Titanium dioxide
The main product is pigment grade titanium dioxide which is extracted from ilmenite, which is abundantly available as placer deposits on beaches near Kollam, 65 km north of Thiruvananthapuram. Ilmenite, a mixture of titanium dioxide and iron in the form of ferric/ferrous oxide, is treated with Sulphuric Acid to get Titanium dioxide and ferrous sulphate.