Phosphorus trichloride
Phosphorus trichloride (PCl3), CAS 7719-12-2, is a colourless liquid with a pungent odour. Possessing a molecular weight of 137.33 g/mol, this compound serves as a crucial reagent in chemical synthesis, particularly for chlorination reactions and the formation of phosphorus-containing organic compounds. Its high reactivity makes it indispensable in various industrial processes and laboratory applications.
- IUPAC
- Phosphorus(III) chloride
Synthesis of Organophosphorus Compounds
Phosphorus trichloride is a key intermediate in the production of organophosphorus compounds, including phosphites and phosphonates, which find widespread use as pesticides, flame retardants, and plasticisers.
Chlorinating Agent
It is extensively employed as a chlorinating agent in organic chemistry, facilitating the conversion of carboxylic acids to acyl chlorides and alcohols to alkyl chlorides.
Production of Phosphorus Pentachloride
PCl3 serves as a precursor for the synthesis of phosphorus pentachloride (PCl5), another important chlorinating agent and dehydrating agent in chemical manufacturing.
Reagent for C-X Bond Formation
As a halogenating agent, it is vital in the formation of carbon-halogen bonds, enabling diverse synthetic transformations in research and industrial settings.
| Molecular weight | 137.33 |
|---|---|
| Linear formula | PCl3 |
| Assay | 99.999% trace metals basis |
| Grade | purum |
| Boiling point | 74-78 °C(lit.) |
| Density | 1.574 g/mL at 20 °C(lit.) |
| Refractive index | n20/D 1.5148(lit.) |
| Melting point | −112 °C(lit.) |
| Concentration | 2.0 M in methylene chloride |
| Vapour pressure | 100 mmHg (20 °C)125 mmHg (25 °C)385 mmHg (55 °C) |
| Vapour density | 4.75 (vs air) |
Hazard statements
- H300Fatal if swallowed
- H314Causes severe skin burns and eye damage
- H330Fatal if inhaled
- H373May cause damage to organs through prolonged exposure
Precautionary statements
- P260Do not breathe dust, fume, gas, mist, vapours or spray
- P264Wash thoroughly after handling
- P280Wear protective gloves, clothing and eye/face protection
- P284Wear respiratory protection
- P301IF SWALLOWED
- P305IF IN EYES
| Protective equipment | Faceshields, full-face respirator (US), Gloves, Goggles, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter |
|---|---|
| Transport (UN / ADR) | UN 1809 8(6.1) / PGI |
| Water hazard class (WGK, DE) | 1 |
| Hazard codes (EU) | T+,C |
| Risk statements (R) | 14-26/28-35-48/20 |
| Safety statements (S) | 7/8-26-36/37/39-45 |
| Supplemental hazards | Contact with water liberates toxic gas., 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 Phosphorus trichloride used for?
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Phosphorus trichloride (PCl3) is primarily used in chemical synthesis as a chlorinating agent, for the production of organophosphorus compounds, and as a precursor to other phosphorus halides like PCl5.
What is the CAS number and chemical formula for Phosphorus trichloride?
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The CAS number for Phosphorus trichloride is 7719-12-2, and its chemical formula is PCl3.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Phosphorus trichloride with a purity of 99.999% on a trace metals basis, designated as purum grade.
How should Phosphorus trichloride be handled safely?
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Phosphorus trichloride is highly corrosive and reacts violently with water, releasing toxic gas. Handle with extreme caution in a well-ventilated area, wearing appropriate personal protective equipment including a full-face respirator, gloves, and eye protection. Avoid contact with water and moisture.
Is Phosphorus trichloride a controlled substance?
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The provided data does not indicate that Phosphorus trichloride is a controlled substance.
How is Phosphorus trichloride packed and shipped?
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Phosphorus trichloride is shipped under UN 1809, Hazard Class 8(6.1), Packing Group I. It is classified with European hazard codes T+ (Very Toxic) and C (Corrosive).
How can I request a quote or sample of Phosphorus trichloride?
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Please contact Tech Serve Solutions directly through our website or by phone to request a quote or sample of Phosphorus trichloride.
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