Phosphorus trichloride
CAS 7719-12-2Cl3P137.33 g/mol
Phosphorus trichloride is a phosphorus halide with formula Cl3P.
IUPAC: trichlorophosphane
PubChem
Physical & Chemical Properties
| Melting Point | -170 °F (EPA, 1998) |
| Boiling Point | 169 °F at 760 mmHg (EPA, 1998) |
| Density | 1.574 at 69.8 °F (EPA, 1998) - Denser than water; will sink |
| Solubility | Reacts with water (NIOSH, 2024) |
| Vapor Pressure | 100 mmHg at 69.8 °F (EPA, 1998) |
| Appearance | Phosphorus trichloride appears as a colorless or slightly yellow fuming liquid with a pungent and irritating odor resembling that of hydrochloric acid. Causes severe burns to skin, eyes and mucous membranes. Very toxic by inhalation, ingestion and skin absorption. Reacts with water to evolve hydrochloric acid, an irritating and corrosive gas apparent as white fumes. Used during electrodeposition of metal on rubber and for making pesticides, surfactants, gasoline additives, plasticizers, dyestuffs, textile finishing agents, germicides, medicinal products, and other chemicals. |
Data: PubChem · Last updated: 4/20/2026
GHS Classification
No GHS classification data available.
Classification data is sourced from ECHA.
Regulatory Compliance
TSCA
Listed
note: Status based on EPA TSCA Active Inventory · inventory name: TSCA Chemical Substance Inventory
View sourceGlobal Trade Intelligence
No trade flow data available for this chemical.
HS Code(s): 2812
Data: UN Comtrade
Suppliers on Chem-Exchange
No suppliers currently listing Phosphorus trichloride
List Your ProductsSafety Data Sheets
No SDS documents available
Upload an SDS document