This standard covers sodium aluminate (Na2Al2O4) in both liquid and solid form for use in water supply service. Sodium aluminate as covered by this standard is a combination of sodium oxide (Na2O) and aluminum oxide (Al2O3) with sufficient excess causticity (sodium oxide) for stabilization. The main purpose of this standard is to provide purchasers, manufacturers, and suppliers with the minimum requirements for sodium aluminate, including physical, chemical, packaging, shipping, and testing requirements.