Basic materials stocks were trading in the positive zone, with the S&P BSE Basic Materials index rising 25.9 points or 0.76% at 3428.16 at 09:48 IST. Among the components of the S&P BSE Basic Materials index, Hindustan Copper Ltd (up 9.28%), Tamil Nadu Petro Products Ltd (up 6.21%),Orient Cement Ltd (up 3.84%),National Peroxide Ltd (up 3.52%),Navin Fluorine International Limited (up 3.3%), were the top gainers. Among the other gainers were Manali Petrochemicals Ltd (up 3%), Century Textiles & Industries Ltd (up 2.99%), NCL Industries Ltd (up 2.58%), Phillips Carbon Black Ltd (up 2.53%), and Chambal Fertilisers & Chemicals Ltd (up 2.44%). On the other hand, Greenpanel Industries Ltd (down 2.76%), Ruchira Papers Ltd (down 1.53%), and Everest Industries Ltd (down 1.13%) moved lower.