Import Ammonium Polyphosphate (Phase-I) — Buy in Bulk from Supplier in China

Ammonium polyphosphate phase I from Summit Chemical Industrial Co., Limited is a water soluble, high molecular weight inorganic flame retardant with the molecular formula (NH4PO3)n where n is greater than 50. The product, identified as SCI-FR1-APP, meets the HG/T2770-1996 standard and is supplied as a white powder with a guaranteed P2O5 content of 69 percent and nitrogen content of 14 to 15 percent. Its high polymerization degree of at least 80 ensures low water solubility, measured at 1.5 g per 100 ml at 25°C, and minimal hygroscopicity for stable storage.

The material’s pH in a 10 percent aqueous solution is 7.0±0.5, close to neutral, which enhances compatibility with resins, coatings and other additives. With a typical moisture content below 0.5 percent by weight and an average particle size of 200 to 325 mesh, it is well suited for uniform dispersion in fireproof paints and coatings. Standard for phase I ammonium polyphosphate, the LD50 exceeds 10 g per kg, indicating low toxicity and safe handling under normal production conditions.

This grade is primarily used in expandable fireproof coatings for multistory buildings, ships, trains and cables, as well as in flame retardant treatments for wood, plywood, fiberboard, paper and fibers. It also serves as the main flame retardant additive in plastics, resins and rubbers. The product is packed in 25 kg woven bags with plastic liners or 875 kg big bags, with a loading capacity of 18 metric tons per 20-foot container with pallets or 20 metric tons without. Buyers typically confirm storage requirements, as the material must be kept in dry, well ventilated areas.

Summit Chemical Industrial Co., Limited is based in the Industrial Development Zone of Hefeng Town, Shifang, Sichuan Province, China. The company operates as an imported tier supplier with a harbor trust tier, indicating a baseline level of verified trade activity. Its product range includes specialized chemical formulations such as ammonium polyphosphate phase I, tailored for industrial flame retardant applications.

The supplier’s profile shows a response rate of 0.00 percent, suggesting limited engagement or updated communication metrics. While the address and operational details are provided, the listing does not confirm additional verification signals such as certifications, production capacity, or client references. Buyers are advised to directly confirm these details with the supplier before proceeding with orders.