We are Xinxiang Huaxing Chemical Co.,Ltd. based in Xinxiang, China. We are member of TradeKey.com since June, 2012. Our business is related to Chemicals industry and we specifically deal in STPP. Please find our product details below: Sodium Tripolyphosphate Whiteness:90%min P2O5:56.5%-57%min. Na5P3O10: 94%min. Water insoluble:0.10%max Fe%: 0.007% PH: 9.2-10.0 Particle size % (passing through 1.00mm Trv-sieve)95%min Sodium Tripolyphosphate Food Grade Sodium Tripolyphosphate(STPP) Chemical formula : Na2H2P2O7 CAS Number: 7758-16-9 Purity:95% Made in China Manufacture: Competitive price and quality Thank you for taking time to go through our business profile. If there are any questions, inquiries or comments, please feel free to contact us.