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157791

Sigma-Aldrich

Phosphorus trichloride

ReagentPlus®, 99%

Synonym(s):

Phosphorus(III) chloride

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About This Item

Linear Formula:
PCl3
CAS Number:
7719-12-2
Molecular Weight:
137.33
Beilstein:
969177
EC Number:
231-749-3
MDL number:
MFCD00011438
UNSPSC Code:
12352302
PubChem Substance ID:
24849702
NACRES:
NA.21

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

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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

Legal Information

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

Signal Word

Danger

Hazard Statements

H300 + H330,H314,H373

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

EUH014,EUH029

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

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Certificates of Analysis (COA)

Lot/Batch Number
MKCW0045
MKCV2111
MKCT9195
MKCS3067
STBK0772

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Clugston, M. and Flemming, R
Advanced Chemistry (2000)
Yousef Beni et al.
Tetrahedron letters, 56(17), 2247-2250 (2015-12-15)
Dinucleoside phosphorochloridite were synthesized from phosphorus trichloride and three nucleoside analogues, 3'-fluoro-2',3'-dideoxythymidine (FLT), 2',3'-dideoxy-5-fluoro-3'-thiacytidine (FTC), and 2',3'-dideoxy-3'-thiacytidine (3TC), in a multistep synthesis. Polymer-bound
Synthesis and properties of 4-(dibromomethyl) benzenecarbaldehyde.
Gazizov MB, et al.
Tetrahedron Letters, 57(2), 210-212 (2016)
The microwave spectra and molecular structure of phosphorus and arsenic trichloride.
Kisliuk P and Townes CH.
J. Chem. Phys. , 18(8), 1109-1110 (1950)
661. Formation of organo-phosphorus compounds by the reaction of alkyl chlorides with phosphorus trichloride in the presence of aluminium chloride.
Kinnear AM and Perren EA.
Journal of the Chemical Society, 3437-3445 (1952)
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