DOPO Flame Retardant CAS 35948-25-5, Reactive Halogen-Free Phosphorus for Epoxy Resin CCL PCB
DOPO flame retardant (CAS 35948-25-5), chemical name 9,10-Dihydro-9-oxa-10-phosphaphenanthrene-10-oxide, is reactive halogen-free phosphorus flame retardant. It can chemically bond into epoxy resin molecular chain during curing, delivering lasting flame retardant performance without migration. Widely used for copper clad laminate and printed circuit board raw materials, it meets strict flame safety requirements of electronic base materials.
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: Reactive phosphorus for epoxy resin, CCL and PCB
Key Performance & TDSDOPO has reactive P-H bond, which participates in epoxy crosslinking reaction and covalently grafts onto polymer network. It avoids blooming and migration issues common with additive-type flame retardants. High phosphorus content provides effective flame suppression, helps epoxy CCL reach UL94 V-0 rating. It brings good thermal stability, high glass transition temperature and low smoke release. Halogen-free structure prevents corrosive gas release during combustion, maintaining dielectric properties essential for PCB base material.
Applications
- Epoxy resin system for copper clad laminate
- Printed circuit board substrate raw materials
- Electronic epoxy thermosetting resin
- High performance halogen-free electronic base material
- Prepreg resin for PCB manufacturing
ComplianceThis product complies with RoHS and REACH standards, suitable for global electronic raw material export.
Why Choose JSYWe supply factory direct DOPO flame retardant for epoxy, CCL and PCB. Consistent high purity, stable batch quality, flexible MOQ and professional formulation technical support for electronic base material manufacturers.
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