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Merck
CN

272914

Trichloromethyl chloroformate

Synonym(s):

Diphosgene, di-Phosgene

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About This Item

Linear Formula:
ClCOOCCl3
CAS Number:
Molecular Weight:
197.83
EC Number:
207-965-9
UNSPSC Code:
12352200
PubChem Substance ID:
Beilstein/REAXYS Number:
970225
MDL number:
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InChI key

HCUYBXPSSCRKRF-UHFFFAOYSA-N

InChI

1S/C2Cl4O2/c3-1(7)8-2(4,5)6

SMILES string

ClC(=O)OC(Cl)(Cl)Cl

bp

20 °C/10 mmHg (lit.)

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Application

Reactant for preparation of:
  • Cyclic carbamimidates using a monophosphine gold(i) catalyst
  • N-Alkenyl and cycloalkyl carbamates as dual acting histamine H3 and H4 receptor ligands
  • Prostate-specific membrane antigen-targeted anticancer prodrugs
  • Potential west nile virus protease inhibitors
  • Antibody-drug conjugates (ADCs)
  • Erythromycin A derivatives

pictograms

Skull and crossbonesCorrosion

signalword

Danger

Hazard Classifications

Acute Tox. 2 Inhalation - Acute Tox. 4 Oral - Skin Corr. 1B

Storage Class

6.1A - Combustible acute toxic Cat. 1 and 2 / very toxic hazardous materials

wgk

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Faceshields, Gloves, Goggles, type ABEK (EN14387) respirator filter

Regulatory Information

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Certificates of Analysis (COA)

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Potential agents of chemical warfare. Worst-case scenario protection and decontamination methods.
Angeline A Lazarus et al.
Postgraduate medicine, 112(5), 133-140 (2002-12-05)
Abraham Joy et al.
Talanta, 80(1), 231-235 (2009-09-29)
Methods for the detection and estimation of diphosgene and triphosgene are described. These compounds are widely used phosgene precursors which produce an intensely colored purple pentamethine oxonol dye when reacted with 1,3-dimethylbarbituric acid (DBA) and pyridine (or a pyridine derivative).
Jürgen Pauluhn
Inhalation toxicology, 23(2), 65-73 (2011-02-12)
Groups of young adult Wistar rats were acutely exposed to trichloromethyl chloroformate (diphosgene) and bis(trichloromethyl) carbonate (triphosgene) vapor atmospheres using a directed-flow nose-only mode of exposure. The exposure duration used was 240 min. The median lethal concentration (LC50) of diphosgene

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