Cyanide-free and Cyanide-free Basic Zinc Intermediates include: benzyl nicotinic acid inner salt (BPC), imidazole propoxy condensate (IMZE), hexamethylene triquaternary ammonium chloride (HETM), and ...

THE absorption spectra of salts of trivalent chromium are characterised by exceedingly narrow bands in the red part of the spectrum. Their presence in the spectra of co-ordination compounds of ...

"The presence of dissolved trivalent chromium [Cr 3+, with three electron vacancies] can accelerate corrosion in some cases, whereas divalent chromium [Cr 2+, with just two vacancies] does not ...