Aure Chemical: Trusted Source of Phenylthiophosphonic Dichloride CAS 3497-00-5
Phenylthiophosphonic dichloride is a sulfur-containing organophosphorus reagent valued for its reactivity in substitution and phosphorylation reactions. It provides a thiophosphonyl functionality that supports development of phosphorus-based compounds in industrial and research settings.
Basic Information
| CAS No. | 3497-00-5 |
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| EC No. | 222-494-8 |
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| Linear Formula | C6H5P(S)Cl2 |
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| Molecular Weight | 211.05 |
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| Appearance | Colorless to pale yellow liquid |
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| Melting Point | 76-77 °C (lit.) |
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| Boiling point | 270 °C (lit.) |
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| Density | 1.40 g/mL at 20 °C (lit.) |
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| RIDADR | UN 3265 Class 8, PG II |
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| Chemical Structure |  |
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Key Applications
Organophosphorus Intermediate: Key reagent for preparing thiophosphonates and related derivatives through nucleophilic displacement of chloride.
Flame Retardant Precursor: Used in synthesis of sulfur-phosphorus containing additives for enhanced flame resistance in polymers and materials.
Specialty Polymer Synthesis: Incorporated into high-refractive-index or functional polymers requiring thiophosphoryl groups.
Chemical Research Building Block: Employed in laboratory-scale preparation of advanced organophosphorus compounds for catalysis and materials science.
Agrochemical and Fine Chemical Use: Applied in development of select phosphorus-based active ingredients and intermediates.
Safety and Storage
Phenylthiophosphonic dichloride is corrosive and moisture-sensitive, reacting with water to produce corrosive gases. Handle exclusively in a fume hood with full PPE, avoiding contact with water, alcohols, or bases. Store sealed under inert atmosphere in a cool, dry, ventilated area compatible with corrosive substances.
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Hazards Classification
GHS Classification: Skin Corrosion Category 1B (GHS05), Serious Eye Damage Category 1 (GHS05), Corrosive to Metals, Acute Toxicity Category 4 (Oral).
Hazard Statements: H314 (Causes severe skin burns and eye damage), H290 (May be corrosive to metals), H302 (Harmful if swallowed).
UN Number: UN 3265
Hazard Class: 8 (Corrosive)
Packing Group: II
Corrosive
