... You are worth every penny of it. STPP Sodium Tripolyphosphate Na5P3O10,% ,Min.94P2O5,% ,Min.57Insolubles, % Max.0.05PH Value(1%Solution)9.5 ... (as SO4), %, Max.0.4Bulk density, g/l650-990White degree %,Min.93Phase I10-30 Used as main auxiliary of synthetic wash ...