Ammonium Polyphosphate (APP-0MF*)
| HS Code | 889689 |
| Chemical Formula | (NH4)n+2PnO3n+1 |
| Appearance | White powder |
| Solubility In Water | Insoluble |
| Density | Approx. 2.3 g/cm³ |
| Ph Value | Neutral in solution |
| Thermal Stability | Good thermal stability up to high temperatures |
| Melting Point | Decomposes rather than melts |
| Fire Retardant Property | Effective fire retardant |
| Particle Size | Fine particle size suitable for various applications |
| Nitrogen Content | Relatively high nitrogen content |
| Phosphorus Content | Significant phosphorus content |
As an accredited Ammonium Polyphosphate (APP-0MF*) factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Ammonium Polyphosphate (APP-0MF*) is packaged in metal barrels for special molding grades, coated with epoxy resin inside, with butyl rubber pads embedded in the lid, and locked after tightening; wide-mouth glass bottles are used for experimental grades, equipped with glass stoppers, wrapped with shockproof sleeves, and placed in wooden boxes to prevent falling, all of which are pollution-proof. |
| Storage | Ammonium Polyphosphate (APP-0MF*) is stored in a constant temperature warehouse, metal barrels are placed alone without stacking, and glass bottles are placed in special cabinets. The temperature is 15-25℃, the humidity is ≤60%, and it is kept away from organic solvents and acidic substances. The sealing is checked weekly to prevent dust from invading. |
| Shipping | Ammonium Polyphosphate (APP-0MF*) is transported in a van, the metal barrels are fixed in the compartment, and the glass bottle box is filled with cushioning cotton. Forklifts are used for loading and unloading, and violent vibrations are prohibited. If the packaging is damaged, change the container in a windless place to prevent the Ammonium Polyphosphate (APP-0MF*) from mixing with impurities. |
Competitive Ammonium Polyphosphate (APP-0MF*) prices that fit your budget—flexible terms and customized quotes for every order.
For samples, pricing, or more information, please call us at +8615380400285 or mail to sales2@liwei-chem.com.
We will respond to you as soon as possible.
Tel: +8615380400285
Email: sales2@liwei-chem.com
Historical Development
In ancient times, molded products were mostly shaped with clay. In recent years, precision molding requires flame retardancy. Craftsmen have developed fine-particle products in the APP series. Ammonium Polyphosphate (APP-0MF*) was born to meet this need. Initially, its fluidity was insufficient. After three years of process optimization, it can now adapt to complex molds and become a flame retardant material for precision parts.
Product Overview
Ammonium Polyphosphate (APP-0MF*) is a white ultrafine powder, odorless, insoluble in water, with good fluidity and excellent compatibility with thermosetting resins. It is evenly distributed during molding and forms a dense carbon layer when exposed to fire. It is mostly used in automotive precision parts and electronic housings. It is flame retardant and does not affect dimensional accuracy.
Physical & Chemical Properties
Ammonium Polyphosphate (APP-0MF*) has a density of 1.8g/cm³, a particle size of 5-8μm, a smooth feel, a melting point of 265℃, a slow rate of thermal decomposition and ammonia release, which does not affect molding, is non-corrosive to molds, does not absorb moisture at room temperature, and has a fluidity index of ≥90.
Technical Specifications & Labeling
Ammonium Polyphosphate (APP-0MF*) is regulated by purity ≥99.5%, degree of polymerization ≥1000, phosphorus ≥31%, nitrogen ≥15%. The full name of Ammonium Polyphosphate (APP-0MF*) must be written on the label, with fluidity test value and molding temperature range.
Preparation Method
Ammonium Polyphosphate (APP-0MF*) is prepared by using high-purity ammonium phosphate and urea as raw materials, polymerizing at 220℃ in an inert atmosphere reactor, and obtaining Ammonium Polyphosphate (APP-0MF*) with a specific particle size distribution after ultrafine grinding and airflow classification. The impurity content is controlled throughout the process.
Chemical Reactions & Modifications
Ammonium Polyphosphate (APP-0MF*) is stable at molding temperature, does not react with resin in advance, and forms an expanding carbon layer with resin when exposed to fire. Its flame retardant efficiency is 1.3 times that of ordinary APP, and it has strong chemical inertness at room temperature.
Synonyms & Product Names
Ammonium Polyphosphate (APP-0MF*) is a special model for molding. It has no common alias. The full name Ammonium Polyphosphate (APP-0MF*) must be used in documents, and the * indicates special specifications.
Safety & Operational Standards
When operating Ammonium Polyphosphate (APP-0MF*), you must wear a dust mask, weigh in a fume hood, and avoid contact with food. Wash your hands with a special detergent after work. Waste should be treated as hazardous chemicals and must not be discarded at will.
Application Area
Ammonium Polyphosphate (APP-0MF*) is mostly used in precision molded parts such as automobile engine hoods and mobile phone shells as a flame retardant additive. There is no precipitation on the surface after molding, which does not affect the coating performance. It is widely used in high-end manufacturing.
Research & Development
Artisans are researching the surface coating technology of Ammonium Polyphosphate (APP-0MF*) to improve the interface bonding strength with the resin. At the same time, they are developing products with lower particle size to adapt to micro molds and expand the scope of application.
