Sodium Tripolyphosphate Formula: Na5P3O10 Molecular Weight: 367.86 Appearance: White powder or Crystal Specification: Index Surface Density(g/cm3) Content of Phase I (%) Code L M H A B C Spec 0.35~0.50 0.51 ~0.65 0.66 ~1.00 5~20 21~ 40 > 40 Index Technical Grade Food Grade Main Content (Na5P3O10 ) ≥ 94% 94% Phosphorus Pentoxide(P2O5) ≥ 56.5% 56.5% Whiteness ≥ 90% 90% Insoluble matter in water ≤ 0.1% 0.1% Iron (Fe) ≤ 0.008% PH Value(10g/l solusion) 9.2 ~ 10.9.2 ~10.0 Density(g/cm3) ≤ 0.35 ~ 1.00 0.35~ 1.00 Arsenic (As) ≤ 0.0005% Heavy Metal ( as Pb ) ≤ 0.001% Floride ( as F ) ≤ 0.005% Packing: In 25kg or 50kg PP woven bags line with PE film bag inside. Application: Technical grade is mainly used in china, scour, petroleum, metallurgy, mining, water treatment, printing and dyeing industry and so on. Food grade complex plastic interweaved sack outside with double-layer polyethylene-film sack inside, net weight 25kg; Or based on the demand of user.