Nalco Holding Company NYSE: NLC (formerly Ondeo Nalco) supplies water treatment and process improvement services, chemicals and equipment programs for industrial and institutional markets. These products and services are marketed in some cases to prevent corrosion, contamination and the buildup of harmful deposits. In other applications they are used in production processes to enhance process efficiency and improve customers’ end products.
Nalco is a sales company that currently serves more than 70,000 customers employing over 11,500 employees operating in over 130 countries.
Corexit is a product line of solvents primarily used as a dispersant for breaking up oil slicks. It is produced by Nalco Holding Company which is associated with BP and Exxon.(source Wikipedia)