1,2-Phenylenebisphosphine
1,2-Phenylenebisphosphine (CAS: 80510-04-9), with the linear formula C6H4(PH2)2 and a molecular weight of 142.08, is a phosphine compound. It is a key reagent in the synthesis of sophisticated organophosphorus compounds and serves as a bidentate ligand in coordination chemistry. Its applications span catalysis and chemical synthesis, particularly where precise control over metal complexation is required.
- Synonyms
- C6H4(PH2)2

Ligand in Organometallic Chemistry
1,2-Phenylenebisphosphine acts as a bidentate phosphine ligand, forming stable chelates with various transition metals. This property is vital for creating homogeneous catalysts used in reactions such as cross-coupling and hydrogenation.
Precursor for Phosphine Derivatives
This compound serves as a building block for synthesising more complex phosphine ligands and organophosphorus reagents. These derivatives can be tailored for specific applications in catalysis or materials science.
Catalysis
Its ability to coordinate with metal centres makes it a valuable component in catalytic systems, influencing reaction selectivity and efficiency in organic transformations.
| Molecular weight | 142.08 |
|---|---|
| Linear formula | C6H4(PH2)2 |
| Assay | 98% |
| Boiling point | 53-55 °C/0.25 mmHg(lit.) |
| Density | 1.101 g/mL at 25 °C(lit.) |

Hazard statements
- H250Catches fire spontaneously if exposed to air
Precautionary statements
- P222Do not allow contact with air
- P231Handle under inert gas
- P422
| Protective equipment | Eyeshields, Faceshields, full-face respirator (US), Gloves, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter |
|---|---|
| Transport (UN / ADR) | UN 2845 4.2 |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | F |
| Risk statements (R) | 17 |
| Safety statements (S) | 16-27-36/37/39 |
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 1,2-Phenylenebisphosphine used for?
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1,2-Phenylenebisphosphine is primarily used as a bidentate phosphine ligand in organometallic chemistry and catalysis, and as a precursor for synthesising other phosphine derivatives.
What is the CAS number and formula for 1,2-Phenylenebisphosphine?
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The CAS number is 80510-04-9 and its linear formula is C6H4(PH2)2.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 1,2-Phenylenebisphosphine with an assay of 98%. We do not represent this product as USP, BP, or EP grade.
How should 1,2-Phenylenebisphosphine be handled?
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1,2-Phenylenebisphosphine is pyrophoric (H250) and requires extremely careful handling under an inert atmosphere. Essential personal protective equipment includes eyeshields, face shields, gloves, and appropriate respiratory protection such as a multi-purpose combination respirator cartridge or a type ABEK respirator filter.
How is 1,2-Phenylenebisphosphine packed and shipped?
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As a pyrophoric substance (UN 2845, Class 4.2), 1,2-Phenylenebisphosphine is carefully packed and shipped according to stringent international regulations for hazardous materials to ensure safe transport.
How can I request a quote or sample for 1,2-Phenylenebisphosphine?
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To request a quote or sample, please use the contact form on our website or contact our sales department directly, providing the product name and CAS number.
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