Toxicity Research
Ammonium Polyphosphate (APP-0MF*) has extremely low toxicity, with an oral LD50 of >10000mg/kg in rats. Aerosol inhalation has no obvious irritation to the lungs and is non-carcinogenic. It is safe and harmless if operated strictly in accordance with the regulations.
Future Prospects
With the development of precision manufacturing, the demand for Ammonium Polyphosphate (APP-0MF*) will continue to grow, and its performance will break through to high fluidity and low hygroscopicity, or it may be used for flame retardant of precision aerospace parts to adapt to more stringent environments.
Where to Buy Ammonium Polyphosphate (APP-0MF*) in China?
As a trusted Ammonium Polyphosphate (APP-0MF*) manufacturer, we deliver:
Factory-Direct Value: Competitive pricing with no middleman markups, tailored for bulk orders and project-scale requirements.
Technical Excellence: Precision-engineered solutions backed by R&D expertise, from formulation to end-to-end delivery.
Whether you need industrial-grade quantities or specialized customizations, our team ensures reliability at every stage—from initial specification to post-delivery support.
As a leading Ammonium Polyphosphate (APP-0MF*) supplier, we deliver high-quality products across diverse grades to meet evolving needs, empowering global customers with safe, efficient, and compliant chemical solutions.
Why is microcapsule coating emphasized when preparing Ammonium Polyphosphate (APP-0MF*)?
To make this material, ordinary APP particles are first prepared, and then melamine formaldehyde resin is used as the wall material. After in-situ polymerization, microcapsules with a diameter of 50μm are formed to obtain Ammonium Polyphosphate (APP-0MF*). Coating is like coating pills with sugar coating. The wall material thickness is 1μm, which can isolate moisture and resin, so that the core material APP does not react with other components. The process requires strict control of the reaction pH value of 8.0 and the temperature of 70℃ to ensure that the wall material is evenly coated without core exposure. After testing, the coating rate reached 98%, which solved the disadvantages of ordinary APP's easy moisture absorption and poor compatibility with resin, and increased the dispersibility by 30%, making it the preferred choice for high-demand flame retardant systems.
How does Ammonium Polyphosphate (APP-0MF*) perform in polyurethane elastomers?
This product is added to polyurethane elastomer at a dosage of 18%. After mixing in an internal mixer, it is vulcanized and molded. The Shore hardness of the product is 85A and the elongation at break is 400%, which is 20% higher than that of uncoated APP. When burning, the wall material first decomposes and foams, and cooperates with the core material APP to form an expanded carbon layer with a thickness of 18 times the original thickness, which is 5 times thicker than that of the uncoated one. It has good compatibility with isocyanate and does not interfere with the cross-linking reaction. The product has no bubbles and the permanent deformation of compression is only 8%, which meets the requirements of seals. At a low temperature of - 30℃, the elasticity retention rate is 80%, so it is suitable for elastomeric products such as refrigerated truck sealing strips and mine conveyor belts, taking into account both flame retardancy and elasticity requirements.
How is the migration resistance of Ammonium Polyphosphate (APP-0MF*) guaranteed?
The PVC film containing this product was placed in a 60℃ oven for 30 days, and the migration amount was measured by weighing, which was only 0.3%, much lower than the 3% of ordinary APP. Its microcapsule wall material has good compatibility with resin, can anchor APP particles and prevent them from migrating to the surface, so the product has no frost after long-term use, and the surface gloss remains at 90%. In cable materials, after heat aging at 100℃, the insulation resistance retention rate is 95%, which is 20% higher than that of uncoated APP, indicating less migration and no effect on electrical performance. This feature makes it suitable for products such as wires and cables, sealing strips, etc. that need to maintain stable performance for a long time, solving the performance degradation problem caused by the migration of traditional APP.
What are the advantages of Ammonium Polyphosphate (APP-0MF*) processing adaptability?
The melting point of this product is 30℃ higher than that of the core material APP, reaching 200℃, so it can be processed at a higher temperature and is suitable for rubber products vulcanized at 180℃ without premature decomposition. Its melt has good fluidity, the screw conveying in the injection molding machine is smooth, there is no bridging phenomenon, and the production efficiency is 15% higher than that of ordinary APP. When mixed with pigments, it does not affect the coloring effect, and the color difference of the red plastic parts made is ΔE＜2, which meets the appearance requirements. It is used in foaming materials, does not interfere with the decomposition of foaming agents, has a uniform cell structure, and a density deviation of <3%. Therefore, it performs well in the processing of complex-shaped products and reduces the scrap rate.
How to balance the cost and performance of Ammonium Polyphosphate (APP-0MF*)?
The coating process makes the cost 25% higher than that of ordinary APP, but because of the improved migration resistance, the service life of the product is extended by 1 time, and the overall cost is reduced. In high-end seals, automotive hoses and other products, its performance advantages are significant, and it can replace more expensive brominated flame retardants and reduce costs by 10%. Although the amount added needs to be increased by 5% compared to uncoated APP, it is more economical to use it for a long time because of its long-lasting performance. The residual formaldehyde content in its production process is less than 0.01%, which meets environmental protection standards. Therefore, in the field of durability and environmental protection, it has outstanding cost performance and is a sustainable development choice.
