01Overview
Ammonium Polyphosphate Type‑Ⅱ
Ammonium Polyphosphate Type‑II serves as the core acid source ingredient for intumescent fireproof coatings. When compounded with pentaerythritol and melamine, it forms a dense insulating carbon layer that delivers halogen-free smoke suppression and superior fireproofing performance. The recommended dosage is 20%-35% of the total coating mass; store the product in a moisture-proof environment and use it exclusively in dedicated fireproof formulations.
Model:Ammonium Polyphosphate Type‑Ⅱ Category:Fireproof & Thermal Insulation Materials

02Introduction
Ammonium Polyphosphate Type‑Ⅱ
Ammonium Polyphosphate Type‑II serves as the core acid source ingredient for intumescent fireproof coatings. When compounded with pentaerythritol and melamine, it forms a dense insulating carbon layer that delivers halogen-free smoke suppression and superior fireproofing performance. The recommended dosage is 20%-35% of the total coating mass; store the product in a moisture-proof environment and use it exclusively in dedicated fireproof formulations.
03Features
Introduction
Core acid source component; forms a dense insulating charcoal layer when blended with polyols and melamine.
Features excellent halogen-free smoke suppression, greatly enhancing building fire safety.
A 20%-35% addition rate delivers highly effective fire and thermal insulation.
Must be stored in dry conditions and used solely in certified intumescent fireproof coatings.
04Specifications
Technical Specs
| CAS Number | 68333‑79‑9 |
| Molecular Formula | (NH₄PO₃)ₙ |
05Applications
Applications
Coatings, water-based paints, stone paints, putty, mortar, fireproof coatings & building material systems
07More Categories



