o-Phenylene phosphorochloridite
o-Phenylene phosphorochloridite (CAS 1641-40-3), molecular formula C6H4ClO2P, 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.
- IUPAC
- 2-Chloro-1,3,2-benzodioxaphosphole,o-Phenylene chlorophosphite,Chloro(1,2-phenylenedioxy)phosphine,Cyclic o-phenylene phosphorochloridite,Phosphorochloridous acid orthophenylene ester,Pyrocatechol phosphoryl chloride

| Molecular weight | 174.52 |
|---|---|
| Empirical formula | C6H4ClO2P |
| Assay | 97% |
| Boiling point | 80 °C/20 mmHg(lit.) |
| Density | 1.466 g/mL at 25 °C(lit.) |
| Refractive index | n20/D 1.571(lit.) |
| Application | • Catalyst in synthesis of bakkane sesquiterpenes1• Reactant in reversible halogen-halogen ligand substitution at room temperature, and in irreversible halogen-O substitution at higher temperatures2• Reactant in preparation of gold(I) trimethoxybenzonitrile phosphine isolated precatalysts3• Reactant for preparation of pyrroles by TMSOTf-catalyzed Arbuzov reaction4• Phosphorylation agent5• Reactant for reparation of vinyl-substituted spirophosphoranes and vinylphosphonates via Markovnikov addition6 |
| Melting point | 30-35 °C(lit.) |

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 | Eyeshields, Faceshields, full-face particle respirator type N100 (US), Gloves, respirator cartridge type N100 (US), type P1 (EN143) respirator filter, type P3 (EN 143) respirator cartridges |
|---|---|
| Flash point | 110 °C / 230 °F |
| Transport (UN / ADR) | UN 3261 8 / PGII |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | C |
| Risk statements (R) | 34 |
| Safety statements (S) | 26-36/37/39-45 |
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 o-Phenylene phosphorochloridite?
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o-Phenylene phosphorochloridite (CAS 1641-40-3), molecular formula C6H4ClO2P, is a high-purity chemical supplied by Tech Serve Solutions for catalysis & inorganic applications, to USP, BP and EP standards.
What grades of o-Phenylene phosphorochloridite does Tech Serve Solutions supply?
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Tech Serve Solutions supplies o-Phenylene phosphorochloridite 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 o-Phenylene phosphorochloridite?
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o-Phenylene phosphorochloridite has CAS number 1641-40-3 and molecular formula C6H4ClO2P. Full specifications appear in the table above and in the Certificate of Analysis.
What is the typical minimum order quantity and lead time for o-Phenylene phosphorochloridite?
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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 o-Phenylene phosphorochloridite 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 o-Phenylene phosphorochloridite be stored?
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Store o-Phenylene phosphorochloridite 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 o-Phenylene phosphorochloridite used for?
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o-Phenylene phosphorochloridite 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 o-Phenylene phosphorochloridite?
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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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