Phenylphosphine
Phenylphosphine (CAS 638-21-1), molecular formula C6H5PH2, is a high-purity chemical supplied by Tech Serve Solutions for catalysis & inorganic applications, to pharmacopoeia specification (USP, BP, EP). Every batch is tested and ships with a Certificate of Analysis; MSDS and technical data sheets are available on request. Tech Serve Solutions has supplied laboratory reagents, fine chemicals and pharmaceutical intermediates worldwide since 1998.

| Molecular weight | 110.09 |
|---|---|
| Linear formula | C6H5PH2 |
| Boiling point | 160 °C(lit.) |
| Density | 0.6912 g/mL at 25 °C1.001 g/mL at 25 °C(lit.) |
| Refractive index | n20/D 1.578(lit.) |
| Vapour pressure | 760 mmHg (160 °C) |
| Vapour density | 3.79 (vs air) |
| Storage temperature | −20°C |




Hazard statements
- H225Highly flammable liquid and vapour
- H250Catches fire spontaneously if exposed to air
- H302Harmful if swallowed
- H304May be fatal if swallowed and enters airways
- H315Causes skin irritation
- H319Causes serious eye irritation
- H336May cause drowsiness or dizziness
- H361F
- H373May cause damage to organs through prolonged exposure
- H411Toxic to aquatic life with long-lasting effects
Precautionary statements
- P210Keep away from heat, sparks and open flames. No smoking
- P222Do not allow contact with air
- P231Handle under inert gas
- P261Avoid breathing dust, fume, gas or vapours
- P273Avoid release to the environment
- P422
| Flash point | -26 °C / -14.8 °F |
|---|---|
| Transport (UN / ADR) | UN 3384 3(6.1) / PGI |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | F,Xn,N |
| Risk statements (R) | 11-20/21/22-38-48/20-51/53-62-65 |
| Safety statements (S) | 16-36/37-61-62 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Supplied to USP, BP and EP standards. Every batch ships with a Certificate of Analysis (assay, identity, purity); MSDS 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 Phenylphosphine?
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Phenylphosphine (CAS 638-21-1), molecular formula C6H5PH2, is a high-purity chemical supplied by Tech Serve Solutions for catalysis & inorganic applications, to USP, BP and EP standards.
What grades of Phenylphosphine does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Phenylphosphine in USP, BP, EP and reagent/AR grades. Custom specifications for nutraceutical or specialty pharmaceutical applications are available — contact our technical sales team.
What is the CAS number and molecular formula of Phenylphosphine?
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Phenylphosphine has CAS number 638-21-1 and molecular formula C6H5PH2. Full specifications appear in the table above and in the Certificate of Analysis.
What is the typical minimum order quantity and lead time for Phenylphosphine?
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Sample quantities are available for technical evaluation; bulk MOQ depends on grade and packaging. In-stock material typically ships in 7–10 working days; custom-spec orders take 3–4 weeks. Tech Serve Solutions ships worldwide with full export documentation.
Do you provide a Certificate of Analysis (CoA) with each shipment?
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Yes. Every batch of Phenylphosphine ships with a Certificate of Analysis covering assay, identity and purity tests, plus pharmacopoeia conformance where applicable. MSDS and TDS documents are available on request before order placement.
How should Phenylphosphine be stored?
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Store Phenylphosphine in its original sealed container in a cool, dry place away from direct sunlight and incompatible materials, in line with the storage guidance on the Safety Data Sheet. Reseal between dispensings.
What is Phenylphosphine used for?
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Phenylphosphine is used in catalysis & inorganic applications across pharmaceutical, research and industrial settings. Our technical team can advise on suitability for your specific process.
How do I request a quote for Phenylphosphine?
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Request a quote with your required grade, quantity and destination via https://www.techservesolutions.in/contact or email info@techservesolutions.in. We respond with specifications, a Certificate of Analysis and pricing.
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