Date published: 2025-10-20

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Tris(2,4-di-tert-butylphenyl) Phosphite (CAS 31570-04-4)

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CAS Number:
31570-04-4
Molecular Weight:
646.94
Molecular Formula:
C42H63O3P
For Research Use Only. Not Intended for Diagnostic or Therapeutic Use.
* Refer to Certificate of Analysis for lot specific data.

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Tris(2,4-di-tert-butylphenyl) phosphite functions as a stabilizer and antioxidant in various polymer and plastic applications. It acts by scavenging free radicals and preventing oxidation reactions, thereby extending the shelf life and maintaining the quality of the polymer or plastic material. At the molecular level, the phosphite compound reacts with and neutralizes free radicals, which are known to cause degradation and deterioration of polymers. By inhibiting the oxidation process, it helps to maintain the structural integrity and performance of the material, making it suitable for long-term use in various industrial and commercial applications. Tris(2,4-di-tert-butylphenyl) phosphite is able to chelate metal ions further enhances its antioxidant properties, contributing to the stability and durability of the polymer or plastic product.


Tris(2,4-di-tert-butylphenyl) Phosphite (CAS 31570-04-4) References

  1. Phosphite additives and their transformation products in polyethylene packaging for gamma-irradiation.  |  Carlsson, DJ., et al. 2001. Food Addit Contam. 18: 581-91. PMID: 11407757
  2. Migration of antioxidant additives from various polyolefinic plastics into oleaginous vehicles.  |  Marcato, B., et al. 2003. Int J Pharm. 257: 217-25. PMID: 12711176
  3. [Detection of tris(2,4-di-tert-butylphenyl)phosphite (Irgafos 168, antioxidant in plastics) and its oxide in commercial frozen vegetables].  |  Tanaka, Y., et al. 2003. Shokuhin Eiseigaku Zasshi. 44: 181-5. PMID: 14606426
  4. Kinetic and mechanistic investigation of the substitution reactions of four and five co-ordinated rhodium stibine complexes with a bulky phosphite.  |  Hennion, C., et al. 2013. Dalton Trans. 42: 14134-9. PMID: 23942428
  5. Small-sized microplastics and pigmented particles in bottled mineral water.  |  Oßmann, BE., et al. 2018. Water Res. 141: 307-316. PMID: 29803096
  6. Unexpectedly High Concentrations of a Newly Identified Organophosphate Ester, Tris(2,4-di- tert-butylphenyl) Phosphate, in Indoor Dust from Canada.  |  Liu, R. and Mabury, SA. 2018. Environ Sci Technol. 52: 9677-9683. PMID: 30074770
  7. Rapid mapping of various chemicals in personal care and healthcare products by direct analysis in real time mass spectrometry.  |  Kuki, Á., et al. 2019. Talanta. 192: 241-247. PMID: 30348385
  8. Organophosphite Antioxidants in Indoor Dust Represent an Indirect Source of Organophosphate Esters.  |  Liu, R. and Mabury, SA. 2019. Environ Sci Technol. 53: 1805-1811. PMID: 30657667
  9. Tris(2,4-di-tert-butylphenyl)phosphate: An Unexpected Abundant Toxic Pollutant Found in PM2.5.  |  Shi, J., et al. 2020. Environ Sci Technol. 54: 10570-10576. PMID: 32786564
  10. The Effects of Chain-Extending Cross-Linkers on the Mechanical and Thermal Properties of Poly(butylene adipate terephthalate)/Poly(lactic acid) Blown Films.  |  Azevedo, JVC., et al. 2021. Polymers (Basel). 13: PMID: 34577992
  11. Regiodivergent Palladium-Catalyzed Alkene Difunctionalization Reactions for the Construction of Methylene Cyclobutanes and Methylene Cyclopentanes.  |  Bornowski, EC., et al. 2022. Org Lett. 24: 8208-8212. PMID: 36315977
  12. Discovery of 18 Organophosphate Esters and 3 Organophosphite Antioxidants in Food Contact Materials Using Suspect and Nontarget Screening: Implications for Human Exposure.  |  Wang, L., et al. 2022. Environ Sci Technol. 56: 17870-17879. PMID: 36459588
  13. Effect of Chain Extending Cross-Linkers on the Disintegration Behavior of Composted PBAT/PLA Blown Films.  |  Azevedo, JVC., et al. 2023. Int J Mol Sci. 24: PMID: 36901956
  14. Occurrence and migration of organophosphite and organophosphate esters into food simulants from single-use food packaging in China.  |  Zhou, R., et al. 2023. Environ Pollut. 330: 121782. PMID: 37164220
  15. Global and specific migration of antioxidants from polypropylene films into food simulants.  |  Garde, JA., et al. 1998. J Food Prot. 61: 1000-6. PMID: 9713761

Ordering Information

Product NameCatalog #UNITPriceQtyFAVORITES

Tris(2,4-di-tert-butylphenyl) Phosphite, 100 g

sc-473714
100 g
$51.00