American Natural Soda Ash Corporation (ANSAC) operates as the international distribution arm for three US manufacturers of natural soda ash produced from trona[1] deposits in Green River, Wyoming, the trade name for sodium carbonate Na2CO3, is an essential raw material used in the manufacture of glass, detergents, and several sodium-based chemicals.

The company was set up to act as the international sales, marketing and distribution cooperative for the four leading producers of natural soda ash in the United States Soda ash is one of the most widely used and important commodities in the United States, contributing substantially to the gross domestic product[2] For this reason, the Federal Reserve Board incorporates monthly soda ash production data into monthly economic indicators used to monitor the condition of the US economy The USA is the world’s largest exporter of soda ash and exported over 5 million tonnes in 2008, which accounted for over 50% of the world’s trade in this commodity ANSAC ships soda ash to all areas of the globe except North America and Western Europe.

These volumes make the company the world's largest exporter of natural soda ash.

The soda ash is moved from the plants in Wyoming in a fleet of 4000 rail cars or 40 unit trains to ANSAC’s dedicated ocean terminals in Portland, Oregon and Port Arthur, Texas.

[5] American Natural Soda Ash Corp ANSAC has agreed to pay a fine of $1 M to settle a price fixing case filed by Botswana Ash Ltd Botash and Chemserve Technical Products Ltd with South Africa's Competition Commission The company acknowledged its participation in the price fixing and also agreed to halt exports in its present state ANSAC will continue to supply soda ash for a short period of time before completely withdrawing from South Africa The price fixing case, which started on 26 Oct 1999, accused ANSAC and its acting agent in South Africa, CHC Global Ltd, of violating the Competitions Act