Ammonium polyphosphate| APP| CAS 68333-79-9

Description

Ammonium Polyphosphate (APP, CAS 68333-79-9) is a versatile inorganic compound widely used as a flame retardant, fertilizer, and industrial additive. With a high phosphorus and nitrogen content, APP offers excellent thermal stability and controlled nutrient release, making it suitable for demanding applications.

Specifications

Parameter	Specification
Appearance	White crystalline powder or granules
Solubility	Water-soluble (low-poly type), Low solubility (high-poly type)
pH (1% Solution)	5.0–7.0

Packaging Options:

25 kg/bag – 500 kg/bag – Bulk orders

Custom packaging – Available upon request

Key Advantages

Superior Flame Retardancy – Forms a protective char layer, suppressing smoke and toxic gas emissions.
High Thermal Stability – Suitable for high-temperature processing (e.g., plastics, coatings).
Controlled-Release Fertilizer – Slowly hydrolyzes to provide long-term phosphorus and nitrogen nutrition.
Environmentally Friendly – Halogen-free, complying with RoHS and REACH regulations.
Versatile Compatibility – Works well with polymers, resins, and intumescent coatings.

Applications

1. Flame Retardants

Plastics & Polymers – Used in PP, PE, PVC, and epoxy resins to meet UL94 V-0 standards.

Coatings & Textiles – Enhances fire resistance in paints, fabrics, and construction materials.

Intumescent Systems – Combined with melamine and pentaerythritol for fireproofing steel structures.

2. Agriculture

Slow-Release Fertilizer – Prevents phosphorus fixation in soil, improving crop uptake.

Liquid Fertilizer Additive – Enhances micronutrient availability (e.g., Zn, Fe).

3. Industrial Uses

Adhesives & Ceramics – Acts as a binder and flame retardant.

Water Treatment – Sequesters metal ions in cooling systems

Quality Assurance

Batch-Specific COA – Includes purity, solubility, and heavy metal analysis.

Regulatory Compliance – Meets ISO 9001

Safety & Handling

Hazard Classification – Non-toxic; may cause mild eye/skin irritation Storage – Keep in a dry, cool place (<30°C); shelf life of 24 months.
First Aid – Rinse with water if contacted; seek medical advice if inhaled.