Phosphorus Trichloride (PCl₃), CAS 7719-12-2, is also known as trichlorophosphine. It is a reactive phosphorus(III) chloride used in inorganic and organophosphorus synthesis. For procurement review, confirm the reaction route, water exclusion, materials compatibility, and offered form, packaging, and applicable safety documentation.
Phosphorus Trichloride (PCl₃) CAS 7719-12-2
- CAS: 7719-12-2
- Synonyms: Phosphorus trichloride; PCl₃; Phosphorus(III) chloride; Trichlorophosphine
- Einecs: 231-749-3
- Molecular Formula: PCl₃
- Grade: Confirm current product specification
- Package: Confirm packaging for the offered form
Product Description
Product name: Phosphorus Trichloride (PCl₃)
CAS number: 7719-12-2
Molecular formula: PCl₃
Molecular weight: 137.33 g/mol
EC number: 231-749-3
Other names: Phosphorus trichloride; PCl₃; Phosphorus(III) chloride; Trichlorophosphine
Chemical class: a reactive phosphorus(III) chloride
Identity check: PCl₃ identifies phosphorus trichloride and is not phosphorus oxychloride (POCl₃).
Technical context: inorganic and organophosphorus synthesis
RFQ information: Before an RFQ, confirm the reaction route, water exclusion, materials compatibility, and offered form.
Offered form: Not specified; confirm the actual offered form.
Specification review: Confirm identity, relevant assay or impurity criteria, and suitability in the current technical dossier.
Safety: Follow the current SDS for the exact offered form and the receiving site’s controls.
Packaging and documents: Confirm packaging and applicable documentation for the actual offered product.
FAQ - Technical & Supply Chain
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Q:
Are Phosphorus Trichloride, Phosphorus(III) Chloride and PCl₃ the same material?
A: Yes. These names identify CAS 7719-12-2 and formula PCl₃. Do not confuse Phosphorus Trichloride with Phosphoryl Chloride, POCl₃, or Phosphorus Pentachloride, PCl₅. The purchase specification, label and analytical release should use the full identity because those chlorides are distinct materials and may also appear as process impurities. -
Q:
Which specifications should be agreed for Phosphorus Trichloride?
A: Set assay and method, color, iron, Phosphoryl Chloride and other agreed phosphorus chloride impurities, plus water-reactivity or acidity-related controls appropriate to the process. Confirm whether the result is by titration, GC or another method. Compare the offered batch COA with the same specification and sampling basis. -
Q:
What must be agreed for bulk PCl₃ transport and unloading?
A: PCl₃ reacts strongly with water and releases corrosive fumes. Agree a dry compatible tank, valve, gasket and closed-transfer system, inert-gas conditions, seal controls and allowable moisture exposure. Before dispatch, the receiving site should approve the current SDS, transport classification, unloading connection, scrubber or vapor-control arrangement and emergency response procedure.
Ordering & Documentation
Key information for document requests, quotations, and supply planning.
Documents
COA, TDS, SDS/MSDS and packing details are available on request.
Quotation
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Sample & Supply
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Storage & Shipping
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