... as Ca 2+, Mg 2+, can soften hard water, change suspension into solution, slightly alkaline, without causticity ... main auxiliary of synthetic wash, soap synergistic agent, water softener, leather pre-tanning agent, dye auxiliary agent ... 0.1 Iron, as Fe %; 0.015 pH of 1% water solution 9.2-10.0 2. Food grade ... 0003 Fluoride, as F, %; 0.003 Chloride, as Cl %; 0.025 4, Packing: Plastic-woven sack with ...