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8.22322

Phosphorus trichloride

for synthesis

Synonym(s):

Phosphorus trichloride, Phosphorus(III) chloride, Phosphorus chloride

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About This Item

CAS Number:
7719-12-2
Molecular Weight:
137.33
UNSPSC Code:
12352302
EC Index Number:
231-749-3
NACRES:
NA.22
MDL number:
MFCD00011438
Assay:
≥99% (argentometric)
Grade:
synthesis grade
Bp:
76 °C/1013 hPa
Vapor pressure:
131 hPa ( 20 °C)
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grade

synthesis grade

Quality Segment

200

vapor pressure

131 hPa ( 20 °C)

assay

≥99% (argentometric)

form

liquid

potency

18 mg/kg LD50, oral (Rat)

dilution

(for synthesis)

pH

1 (20 °C, 5 g/L in H2O)

bp

76 °C/1013 hPa

mp

-94 °C

density

1.57 g/cm3 at 20 °C

storage temp.

2-30°C

SMILES string

P(Cl)(Cl)Cl

InChI

1S/Cl3P/c1-4(2)3

InChI key

FAIAAWCVCHQXDN-UHFFFAOYSA-N

General description

for synthesis

Application

Phosphorus trichloride (PCl3) can be used as:
  • A chlorinating agent for the alcohols, aldehydes, ketones, and carboxylic acids.
  • A reagent to convert alcohols, diols, and phenols to phosphites.
  • A reducing agent to reduce sulfoxides, amine N-oxides, and hydroxy amides to corresponding sulfides, amines, and amides.

It can also be used as a reagent to synthesize:
  • Phosphaindolizines and thiazolodiazaphospholes by reacting with quaternary ammonium salts.
  • Phosphorus-containing ligand molecules via the introduction of the phosphorus atom.
  • Benzidronate by treating with phenylacetic acid and phosphorous acid in methanesulfonic acid, followed by hydrolysis.

Analysis Note

Assay (argentometric)≥ 99.0 %Density (d 20 °C/ 4 °C)1.572 - 1.574

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Danger

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

flash_point_f

Not applicable

flash_point_c

Not applicable

Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

Poisonous substance

pdsc

Substances Subject to be Indicated Names

ishl_indicated

Substances Subject to be Notified Names

ishl_notified

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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