Phosphorus Trichloride (PCl₃)
High-purity industrial intermediate for agrochemicals, pharmaceutical APIs & specialty phosphorus compounds. Manufactured in Gujarat, India.
Product Overview
The Essential Phosphorus Chloride for Chemical Synthesis
Phosphorus Trichloride (PCl₃) is a colorless to pale yellow fuming liquid and one of the most important inorganic phosphorus compounds in industrial chemistry. Its strong electrophilic phosphorus centre makes it a highly effective chlorinating and phosphorylating agent across agrochemical, pharmaceutical, and specialty chemical manufacturing.
Technical Specifications
Physical & Chemical Properties
All parameters are verified by in-house GC and wet-chemistry methods before dispatch.
| Chemical Formula | PCl₃ |
|---|---|
| CAS Number | 7719-12-2 |
| UN / Hazard Class | UN 1809 · Class 8 (PG I) |
| Appearance | Colorless to pale yellow fuming liquid |
| Assay (GC) | ≥ 99.5% |
| Molar Mass | 137.33 g/mol |
| Boiling Point | 76 °C |
| Melting Point | −93.6 °C |
| Density | 1.574 g/cm³ at 20 °C |
| Vapour Pressure | 100 hPa at 20 °C |
| Reactivity | Reacts violently with water → HCl + H₃PO₃ |
Packaging & Supply
Flexible Supply Configurations
We offer UN-approved packaging from drum to bulk tanker to match your throughput and unloading infrastructure.
Hazard Warning: PCl₃ is UN 1809, Class 8 Corrosive, Packing Group I. Reacts violently with water producing HCl gas. Handle only in dry, ventilated areas with full PPE. Consult the SDS before use.
Industrial Applications
Where PCl₃ Powers Global Chemistry
Phosphorus Trichloride is a foundational reagent across five major industrial sectors — from crop protection to battery electrolytes.
Agrochemicals
Primary intermediate for glyphosate via phosphorous acid route. Also key precursor for organophosphate insecticides (chlorpyrifos, malathion) and nematicides used in crop protection globally.
Pharmaceuticals
Converts carboxylic acids to highly reactive acyl chlorides — critical building blocks for beta-lactam antibiotics, cardiovascular APIs, and synthetic vitamins with superior yield profiles.
Flame Retardants
Precursor to triaryl and alkyl diaryl phosphate ester flame retardants used in engineering plastics, PU foams, synthetic textiles, and printed circuit boards.
Dyes & Pigments
Introduces phosphoryl and phosphonate groups onto chromophore molecules for reactive dye and dye-fixing agent synthesis — improving wash-fastness and fibre substantivity.
Specialty & Catalysts
Used to produce phosphorous acid for scale inhibition, organophosphorus ligands for transition-metal catalysis, and phosphonates for water treatment and desalination.
Why Source from Us
Darshan Fine Chem Private Limited Quality Promise
Anhydrous Production
Closed-loop, nitrogen-blanketed filling lines prevent moisture contact from reactor to sealed drum.
≥99.5% Assay
Every batch GC-verified in our in-house QC laboratory with full impurity profiling before release.
COA & SDS
Batch-specific Certificate of Analysis and GHS-compliant Safety Data Sheet with every consignment.
Export Ready
Sayakha GIDC location ensures fast access to Mundra and Nhava Sheva ports for reliable export timelines.
FAQs
Frequently Asked Questions — Phosphorus Trichloride
Looking for a reliable PCl₃ supplier in India?
Share your specification and quantity — our technical team will revert with availability and pricing.