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DOPO

Phosphorus-containing reactive intermediate used in flame-retardant resin and polymer development.

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ZXCHEM China supplier illustration of DOPO, white powder or granules
PRODUCT IDENTIFICATION

DOPO at a Glance

ZXCHEM is a DOPO supplier and exporter in China, CAS 35948-25-5. It is a phosphorus-containing reactive intermediate used in flame-retardant resin and polymer development. It is supplied as white powder or granules; available grade: ≥99.0%.

CAS No.35948-25-5
Synonyms9,10-Dihydro-9-oxa-10-phosphaphenanthrene 10-oxide
Assay / Grade≥99.0%
EC / EINECS252-813-7
HS Code293499 (indicative)
Dangerous Goods ClassNot regulated · ADR/IMDG/IATA
AppearanceWhite powder or granules
MF (component)C12H9O2P
MW (component)216.18 g/mol

Request a free sample for testing.

Standard lead time is approximately 14 days from order confirmation.

TECHNICAL DATA

DOPO Specifications

ParameterSpecification
Appearance
White powder or granules
Assay
≥99.0 %
Melting range
116–120 °C
Iron
≤20 mg/kg
Zinc
≤20 mg/kg

Specifications apply to the stated grade. HS codes are indicative; final customs classification follows the shipment and destination requirements. Safety and transport entries refer to the matched reference material described in the SDS.

Commercial Information

OriginChina
MOQ1,000 kg
Packing20 kg bags.
Lead timeApproximately 14 days from order confirmation
SamplesContact us for free samples

Storage & Shipping

Storage Conditions

Store closed in a cool, dry, ventilated place, protected from moisture and incompatible oxidizers.

Packaging integrity

Inspect the closure and liner before receipt. Keep the original label and reseal opened containers to prevent contamination.

Packaging

20 kg bags.

Handling & Protection

Review the grade SDS before transfer, sampling or processing. Use suitable ventilation, protective equipment and compatible handling equipment.

What Is DOPO?

DOPO contains a reactive phosphorus-hydrogen group in a cyclic structure. It can be incorporated into appropriately designed resin reactions or used to prepare phosphorus-containing derivatives. The supplied grade controls assay, melting range and trace iron and zinc. Reaction design, process temperature and compatibility with the base resin determine its use. Fire performance must be established in the finished polymer with the required test method; raw-material assay alone does not predict a flame rating.

The ≥99.0% grade is supplied as white powder or granules. The specification table, TDS and SDS on this page cover the main purchasing parameters. For a quotation, send the application, quantity and destination.

FORMULATION

DOPO Applications

Epoxy resin development

Evaluate DOPO in reactive phosphorus-containing epoxy systems. Review reaction conditions, resin viscosity, curing behavior and mechanical properties together with the fire test specified for the finished material.

Flame-retardant intermediates

Use DOPO as an intermediate for phosphorus-containing derivatives. Confirm reaction selectivity, residual starting material and downstream purification before assigning performance targets to the derivative or final formulation.

Polymer modification

Assess compatible DOPO-derived chemistry for polymer modification. Thermal stability, additive migration, color and processing requirements should be considered alongside fire performance in a representative formulation trial.

WHY ZXCHEM

Why Source DOPO from ZXCHEM

Combined chemical orders

Source several chemical raw materials through one ZXCHEM contact. We coordinate product selection, quotations and suitable consolidated shipments so you can plan the order with one team.

Dedicated R&D Laboratory

Discuss specifications, sample results and application questions with our technical team. Our dedicated R&D laboratory supports product testing and helps clarify material selection.

Experienced Chemical Logistics

ZXCHEM has more than 30 years of experience in dangerous-goods transportation. We coordinate suitable shipments through logistics companies in which we hold equity interests in Qingdao, Shanghai, Guangzhou and Tianjin.

Dedicated Purchasing Support

Your account manager follows the order from quotation and contract signing through shipment and after-sales support. One contact coordinates technical documents, commercial details and delivery updates.

BUYER FAQ

DOPO FAQ

What grade of DOPO is listed?

The listed grade is ≥99.0%, supplied as white powder or granules. The specification table and TDS list the quality limits. Tell us any additional method or impurity requirements when you inquire.

Can I request an evaluation sample of DOPO?

Yes. Send the application, target grade and test quantity, and we confirm the sample and technical documents. Read the SDS before handling or laboratory evaluation.

How is DOPO packed and stored?

20 kg bags. Store closed in a cool, dry, ventilated place, protected from moisture and incompatible oxidizers. Confirm the packing selected for the quotation and destination before placing the order.

Which documents are available for DOPO?

Download the TDS for the listed technical grade and the reference SDS for safety and transport information. Each order comes with a batch COA; include any market or end-use requirements in your inquiry.

Request a Quote for DOPO

Tell us the required grade, quantity, destination port and documents. We reply within one business day.

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