Tata Chemicals has posted a 16% increase in net profit for the quarter ended June 30, 2006 at Rs 75.35 crore when compared with Rs 64.94 crore for the quarter ended June 30, 2005. According to an official release issued by Tata Chemicals to the BSE today, total income has increased to Rs 762.84 crore for the quarter ended June 30, 2006 from Rs 520.62 crore for the quarter ended June 30, 2005.