Date published: 2026-4-29

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6,6′-[(3,3′-Di-tert-butyl-5,5′-dimethoxy-1,1′-biphenyl-2,2′-diyl)bis(oxy)]bis(dibenzo[d,f][1,3,2]dioxaphosphepin) (CAS 121627-17-6)

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Alternate Names:
BiPhePhos
CAS Number:
121627-17-6
Molecular Weight:
786.78
Molecular Formula:
C46H44O8P2
For Research Use Only. Not Intended for Diagnostic or Therapeutic Use.
* Refer to Certificate of Analysis for lot specific data.

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6,6′-[(3,3′-Di-Tert-Butyl-5,5′-Dimethoxy-1,1′-Biphenyl-2,2′-Diyl)Bis(Oxy)]Bis(Dibenzo[D,F][1,3,2]Dioxaphosphepin) functions as a phosphorus-based flame retardant in various polymer materials. It acts by forming a protective char layer when exposed to heat or flame, which insulates the underlying material and reduces the spread of fire. The compound′s mechanism of action involves the release of phosphorus radicals during the combustion process, which then react with the polymer matrix to form a stable and protective layer. This layer acts as a barrier, preventing the further propagation of the fire and reducing the release of flammable gases. 6,6′-[(3,3′-Di-Tert-Butyl-5,5′-Dimethoxy-1,1′-Biphenyl-2,2′-Diyl)Bis(Oxy)]Bis(Dibenzo[D,F][1,3,2]Dioxaphosphepin) molecular structure allows it to effectively disperse within the polymer matrix, ensuring uniform flame-retardant properties throughout the material.

Ordering Information

Product NameCatalog #UNITPriceQtyFAVORITES

6,6′-[(3,3′-Di-tert-butyl-5,5′-dimethoxy-1,1′-biphenyl-2,2′-diyl)bis(oxy)]bis(dibenzo[d,f][1,3,2]dioxaphosphepin), 100 mg

sc-227103
100 mg
$82.00