DOPO flame retardant (CAS 35948-25-5), chemical name 9,10-Dihydro-9-oxa-10-phosphaphenanthrene-10-oxide, is reactive halogen-free organophosphorus powder customized for printed circuit board and copper clad laminate manufacturing. Its active P-H functional group reacts with epoxy resin during curing and covalently integrates into the crosslinked polymer network. This chemical bonding avoids migration and blooming issues commonly seen in additive flame retardants. It retains excellent dielectric

Product Detail

Product DetailsChemical IdentityProduct Name: 9,10-Dihydro-9-oxa-10-phosphaphenanthrene-10-oxide, DOPO CAS No.: 35948-25-5 Chemical Type: Reactive halogen-free organophosphorus compound Physical Form: White crystalline powder Core Feature: Halogen-free reactive phosphorus for printed circuit board and CCL

Key Performance & TDSDOPO is chemically grafted into epoxy molecular chains rather than simple physical mixing. It provides effective flame inhibition and enables CCL substrates to achieve UL94 V-0 rating. It features superior thermal stability and high glass transition temperature, adapting to multi-layer PCB pressing and high-temperature soldering procedures. The halogen-free composition produces low smoke and no corrosive halogen gas under combustion. It maintains low dielectric constant and reliable insulation performance, which are essential for high-speed PCB circuits. Low impurity content minimizes substrate discoloration and potential electrical failure risk.

Applications

Copper clad laminate substrate epoxy resin for PCB
Prepreg formulation for multi-layer printed circuit board
Halogen-free PCB base material production
High-speed circuit board epoxy resin system
Thermosetting resin for electronic circuit substrates

ComplianceThis product complies with RoHS and REACH standards, suitable for global export of PCB and CCL raw materials.

Why Choose JSYWe supply factory direct DOPO flame retardant for PCB and CCL. Stable purity, uniform particle size, flexible MOQ and professional formulation technical support for copper clad laminate producers.

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DOPO Flame Retardant for PCB CAS 35948-25-5, Halogen-Free Reactive Phosphorus for Printed Circuit Board CCL

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Jishengya Technology

Shenzhen Jishengya Technology Co., Ltd. is located in Shenzhen, a special economic zone, and is a comprehensive technology enterprise integrating independent R&D, production and sales.