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Ammonium Polyphosphate
Hosea Chem® supplies Ammonium Polyphosphate (APP) in multiple grades for plastics, fire-retardant coatings, textile and wood treatment, and other industrial applications. Send Inquiry
Product Description
Ammonium Polyphosphate, CAS No.: 68333-79-9
Ammonium Polyphosphate (APP) is a phosphorus- and nitrogen-containing compound widely used as a halogen-free flame retardant. Depending on its grade, solubility, polymerization characteristics and formulation, APP can be used in thermoplastics, polyolefins, intumescent coatings, water-based fire-retardant systems and other industrial applications.
Under suitable fire conditions, APP can promote the formation of a protective char layer. In intumescent formulations, this layer helps reduce heat transfer and restrict the release of combustible decomposition products, contributing to flame-retardant performance.
Hosea Chem® supports inquiries for four GREATBAY APP grades: XZ-EF001, XZ-EF002, XZ-EFW and XZ-EF750. These grades serve different application requirements, from low-water-solubility flame-retardant systems for polymer processing to highly water-soluble products for aqueous formulations.
Grade selection should be based on the target polymer or coating system, water solubility, thermal stability, phosphorus and nitrogen content, processing conditions and required fire-performance standards.
Available Grades
GREATBAY XZ-EF001
GREATBAY XZ-EF001 is listed as an Ammonium Polyphosphate grade in the GREATBAY product range.
Its detailed technical specifications and recommended applications should be confirmed against the current manufacturer's TDS and SDS before selection.
GREATBAY XZ-EF002
GREATBAY XZ-EF002 is a low-water-solubility Ammonium Polyphosphate grade designed for flame-retardant applications.
According to the published GREATBAY product information, it has a decomposition temperature above 270°C and a water solubility below 0.5 g/100 mL at 25°C. It is used in plastics such as PP, PE and PVC, polyester, rubber and intumescent fire-protection coatings.
The manufacturer lists Exolit® AP 422 as an equivalent grade. Performance equivalence should be confirmed through technical comparison and application testing.
GREATBAY XZ-EFW
GREATBAY XZ-EFW is a water-soluble Ammonium Polyphosphate grade supplied as a white powder or lumps. It features high water solubility, high phosphorus and nitrogen content, and a near-neutral aqueous solution.
It is intended for water-soluble fire-retardant coatings and aqueous treatment of textiles, paper, fibers and wood. Other stated applications include concentrated compound fertilizers, feed additives, liquid detergents, adhesives and ion-exchange formulations, subject to application-specific requirements.
GREATBAY XZ-EF750
GREATBAY XZ-EF750 is an Ammonium Polyphosphate-based flame-retardant grade intended for thermoplastics, particularly polypropylene, polyethylene, ethylene-vinyl acetate copolymers and polyolefin blends.
It is suitable for evaluation in extrusion and injection-molding applications and can also be used in selected hot-melt adhesives and coating compounds.
The manufacturer lists Exolit® AP 750 as an equivalent grade. The equivalence should be validated for the intended formulation and performance requirements.
Chemical Properties
CAS No.: 68333-79-9
Chemical Name: Ammonium Polyphosphate
Molecular Formula: (NH₄PO₃)ₙ
Chemical Type: Inorganic phosphorus- and nitrogen-containing compound
Appearance: White powder; some grades may be supplied as lumps
Primary Function: Flame retardant
Flame-Retardant Mechanism: Promotes protective char formation in suitable formulations
Solubility: Grade dependent, ranging from low-water-solubility polymeric grades to highly water-soluble grades
Thermal Stability: Grade dependent
Technical Specifications
The following table consolidates the available specifications for the different grades. Values are presented by grade and should not be treated as interchangeable.
