compds. contg. active Cl bound on N are formed. There is a loss of active Cl in the presence of the org. matter and its cleavage products, with a further chlorination until pH is decreased to 9.4 from 10.4, which is a point change at which the cake is completely bleached. Then, to inhibit a further loss of active Cl, the cake is washed out by floating, and pH is decreased to 7.0. The tests on Musca domestica indicate that satn. V-K chalk is very effective as an insecticide.

Full paper in Portable Document Format: 1310a592.pdf (in Slovak)

Chemical Papers 13 (10) 592–601 (1959)