Ammonium Polyphosphate

Product Overview

Ammonium Polyphosphate (APP) represents a critical advancement in modern fire safety technology, serving as a premier halogen-free flame retardant additive. Our specialized grade, identified by CAS 68333-79-9, is engineered to meet the rigorous demands of contemporary industrial manufacturing while adhering to strict environmental standards. As a type II ammonium polyphosphate, this compound offers superior thermal stability and polymerization degree, making it an indispensable component for producing intumescent flame retardant systems.

Unlike traditional halogenated alternatives, this material operates through a char-forming mechanism that isolates heat and oxygen during combustion. This process significantly reduces smoke density and toxicity, ensuring safer outcomes in fire scenarios. The chemical structure provides excellent compatibility with various polymer matrices, allowing manufacturers to achieve high fire resistance ratings without compromising the mechanical integrity of the final product.

Technical Specifications

Industrial Applications

The versatility of this flame retardant extends across multiple high-value sectors. In the construction industry, it is formulated into high-efficiency intumescent coatings for protecting high-rise buildings, steel structures, and wooden substrates such as plywood and fiberboard. The transportation sector utilizes this additive for fire-retardant treatment in ships, trains, and automotive cables, ensuring compliance with international safety regulations.

Furthermore, it serves as a primary raw material for composite flame retardants used in plastics and rubber manufacturing. Specific applications include polypropylene (PP), polyethylene (PE), polyvinyl chloride (PVC), and polyester resins. Beyond solid materials, it is also processed into dry powder fire extinguishing agents suitable for large-scale suppression in forests and coal fields, demonstrating its broad utility in emergency safety equipment.

Key Performance Advantages

• Environmental Compliance: As a halogen-free environment-friendly flame retardant with a nitrogen structure, it meets global green chemistry initiatives and regulatory requirements.
• Thermal Stability: The high polymerization degree ensures excellent thermal stability and low hygroscopicity, allowing for reduced dosage levels which lowers overall production costs.
• Safety Profile: During combustion, the expanded carbon layer provides effective thermal and air isolation, characterized by low smoke, low toxicity, and no molten droplets.
• Equipment Protection: The near-neutral PH value prevents corrosion of production equipment, extending machinery lifespan and reducing maintenance expenses.
• Synergistic Effects: It demonstrates excellent synergy when combined with aluminum hydroxide, enhancing overall flame retardant performance beyond individual component capabilities.

Packing and Storage

To maintain optimal quality, the product is packaged in 25kg cardboard drums. Storage requires a dry and ventilated warehouse environment, protected from direct sunlight and moisture. Containers must remain sealed to prevent contamination, and the area should be kept away from fire sources. Proper handling ensures the material retains its specified properties throughout its shelf life.