157791

Phosphorus trichloride

ReagentPlus^®, 99%

• Synonym(s): Phosphorus(III) chloride
• Linear Formula: PCl₃
• CAS Number: 7719-12-2
• Molecular Weight: 137.33
• Beilstein/REAXYS Number: 969177
• EC Number: 231-749-3
• MDL number: MFCD00011438
• UNSPSC Code: 12352302
• PubChem Substance ID: 24849702
• NACRES: NA.21

Properties

• vapor density: 4.75 (vs air)
• Quality Level: 200
• vapor pressure: 100 mmHg ( 20 °C); 125 mmHg ( 25 °C); 385 mmHg ( 55 °C)
• product line: ReagentPlus^®
• assay: 99%
• form: liquid
• refractive index: n20/D 1.5148 (lit.)
• bp: 74-78 °C (lit.)
• mp: −112 °C (lit.)
• density: 1.574 g/mL at 20 °C (lit.)
• SMILES string: ClP(Cl)Cl
• InChI: 1S/Cl3P/c1-4(2)3
• InChI key: FAIAAWCVCHQXDN-UHFFFAOYSA-N

Description

General description

Phosphorus trichloride is a slightly yellow or colorless fuming liquid, which finds applications in electrodeposition of metal on rubber and in the preparation of pesticides. It can undergo reaction with chlorine gas to form phosphorus pentachloride.

Rotational spectra of phosphorus trichloride has been studied in the microwave region. Its reaction with unsaturated compounds in the presence of diacetyl peroxide has been reported.

Application

Phosphorus trichloride may be used in the preparation of following:

• alkylphosphonyl dichlorides
• benzidronate
• 4-(dibromomethyl)-substituted benzenes bearing a phosphorus functional group in the side chain
• dinucleoside phosphorochloridite

Legal Information

ReagentPlus is a registered trademark of Merck KGaA, Darmstadt, Germany

Safety Information

• pictograms: GHS06,GHS08,GHS05
• signalword: Danger
• hcodes: H300 + H330,H314,H373
• pcodes: P260 - P280 - P303 + P361 + P353 - P304 + P340 + P310 - P305 + P351 + P338 - P314
• Hazard Classifications: Acute Tox. 2 Inhalation - Acute Tox. 2 Oral - Eye Dam. 1 - Skin Corr. 1A - STOT RE 2 Inhalation
• target_organs: Respiratory Tract
• supp_hazards: EUH014,EUH029
• Storage Class: 6.1B - Non-combustible acute toxic Cat. 1 and 2 / very toxic hazardous materials
• wgk_germany: WGK 1
• flash_point_f: Not applicable
• flash_point_c: Not applicable
• ppe: Faceshields, Gloves, Goggles, type ABEK (EN14387) respirator filter