Ammonium Phosphate Monobasic (Flame Retardant Grade)
CAS Number: 7722-76-1
Ammonium phosphate monobasic (MAP) flame retardant grade is an inorganic phosphorus-nitrogen compound used in fire-retardant treatments for cellulosic materials, wood, and paper. It acts by forming a phosphate ester with cellulose hydroxyl groups upon heating, catalyzing dehydration and char formation rather than volatile flammable pyrolysis products. MAP is a key component in aqueous fire-retardant impregnation solutions and intumescent coatings.
Technical Specifications
| appearance | White crystalline powder or granules |
| purity (%) | ≥98 |
| moisture (%) | ≤0.5 |
| pH (1% solution) | 4.0–4.5 |
| nitrogen content (%) | 12.2 |
| phosphorus content (%) | 26.9 |
Applications
- Wood and timber fire-retardant impregnation treatments
- Paper and cardboard flame-retardant coating solutions
- Textile and fabric fire-retardant finishing baths
- Intumescent coating formulations as acid source component
- Agricultural and grassland fire suppression chemicals
Key Features
- High water solubility enables easy preparation of aqueous fire-retardant impregnation solutions
- Dual phosphorus-nitrogen mechanism provides both condensed-phase char formation and gas-phase dilution
- Cost-effective inorganic FR suitable for high-volume wood and textile treatment applications
- Non-halogen formula compliant with green building and environmental certification standards
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CAS Number
7722-76-1
Category
Fire Retardant ChemicalsAvailability
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