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157791

Sigma-Aldrich

Phosphorus trichloride

ReagentPlus®, 99%

Synonym(s):
Phosphorus(III) chloride
Linear Formula:
PCl3
CAS Number:
Molecular Weight:
137.33
Beilstein:
969177
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.21

vapor density

4.75 (vs air)

Quality Level

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

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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

Packaging

50, 250 g in Sure/Seal™
1 kg in Sure/Seal™

Legal Information

ReagentPlus is a registered trademark of Sigma-Aldrich Co. LLC

Signal Word

Danger

Hazard Statements

Hazard Classifications

Acute Tox. 2 Inhalation - Acute Tox. 2 Oral - Eye Dam. 1 - Skin Corr. 1A - STOT RE 2 Inhalation

Target Organs

Respiratory Tract

Supplementary Hazards

Storage Class Code

6.1B - Non-combustible, acute toxic Cat. 1 and 2 / very toxic hazardous materials

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificate of Analysis

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Certificate of Origin

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