Reactive, built into the polymer
The P–H group reacts into epoxy and polyester, so it does not migrate.
DESPUÉS
DOPO Flame Retardant Supplier from China
DESPUÉS (9,10-dihydro-9-oxa-10-phosphaphenanthrene 10-oxide) is a reactive phosphorus flame retardant and intermediate used mainly in halogen-free epoxy resins for printed circuit board laminates, and in polyester fibers and other polymers. SUNCHEM supplies DOPO with a batch COA on every shipment; the TDS is sent on request.
CAS 35948-25-5 · C₁₂H₉O₂P · 9,10-Dihydro-9-oxa-10-phosphaphenanthrene 10-oxide
- Lote COA con cada envío
- Muestras para tus ensayos
- Soporte técnico para su prueba
Descripción general del producto & beneficios clave
DOPO carries a reactive P–H bond that adds to epoxy groups, double bonds and carbonyls, so it can be built into the polymer chain rather than blended in. Its largest use is in halogen-free epoxy resins for copper-clad laminates and printed circuit boards; it is also used to make flame-retardant polyester fibers and as an intermediate for DOPO derivatives and other phosphorus flame retardants.
Pureza, melting point and moisture matter because the P–H group is sensitive to oxidation and hydrolysis.
Halogen-free laminates
The basis of many halogen-free epoxy systems for PCBs.
Specified on your terms
We quote against your purity, punto de fusion, moisture and chloride and send the batch COA for each lot.
Especificaciones técnicas
| Parámetro | Valor típico |
|---|---|
| Nombre del producto | DESPUÉS |
| Sinónimos | 9,10-Dihydro-9-oxa-10-phosphaphenanthrene 10-oxide |
| CAS No. | 35948-25-5 |
| EC No. | 252-813-2 |
| Molecular formula | C₁₂H₉O₂P |
| Peso molecular | 216.17 |
| Apariencia | White powder or flakes |
Pureza, punto de fusion, moisture and chloride limits depend on the producer grade and are stated on the TDS and batch COA; the limits for your order are confirmed in the quotation and contract.
Aplicaciones por polímero
Where DOPO is used, and what to confirm before you switch supply.
Halogen-free epoxy for PCB laminates
Reacted with epoxy or phenolic novolac to make phosphorus-containing resins for copper-clad laminates.
Check before trial
- Resin route
- Purity and chloride
- Monthly volume
Flame-retardant polyester fibers
Used to make phosphorus-containing comonomers for flame-retardant PET fibers.
Check before trial
- Polymer route
- Pureza
- Bag size
Derivados DOPO
An intermediate for DOPO-HQ and other phosphorus flame retardants.
Check before trial
- Synthesis step
- Impurity limits
- Sample for trials
Selection & comparación
Choosing the right DOPO grade
| Su requisito | Lo que normalmente funciona |
|---|---|
| PCB laminate epoxy | High-purity DOPO with low chloride |
| Polyester fiber comonomers | Specify purity and melting point |
| Intermediate for derivatives | Standard grade |
| Replacing an existing supplier | Envíe su TDS o COA actual; we quote against the parameters you approve |
embalaje & almacenamiento
embalaje
Tell us the bag or drum size and pallet requirements you need; we confirm the packaging with the quotation.
Almacenamiento
Keep bags sealed in a cool, dry store; DOPO is sensitive to moisture and oxidation.
Desde el primer correo electrónico hasta el suministro aprobado
Name the end use
Name the polymer and the fire rating you must meet — UL 94 class and thickness, LOI or cable standard.
Compara los números que importan
Pureza, punto de fusion, moisture and chloride.
Protect the material
Keep bags sealed and dry; moisture and air degrade the P–H group.
Trial, then lock the spec
Compound a trial batch, run your fire and mechanical tests, and keep the approved lot COA as the reference.
Cuéntanos tu requerimiento. Coincidimos con el grado.
Cuéntanos el polímero, the fire rating you need, the quantity and the destination port. Add your current specification and we will quote against it.
| Información | Ejemplo |
|---|---|
| Solicitud | PCB epoxy, polyester fiber, derivatives |
| Especificación requerida | Pureza, punto de fusion, cloruro |
| embalaje | Bag or drum size; pallets |
| Cantidad | Muestra / trial order / volumen anual |
| Destino | País y puerto |
| Documentos necesarios | COA, Ficha de datos de seguridad (MSDS), SDT, RoHS/REACH |
Related products
DOPO FAQ
¿Para qué se utiliza DOPO??
Mainly to make halogen-free phosphorus-containing epoxy resins for PCB laminates; also for flame-retardant polyester fibers and as an intermediate for other phosphorus flame retardants.
Is DOPO additive or reactive?
Reactive: its P–H group bonds into the polymer.
Which parameters should I compare between offers?
Pureza, punto de fusion, moisture and chloride.
Can I get the TDS?
Sí. Send an inquiry with your application and we email the TDS.
