This standard covers soda ash for use in the treatment of municipal and industrial water supplies. The purpose of this standard is to provide purchasers, manufacturers, and suppliers with the minimum requirements for soda ash, including physical, chemical, packaging, shipping, and testing requirements. Topics covered include: physical requirements; chemical composition; impurities; sampling; apparent density; insoluble matter; total available alkali; rejection; marking; packaging and shipping; and, affidavit of compliance.