Ammonium polyphosphate CAS#68333-79-9

Non-Toxic and Environmentally Friendly:Halogen-free and safe for use in various industrial and consumer applications.


Versatile Flame Retardant:Effective in coatings, paints, plastics, textiles, and wood for fire protection.


High Thermal Stability (Phase II):Phase II APP decomposes above 300 °C, making it suitable for high-temperature applications.


Controlled Solubility and Polymerization:Available in two forms—Phase I (short-chain, water-sensitive) and Phase II (long-chain, low water solubility)—allowing tailored performance for specific needs.


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Product Description

Product Description of Ammonium polyphosphate CAS#68333-79-9

Ammonium Polyphosphate (APP) is a non-toxic, halogen-free flame retardant synthesized from polyphosphoric acid and ammonia. It has two main grades: APP Phase I: Short linear chains with n<100, water sensitive and decomposable above 150 °C. APP Phase II: High-polymerized branched structure with n>1000, low water solubility, high thermal stability, decomposition temperature over 300 °C, serving as a premium halogen-free flame retardant.


Product Application of Ammonium polyphosphate CAS#68333-79-9

Ammonium Polyphosphate (APP) is an eco-friendly halogen-free flame retardant widely applied in coatings, paints and engineering plastics. As a key component of intumescent flame retardant systems, it can be used alone or compounded with other materials for flame retarding textiles, paper, fibers and wood. High-concentration grades with up to 50% P/N are available for special uses. APP also serves as a fertilizer, typically with N-P₂O₅-K₂O ratios of 10-34-0 or 11-37-0. Featuring high nutrient content, good stability and fine compatibility with micronutrients, polyphosphate fertilizers allow long-term storage and effectively supply plant nutrients.

Product Information

Parameters


density1.74[at 20℃]
vapor pressure0.076Pa at 20℃
storage temp.−20°C
solubilityAqueous Acid (Slightly)
formSolid
colorWhite to Off-White
biological sourcerabbit
InChIInChI=1S/3H3N.H3O4P/c;;;1-5(2,3)4/h3*1H3;(H3,1,2,3,4)
InChIKeyZRIUUUJAJJNDSS-UHFFFAOYSA-N
SMILESP(=O)([O-])([O-])[O-].[N+]([H])([H])([H])[H].[N+]([H])([H])([H])[H].[N+]([H])([H])([H])[H]
LogP-2.148 (est)
CAS DataBase Reference68333-79-9
EPA Substance Registry SystemAmmonium polyphosphates (68333-79-9)


Safety Information


TSCATSCA listed


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Q1: Is Huafeng Chemical a manufacturer or a trader?
A: We are a professional service provider specializing in chemical foreign trade. Rather than being limited to the products of a single factory, we leverage the chemical industry cluster in Shandong Province to integrate production resources from multiple high-quality manufacturers. This allows us to offer a wide range of sourcing options—covering various product categories and origins—instead of simply pushing a single product. Furthermore, our core competitiveness lies in our professional foreign trade services (covering documentation, logistics, and regulatory compliance), ensuring a smooth and worry-free procurement process for you.


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Q3: Do you have experience serving clients in Russian-speaking regions?
A: Yes. We place great importance on the Russian-speaking market; our team includes Russian-speaking business professionals who are well-versed in the import regulations of Russia and the Eurasian Economic Union (EAEU). We understand the importance of EAC certification to clients in these regions and can assist with related compliance inquiries. We have established connections with chemical traders across various CIS countries and have gained valuable experience in specialized packaging and temperature-controlled shipping designed to withstand harsh local winter conditions.


Q4: How do you guarantee product quality?
A: We implement a strict supplier qualification and periodic audit system. A Certificate of Analysis (COA)—issued by the original manufacturer—is provided with every shipment. We also welcome pre-shipment inspections conducted by internationally recognized third-party agencies such as SGS, BV, or ITS. Should the test results fail to meet the standards specified in the contract, you have the right to reject the goods or request a replacement.

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