Chlorodiphenylphosphine
Chlorodiphenylphosphine (CAS: 1079-66-9) is an organophosphorus compound with the formula (C 6 5)2PCl and a molecular weight of 220.63 g/mol. This chemical serves as a key precursor in the synthesis of various phosphine derivatives. It is also utilised within catalysis and inorganic chemistry, and finds application as a phosphorus precursor in chemical synthesis. Tech Serve Solutions supplies this compound with an assay of 96%.
- IUPAC
- P-Chlorodiphenylphosphine,ClPPh2,Diphenylphosphinous chloride,PPh2Cl
- Synonyms
- Diphenylphosphinous chlorideP-ChlorodiphenylphosphinePPh2ClClPPh2

Phosphine Synthesis Precursor
Chlorodiphenylphosphine is a vital intermediate for the preparation of more complex phosphine compounds. Its reactive P-Cl bond allows for facile substitution reactions, leading to a diverse range of organophosphorus molecules.
Catalysis and Inorganic Chemistry
This compound finds utility in the field of catalysis, where it can be used in the synthesis of phosphine ligands crucial for various catalytic processes. It also serves as a building block in inorganic phosphorus chemistry.
Chemical Synthesis Reagent
As a versatile phosphorus precursor, Chlorodiphenylphosphine is employed in diverse organic synthesis pathways. It enables the introduction of the diphenylphosphino group into various molecular frameworks.
| Molecular weight | 220.63 |
|---|---|
| Linear formula | (C6H5)2PCl |
| Assay | 96% |
| Boiling point | 320 °C(lit.) |
| Density | 1.194 g/mL at 25 °C1.229 g/mL at 25 °C(lit.) |
| Refractive index | n20/D 1.636(lit.) |
| Vapour density | 7.8 (vs air) |
| Application | Precursors used in the synthesis of various phosphines. |

Hazard statements
- H314Causes severe skin burns and eye damage
Precautionary statements
- P280Wear protective gloves, clothing and eye/face protection
- P305IF IN EYES
- P310Immediately call a POISON CENTER or doctor
| Protective equipment | Faceshields, full-face respirator (US), Gloves, Goggles, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter |
|---|---|
| Flash point | 112 °C / 233.6 °F |
| Transport (UN / ADR) | UN 3265 8 / PGII |
| Water hazard class (WGK, DE) | 2 |
| Hazard codes (EU) | C |
| Risk statements (R) | 14-34 |
| Safety statements (S) | 26-36/37/39-45 |
| Supplemental hazards | Reacts violently with water. |
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 Chlorodiphenylphosphine used for?
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Chlorodiphenylphosphine (CAS: 1079-66-9) is primarily used as a precursor in the synthesis of various phosphine compounds, and finds applications in catalysis, inorganic chemistry, and general chemical synthesis as a phosphorus precursor.
What are the CAS number and formula for Chlorodiphenylphosphine?
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The CAS number for Chlorodiphenylphosphine is 1079-66-9, and its linear formula is (C 6 5)2PCl.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Chlorodiphenylphosphine with a minimum assay of 96%. We do not represent this product as USP, BP, EP, or other pharmacopoeial grades.
How should Chlorodiphenylphosphine be handled safely?
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Chlorodiphenylphosphine is dangerous and reacts violently with water, causing severe skin burns and eye damage (H314). Handle with extreme caution, using appropriate personal protective equipment including faceshields, goggles, gloves, and a suitable respirator. Ensure adequate ventilation and avoid contact with water.
How is Chlorodiphenylphosphine packed and shipped?
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Chlorodiphenylphosphine is packed and shipped in compliance with regulations for hazardous materials, identified under UN 3265 as a Class 8 Corrosive liquid, Packing Group II.
How can I request a quote or sample for Chlorodiphenylphosphine?
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To request a quote or sample for Chlorodiphenylphosphine, please contact the Tech Serve Solutions sales team via our website or direct inquiry channels.
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