In detergent output, STPP is added in the course of the Mixing stage to be sure it is evenly dispersed through the entire solution. We are devoted to providing you with superior-good quality products and solutions in the field to meet your diversified wants. By anon277423 �?On Jun 29, 2012 https://www.tjcyindustrialchem.com/news/what-is-sodium-tripolyphosphate-stpp-used-for.html