Date published: 2025-12-18

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Ammonium polyphosphate (CAS 68333-79-9)

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CAS Number:
68333-79-9
Molecular Formula:
(NH4PO3)n
For Research Use Only. Not Intended for Diagnostic or Therapeutic Use.
* Refer to Certificate of Analysis for lot specific data.

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Ammonium polyphosphate finds extensive utility across diverse scientific research applications. It serves as a vital buffering agent in biochemical and physiological experiments, while also assuming a pivotal role in cell culture preparation. Moreover, this compound is employed as a reagent for organic compound synthesis and as a catalyst in polymer production. Mechanistically, Ammonium polyphosphate operates similarly to other phosphates. Acting as an acid, it liberates hydrogen ions (H+) upon dissolution in water. These hydrogen ions, in turn, serve as catalysts for a wide range of chemical reactions. Furthermore, the presence of the ammonium component within the compound bestows buffering properties, effectively stabilizing the pH of the solution at hand.


Ammonium polyphosphate (CAS 68333-79-9) References

  1. Improved pyrolysis behavior of ammonium polyphosphate-melamine-expandable (APP-MEL-EG) intumescent fire retardant coating system using ceria and dolomite as additives for I-beam steel application.  |  Zoleta, JB., et al. 2020. Heliyon. 6: e03119. PMID: 31909279
  2. Ammonium Polyphosphate with High Specific Surface Area by Assembling Zeolite Imidazole Framework in EVA Resin: Significant Mechanical Properties, Migration Resistance, and Flame Retardancy.  |  Wang, J., et al. 2020. Polymers (Basel). 12: PMID: 32131420
  3. Cross-Linking Modification of Ammonium Polyphosphate via Ionic Exchange and Self-Assembly for Enhancing the Fire Safety Properties of Polypropylene.  |  Pan, Y., et al. 2020. Polymers (Basel). 12: PMID: 33238514
  4. An Intelligent Fire-Protection Coating Based on Ammonium Polyphosphate/Epoxy Composites and Laser-Induced Graphene.  |  Yang, W., et al. 2021. Polymers (Basel). 13: PMID: 33806971
  5. Preparation of ammonium polyphosphate and dye co-intercalated LDH/polypropylene composites with enhanced flame retardant and UV resistance properties.  |  Liu, Y., et al. 2021. Chemosphere. 277: 130370. PMID: 34384194
  6. Acoustic Performance and Flame Retardancy of Ammonium Polyphosphate/Diethyl Ethylphosphonate Rigid Polyurethane Foams.  |  Zhang, H., et al. 2022. Polymers (Basel). 14: PMID: 35160410
  7. Micro-Nanometer Particle Composition and Functional Design of Surface Nano-Structured Ammonium Polyphosphate and Its Application in Intumescent Flame-Retardant Polypropylene.  |  Wu, X., et al. 2022. Nanomaterials (Basel). 12: PMID: 35214935
  8. Surface Modification of Ammonium Polyphosphate for Enhancing Flame-Retardant Properties of Thermoplastic Polyurethane.  |  Wang, Z., et al. 2022. Materials (Basel). 15: PMID: 35329442
  9. Bio-based arginine surface-modified ammonium polyphosphate: an efficient intumescent flame retardant for epoxy resin.  |  Cheng, C., et al. 2022. RSC Adv. 12: 9223-9237. PMID: 35424861
  10. Highly efficient removal of cadmium from aqueous solution by ammonium polyphosphate-modified biochar.  |  Huang, K., et al. 2022. Chemosphere. 305: 135471. PMID: 35764111
  11. Recycling and applications of ammonium polyphosphate/polycarbonate/acrylonitrile butadiene styrene by laser-scribing technologies for supercapacitor electrode materials.  |  Yang, W., et al. 2022. RSC Adv. 12: 19055-19062. PMID: 35865584
  12. Synergistic Flame Retardancy of Phosphatized Sesbania Gum/Ammonium Polyphosphate on Polylactic Acid.  |  Zhang, Q., et al. 2022. Molecules. 27: PMID: 35897921
  13. Mechanically robust and flame-retardant poly(lactide)/poly(butylene adipate-co-terephthalate) composites based on carbon nanotubes and ammonium polyphosphate.  |  Wang, P., et al. 2022. Int J Biol Macromol. 221: 573-584. PMID: 36087754

Ordering Information

Product NameCatalog #UNITPriceQtyFAVORITES

Ammonium polyphosphate, 1 g

sc-492821
1 g
$189.00

Ammonium polyphosphate, 5 g

sc-492821A
5 g
$515.00