... Phosphate 2.CAS No.: 1314-56-3 3.Place of Origin: Zhejiang China (Mainland) 4.Purity: 99% Phosphorus Pentoxide(P2O5) Place of Origin ... Zhejiang, China (Mainland) CAS No. 1314-56-3 Purity 99%Phosphorus Pentoxide is a white, flammable, dangerous, and extremely deliquescent ... ,Reasonable Price and High Quality 2,Manufacture of Products 3,Quick Delivery 4,Good Package 5,Good Service