The global drive towards safer and more sustainable materials has significantly increased the demand for effective halogen-free flame retardants. Among these, 9,10-Dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO, CAS 35948-25-5) has emerged as a highly sought-after compound, particularly for its performance in polymers like epoxy resins, polyamides, and polyurethanes. As a leading chemical manufacturer and supplier, we aim to provide comprehensive insights into this crucial additive.

DOPO is characterized by its molecular structure, which includes a phosphorus atom within a rigid, planar heterocyclic ring system. This structure contributes to its high thermal stability and inherent flame-retardant efficacy. Typically appearing as a white crystalline powder, DOPO has a melting point in the range of 115-118°C and a purity level of ≥99.5% when sourced from reputable manufacturers. Its solubility in common organic solvents like benzene and toluene, and limited solubility in water, are important considerations for formulation processing.

The synthesis of DOPO generally involves complex chemical pathways, often starting from precursors like 2-phenylphenol and phosphorus trichloride. While specific manufacturing processes are proprietary, the objective is always to achieve high purity and consistent quality. As a manufacturer based in China, we leverage advanced synthesis techniques and rigorous quality control measures to ensure our DOPO meets global performance expectations. This meticulous approach allows us to offer a product that is both effective and cost-competitive.

The market for DOPO is robust, driven by the electronics industry's need for halogen-free materials in PCBs and electronic casings, as well as the automotive and construction sectors' increasing focus on fire safety. The trend towards higher performance polymers in these industries further fuels the demand for advanced flame retardants. When sourcing DOPO, it is crucial for procurement managers to partner with reliable suppliers who can guarantee product quality, supply chain stability, and competitive pricing.

For companies looking to buy DOPO or understand its role in their formulations, partnering with an experienced manufacturer and supplier is key. We provide detailed technical specifications, safety data sheets, and responsive customer support to facilitate your procurement process. Whether you are developing new flame-retardant systems or seeking to replace older technologies, our high-purity DOPO is an excellent choice. Request a quote today to secure a dependable supply of this vital chemical intermediate.