This standard describes calcium chloride, CaCl2, in powder, pellet, granule, flake, or briquette form for use in the treatment of potable water, wastewater, and reuse or reclaimed water. It can be referenced in documents for purchasing and receiving calcium chloride and can be used as a guide for testing the physical and chemical properties of calcium chloride samples. The stipulations for this standard apply when this document has been referenced and then only to calcium chloride used in the treatment of potable water, wastewater, and reuse or reclaimed water.Downloadable versions of current and historical standards are also available.