... as main auxiliary of synthetic wash, soap synergistic agent, water softener, etc. Specification:NA5P3O10P2O5INSOLUBLE IN WATERPH 1% AQUEOUS ... metal ions such as Ca2+, Mg2+, can soften hard water, change suspension into solution, slightly alkaline, without causticity. ... as main auxiliary of synthetic wash, soap synergistic agent, water softener, leather pre-tanning agent, dye auxiliary agent, and ...