SIOF Società Italiana Ossidi Ferro

Italian iron oxide pigment maker founded on 21 September 1923, a family company whose pigment know-how has passed down three generations. Its two plants are in Pozzolo Formigaro (Alessandria), where red, orange and brown oxides are made and blended, and in Verona, which makes yellow oxides by its own version of the Penniman-Zoph process, processes natural earths and houses the R&D lab. The powder catalogue has over 70 shades: natural and synthetic iron oxides (incl. micronized and heat-stable black grades), chromium oxide greens, natural earths (siennas, umbers, ochre), graphite, aluminium paste, titanium dioxide and some organic pigments (phthalocyanines). Applications named: paints and varnishes, inks, plastics, rubber, paper and board, cement and concrete, plasters, asphalt, wood, glass, abrasives and biogas desulphurisation. Packs from a few hundred grams to containers; serves about 40 countries.