1,Quickly delivery 2,Manufacturer of Sodium Tripolyphosphate 3,Free sample 4, ... remarkable chelating ability to some metal ions such as Ca 2+, Mg 2+, can soften hard water, change suspension into solution, slightly ... alkaline, without causticity. 2, Usage: Used as main auxiliary of synthetic wash, soap ... Fe %; 0.015 pH of 1% water solution 9.2-10.0 STPP