Sodium Tripolyphosphate, Appearance : White Crystalline Powder

We are offering sodium tripolyphosphate(stpp).
specifications:
content as na5p3o10 % 94% min.
content as p2o5 % 57.5%min.
ph value (1% solution) 9.2-10.0
water insoluble % 0.13 max.
iron as fe % 0.006 max.
whiteness % 90.0 min.
bulk density (g/cm3) 0.46-0.51
phase I % 12-30
application: used as one of the main auxiliaries for synthetic detergent,
synergist for soap; water softener, tanning agent for leather making, auxiliary
for dyeing; as an effective dispersion agent for suspensions of coatings,
kaolin, magnesium oxide, calcium carbonate and drilling mud etc.; as an oil