GREATBAY XZ-EF002
| Item | Specification |
|---|---|
| Appearance | White powder |
| P₂O₅ Content | ≥71% |
| Nitrogen Content (N) | ≥14% |
| Decomposition Temperature | >270°C |
| Water Content | <0.25% |
| Water Solubility at 25°C | <0.5 g/100 mL |
| pH (10% Aqueous Solution) | 6.5–7.5 |
| Viscosity at 25°C | <20; confirm unit and test method |
| Particle Size | 325–500 mesh |
GREATBAY XZ-EFW
| Item | Specification |
|---|---|
| Appearance | White powder or lumps |
| P₂O₅ Content | ≥46% |
| Nitrogen Content (N) | ≥24% |
| pH (1% Aqueous Solution) | 6.5–8.5 |
| Water Solubility at 25°C | ≥45 g/100 mL |
| Water-Insoluble Matter | ≤0.01% |
GREATBAY XZ-EF750
| Item | Specification |
|---|---|
| Appearance | White powder |
| Phosphorus Content (P) | 21 ± 1% |
| Nitrogen Content (N) | 18 ± 1% |
| Density | Approximately 1.8 g/cm³ |
| Bulk Density | Approximately 0.4 g/cm³ |
| Decomposition Temperature | >250°C |
| Water / Moisture Content | Approximately 0.5% |
| pH | 5.0–7.5 |
| Particle Size | Approximately 10 μm |
| Crystal Phase | Phase II |
GREATBAY XZ-EF001
Detailed guaranteed specifications for XZ-EF001 are not included in the currently available source information. Please request the current manufacturer's TDS and COA for appearance, phosphorus and nitrogen content, water solubility, thermal stability, particle size and recommended applications.
Applications
1. Plastics and Thermoplastics
APP grades selected for polymer processing can be used in polypropylene (PP), polyethylene (PE), PVC, polyester and other compatible polymer systems. The appropriate grade depends on thermal stability, water resistance, dispersion and the target flame-retardant performance.
2. Polypropylene and Polyolefin Compounds
GREATBAY XZ-EF750 is intended for evaluating in polypropylene, polyethylene, EVA copolymers and polyolefin blends. It can be incorporated into suitable formulations processed by extrusion or injection molding.
3. Intumescent Fire-Retardant Coatings
Low-water-solubility APP grades such as XZ-EF002 can be used in suitable intumescent coating formulations. Under fire conditions, APP can contribute to the formation of a protective char layer.
4. Water-Soluble Fire-Retardant Coatings
GREATBAY XZ-EFW is suitable for water-soluble fire-retardant coating systems where high solubility and a near-neutral aqueous solution are required.
5. Textile, Fiber, Paper and Wood Treatment
Aqueous APP formulations can be used for fire-retardant treatment of textiles, fibers, paper and wood. Treatment performance, durability and compliance with applicable standards should be established through application testing.
6. Hot-Melt Adhesives and Coating Compounds
GREATBAY XZ-EF750 can be evaluated in hot-melt adhesives and coating compounds where flame-retardant functionality is required.
7. Fertilizers and Other Industrial Formulations
The highly water-soluble XZ-EFW grade is also listed for selected concentrated compound fertilizer, feed additive, liquid detergent, adhesive and ion-exchange applications. Confirm grade suitability, applicable regulations and required quality standards before use, particularly in agricultural and feed-related applications.
Packaging
25kg/bag.
Production Capacity
8000MT/year.
Storage Requirements
Store Ammonium Polyphosphate in sealed packaging in a dry, well-ventilated area. Protect the product from moisture and contamination.
Keep containers closed when not in use.
Bulk Supply from China
Hosea Chem® supports bulk supply inquiries for Ammonium Polyphosphate (APP) from China for industrial customers and distributors.
Available grades include GREATBAY XZ-EF001, XZ-EF002, XZ-EFW and XZ-EF750, subject to confirmation of availability.
Contact Hosea Chem for current pricing, MOQ, technical specifications, TDS, SDS, COA, packaging options and delivery schedules. Please specify your intended application, target grade, required quantity and performance requirements to help identify the appropriate APP grade.