DOPO flame retardant (CAS 35948-25-5), chemical name 9,10-Dihydro-9-oxa-10-phosphaphenanthrene-10-oxide, is reactive halogen-free organophosphorus crystalline powder. It contains active P-H bonds which can react with functional groups in coating and adhesive resin systems. Instead of simple physical blending, it covalently integrates into polymer networks to realize long-lasting flame retardant performance. It is widely used in intumescent coating and structural adhesive formulations, maintainin

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: Reactive halogen-free phosphorus for intumescent coating and adhesive

Key Performance & TDSDOPO participates in crosslinking reaction of coating and adhesive resin, avoiding migration, blooming or powder precipitation on coating surface. Under fire exposure, it promotes char formation to build intumescent protective char layer, blocking heat and oxygen transfer. It delivers high flame retardant efficiency, helps coating and adhesive products meet required flame rating. It has good thermal stability and low smoke release during combustion. The halogen-free structure prevents corrosive halogen gas generation in fire scenarios. Fine crystalline particles disperse evenly in coating slurry, bringing smooth film surface. It has limited negative influence on coating hardness, flexibility and adhesive bonding performance.

Applications

Intumescent fire retardant coating formulation
Epoxy and solvent-based fire-resistant adhesive
Protective fireproof coating for metal and construction substrate
Thermosetting adhesive requiring halogen-free flame retardancy
Functional coating with long-term fire protection requirement

ComplianceThis product complies with RoHS and REACH regulations, suitable for global export coating and adhesive raw material projects.

Why Choose JSYWe supply factory direct DOPO flame retardant for intumescent coating and adhesive. Stable batch purity, good dispersion performance, flexible MOQ and professional formulation technical support for coating and adhesive manufacturers.

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DOPO Flame Retardant for Coating CAS 35948-25-5, Reactive Halogen-Free Phosphorus for Intumescent Coating & Adhesive

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