DOPO Flame Retardant High Phosphorus CAS 35948-25-5, Reactive Halogen-Free for Epoxy CCL V-0 UL94
DOPO flame retardant (CAS 35948-25-5), chemical name 9,10-Dihydro-9-oxa-10-phosphaphenanthrene-10-oxide, is high phosphorus reactive halogen-free organophosphorus powder. Its high phosphorus content delivers powerful flame inhibition efficiency. The active P-H functional group reacts with epoxy resin during curing and covalently bonds into the crosslinked network, eliminating migration and blooming. It is widely formulated into epoxy resin and copper clad laminate to meet UL94 V-0 flame retardan
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: High phosphorus reactive halogen-free additive for epoxy and CCL to reach UL94 V-0
Key Performance & TDSThis high phosphorus DOPO possesses high phosphorus content, enabling effective flame suppression at reasonable loading dosage. The reactive P-H group chemically grafts onto epoxy molecular chains, so the flame retardant will not separate or leach out over time. It helps cured epoxy and copper clad laminate substrates pass UL94 V-0 vertical burning test. It exhibits excellent thermal stability and high glass transition temperature, suitable for high temperature pressing and soldering processes of CCL. Halogen-free structure generates low smoke and no corrosive halogen gas under combustion. It maintains stable dielectric properties and insulation performance required for electronic base materials. Fine crystal powder ensures homogeneous dispersion inside epoxy resin during compounding.
Applications
- Epoxy resin formulation for copper clad laminate
- Halogen-free CCL prepreg resin requiring UL94 V-0
- High phosphorus reactive flame retardant epoxy system
- Electronic substrate thermosetting resin
- PCB base material with strict flame safety standard
ComplianceThis product complies with RoHS and REACH standards, suitable for global export electronic raw material projects.
Why Choose JSYWe supply factory direct high phosphorus DOPO flame retardant for epoxy and CCL. Consistent phosphorus content, stable batch quality, flexible MOQ and professional formulation support to achieve UL94 V-0 certification.
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