... 2+, can soften hard water, change suspension into solution, slightly alkaline, without causticity. Usage Used as main ... softener, leather pre-tanning agent, dye auxiliary agent, and dispersant of suspension such as paint, kaolin, magnesium ... latex storage, as dispersant, solvent in metal industry and pharmaceutical industry, also widely used in gum synthesis, ... up in the open air. Sodium Tripolyphosphate