scope:

This standard describes ferric chloride in aqueous (liquid) form for use in the treatment of municipal and industrial water supplies. Applications of the chemical include (1) water softening with lime or a combination of lime and soda ash to improve hardness reduction and coagulation, and (2) water clarification, as a coagulant, followed by settling or filtration.

Purpose

The purpose of this standard is to provide the minimum requirements for liquid ferric chloride, including physical, chemical, packaging, shipping, and testing requirements.