Bis(2-methoxyphenyl)phenylphosphine
Bis(2-methoxyphenyl)phenylphosphine (CAS 36802-41-2) is a tertiary arylphosphine with the formula (CH3OC6H4)2PC6H5 (C20H19O2P) and a molar mass of 322.34 g/mol. Supplied as a crystalline solid melting at 158-163 °C, it bears two ortho-methoxy-substituted aryl groups and a phenyl group on phosphorus. It functions principally as an electron-rich phosphine ligand for transition-metal complexes used in homogeneous catalysis and chemical synthesis.
- Synonyms
- Bis(2-methoxyphenyl)phenylphosphine(2-MeOC6H4)2PPhPhenylbis(2-methoxyphenyl)phosphineBis(o-methoxyphenyl)phenylphosphine(CH3OC6H4)2PC6H5

Ligand for homogeneous catalysis
Acts as a tertiary phosphine ligand that coordinates to transition metals such as palladium, platinum, nickel, rhodium and ruthenium. The resulting metal-phosphine complexes are employed in homogeneous catalytic systems.
Organic and organometallic synthesis
Used as a building block in chemical synthesis and in the preparation of organophosphorus and organometallic compounds. Its ortho-methoxy aryl groups can influence the steric and electronic environment at the metal centre.
Research and method development
Supplied at 95% assay for laboratory research, catalyst screening and ligand-evaluation studies. Suited to investigating structure-activity relationships in phosphine-ligated catalysts.
Coordination chemistry
Serves as a neutral, two-electron donor ligand for assembling defined metal complexes, supporting studies in coordination and inorganic chemistry.
| Molecular weight | 322.34 |
|---|---|
| Linear formula | (CH3OC6H4)2PC6H5 |
| Assay | 95% |
| Melting point | 158-163 °C(lit.) |
| Protective equipment | Eyeshields, Gloves, type N95 (US), type P1 (EN143) respirator filter |
|---|---|
| Water hazard class (WGK, DE) | 3 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is Bis(2-methoxyphenyl)phenylphosphine used for?
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It is used mainly as an electron-rich tertiary arylphosphine ligand for transition-metal complexes in homogeneous catalysis, and as a building block in organic and organometallic synthesis. It is supplied for laboratory and research applications.
What is the CAS number and molecular formula of Bis(2-methoxyphenyl)phenylphosphine?
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Its CAS number is 36802-41-2 and its linear formula is (CH3OC6H4)2PC6H5, corresponding to the molecular formula C20H19O2P with a molecular weight of 322.34 g/mol. The MDL number is MFCD00061478.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies this product at a typical assay of 95% as a research/technical-grade reagent. We do not represent it as a USP, BP or EP pharmacopoeial grade. A current specification or Certificate of Analysis is available on request.
How should Bis(2-methoxyphenyl)phenylphosphine be handled and stored?
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Handle with suitable personal protective equipment: eye shields, gloves and an N95 (US) or P1 (EN143) respirator filter to avoid inhalation of dust. As with many tertiary phosphines it should be kept away from oxidants; consult the Safety Data Sheet before use. It is classified as Water Hazard Class WGK 3 (highly hazardous to water), so prevent release into drains and watercourses.
How is Bis(2-methoxyphenyl)phenylphosphine packed, shipped and exported?
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It is packed as a solid in appropriately sealed containers sized to the order, from gram research quantities to larger volumes, with full labelling and documentation. Tech Serve Solutions exports worldwide and arranges compliant packaging, the relevant SDS and shipping paperwork.
How do I request a sample or quote?
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Contact Tech Serve Solutions with your required quantity, purity and destination, and our team will respond with availability, lead time and a quotation. Samples can be arranged subject to availability.
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