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P-Xylylen-Bis-Diphenylphosphinoxid | DPOPD | CAS No. 38661-56-2

Structure Formula
Formula C32H28O2P2
CAS No. 38661-56-2
Synonyms XDPO; DPOPD; P-Xylylen-Bis-Diphenylphosphinoxid; 1,4-Bis- (Diphenyl-Phosphinoylmethyl)-Benzene; Phosphine oxide, 1,1'-[1,4-phenylenebis(methylene)]bis[1,1-diphenyl-


Chemical Name: P-Xylylen-Bis-Diphenylphosphinoxid


P-Xylylen-Bis-Diphenylphosphinoxid (CAS No. 38661-56-2) or known as XDPO or DPOPD is a high performance halogen-free flame retardant, chemical name p-diphenyl bisdiphenyl phosphine oxide, the structure is similar to DOPO derivatives, melting point 334 degrees, decomposition temperature 379 degrees (5%). Because of its high temperature resistance, high melting point, high TG and other characteristics, XDPO is used in the field of electronic materials and spinning. Suitable for high order copper clad plate, PA, epoxy resin, CCL, FCCL, FR4, etc. It is also used as photoinitiators, used as intermediate in organic synthesis and flame retardant for 5G substrates.


Particle size is allowed to be customized according to clients’ requirements.


Features of P-Xylylen-Bis-Diphenylphosphinoxid (CAS No. 38661-56-2) from UniVOOK Chemical:


–High efficiency flame retardant;

–Low thermal expansion rate, High heat resistance;

–High glass conversion temperature;

–Low dielectric constant;

–Low dielectric loss.




Find more flame retardant solutions from us: Flame Retardant EPO

Shelf Life

Under proper storage conditions, the shelf life is 12 months

Health & Safety

For more details and safety recommendations regarding the use of the product, please consult our Material Safety Data Sheet (MSDS) of P-Xylylen-Bis-Diphenylphosphinoxid (CAS No. 38661-56-2), or contact with our Product Manager.


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