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

The technological preparation of 'Parisian Blue'

K. Polinszky, V. Ochsenfeld, J. De Jonge, and G. Szigeti

Chem. tech. School, Veszprem, Hung.

Abstract: The formation of a white mass (I) which is a first step in manufg. of Parisian Blue (II) and its effect on the quality of II was studied. The compn. of I is K₂Fe[Fe(CN)₆]. I adsorbs FeSO₄ and the amt. of FeSO₄ in soln. is increased in the proportion to the amt. of FeSO₄ used for pptn. The amt. of FeSO₄ adsorbed on I is dependent on the concn. of the initial solns. and follows the known laws of adsorption. The concn. of solns., the speed, and the order of added components affect the quality to a less degree while the temp. of pptn. and the mol. ratio FeSO₄:K₄[Fe(CN)₆] have a much greater effect. By boiling I in H₂SO₄ soln. for a long time, FeSO₄ is desorbed and a ppt. of desired compn. K2Fe[Fe(CN)₆] can be prepd. The quality of II is improved by increasing the amt. of K.

Full paper in Portable Document Format: 112a98.pdf (in Slovak)

Chemical Papers 11 (2) 98–106 (1957)