Molekula
Ammonium polyphosphate Phase I (APP-I)
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 2000 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
Ammonium polyphosphate Phase I (APP-I) is a non-halogenated, intumescent flame retardant widely used in plastics, textiles, and coatings to improve fire resistance by reducing flammability and smoke generation. It releases ammonia and phosphoric acid upon heating, forming a protective char layer that insulates materials from heat and oxygen. APP-I has a CAS number of 68333-79-9 and is stored at -15 to -20 °C for stability. The product carries a signal word of "Warning" for safety handling. Molekula supplies Ammonium polyphosphate Phase I from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Overview
Ammonium polyphosphate Phase I (APP-I) is a non-halogenated, intumescent flame retardant widely used in plastics, textiles, and coatings to improve fire resistance by reducing flammability and smoke generation. It releases ammonia and phosphoric acid upon heating, forming a protective char layer that insulates materials from heat and oxygen. APP-I has a CAS number of 68333-79-9 and is stored at -15 to -20 °C for stability. The product carries a signal word of "Warning" for safety handling. Molekula supplies Ammonium polyphosphate Phase I from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Pricing & pack sizes
Pricing on request — packs available from research to bulk quantities.
Need a different quantity or pack?
Tell us the quantity you actually need — drums, IBCs, sacks or a one-off bulk lot. We'll manufacture or source it and come back with a price, usually within one working day.
Prices exclude VAT/sales tax and shipping.
Specifications
| Property | Value |
|---|---|
| Appearance | White powder |
| Identification | Conforms to reference |
| pH | 6-9 |
| P2O5 | ≥68% |
| Nitrogen (N) | ≥13% |
| Degree of polymerisation | ≥50 |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | -15 to -20 °C |
| Acidity | Neutral |
Identification
| Property | Value |
|---|---|
| SKU | 90038314 |
| CAS Number | 68333-79-9 |
| Molecular Formula | Polymer |
| Molecular Weight | Polymer |
| SMILES | [NH4+].O=P([O-])(O)O |
| TSCA Listed | Yes |
| HTS Code | 2835.39.5000 |
| Tariff Code | 2835390000 |
Safety & GHS
-
Health Hazard
GHS07
Hazard statements
- H302 Harmful if swallowed
- H319 Causes serious eye irritation
Precautionary statements
- P264 Wash thoroughly after handling
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P301+P330+P331 IF SWALLOWED: Rinse mouth. Do NOT induce vomiting
- P305+P351+P338 IF IN EYES: Rinse continuously with water for several minutes. Remove contact lenses if present and easy to do, continue rinsing
- P501 Dispose of contents/container to an approved waste disposal plant
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, Portuguese, Spanish.
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Synonyms
No alternate names recorded for this product.
Frequently asked questions
What is Ammonium Polyphosphate Phase I (APP-I) commonly used for?
APP-I is primarily used as an intumescent flame retardant in plastics, coatings, textiles, and construction materials to reduce flammability and improve fire resistance.
What is the chemical formula and molecular weight of APP-I?
APP-I is a polymeric compound with a variable formula based on its degree of polymerization; exact molecular weight is not applicable due to its polymeric nature.
How should APP-I be stored?
APP-I should be stored at **-15 to -20°C** in a cool, dry place, protected from moisture and direct sunlight to maintain stability.
What grades or purity levels of APP-I does Molekula supply?
Molekula supplies **industrial-grade APP-I**, optimized for flame retardant applications in bulk formulations.
Can Molekula supply APP-I in bulk quantities?
Yes, Molekula can supply APP-I in **bulk quantities**, with packaging options tailored to customer requirements (e.g., drums, bags, or big bags).
What documentation comes with an order of APP-I?
Each order includes a **Certificate of Analysis (CoA)**, **Material Safety Data Sheet (MSDS)**, and **batch-specific documentation** for traceability and compliance.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.