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193666

Sigma-Aldrich

Chloropentafluorobenzene

99%

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Linear Formula:
ClC6F5
CAS Number:
Molecular Weight:
202.51
Beilstein:
1819389
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.22

Assay

99%

form

liquid

refractive index

n20/D 1.424 (lit.)

bp

122-123 °C/750 mmHg (lit.)

density

1.568 g/mL at 25 °C (lit.)

SMILES string

Fc1c(F)c(F)c(Cl)c(F)c1F

InChI

1S/C6ClF5/c7-1-2(8)4(10)6(12)5(11)3(1)9

InChI key

KGCDGLXSBHJAHZ-UHFFFAOYSA-N

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General description

Reaction between chloropentafluorobenzene and strong N-bases in polar aprotic solvents and in the presence of water has been investigated. Chloropentafluorobenzene on reaction with ammonia yields 4-chloro-2,3,5,6-tetrafluoroaniline and 2-chloro-3,4,5,6-tetrafluoroaniline.

Application

Chloropentafluorobenzene has been used in the preparation of:
  • 1,2-difluoro-1,2-bis-(pentafluorophenyl)dichlorane via fluorination with elemental fluorine at 128°C
  • 5-chloro-1-(difluorochloro)-2,3,4,5,6,6-hexafluoro-1,3-cyclohexadiene via reaction with chlorine trifluoride at −78°C

Pictograms

Skull and crossbones

Signal Word

Danger

Hazard Statements

Hazard Classifications

Acute Tox. 3 Inhalation

Storage Class Code

6.1C - Combustible, acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects

WGK

WGK 2

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Regulatory Information

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Błazej Gierczyk et al.
The Journal of organic chemistry, 68(8), 3139-3144 (2003-04-12)
Products of reactions between chloropentafluorobenzene and strong N-bases (DBN, DBU, TBD, and MTBD) in polar aprotic solvents and in the presence of water were isolated and identified by analytical and spectroscopic methods. The products of these dehydrohalogenation reactions are apropriate
E R Kinkead et al.
Toxicology and industrial health, 7(4), 309-318 (1991-07-01)
Chloropentafluorobenzene (CPFB) has been identified as a candidate simulant for nonpersistent chemical warfare agents. Acute toxicity studies have shown that CPFB has limited adverse effects on laboratory animals. A 21-day inhalation study of rats and mice to 2.5, 0.8, and
5-Chloro-1-(difluorochloro)-2, 3, 4, 5, 6, 6-hexafluoro-1, 3-cyclohexadiene: Synthesis and characterization.
Obaleye JA and Sams LC.
Journal of Fluorine Chemistry, 23(5), 479-479 (1983)
W D Crank et al.
Toxicology and industrial health, 8(1-2), 21-35 (1992-01-01)
Chloropentafluorobenzene (CPFB) has been proposed as an innocuous simulant for the uptake of toxic gases. Exposure to CPFB in a training exercise could be inferred afterwards from a measurement of CPFB in expired breath. To understand the relationship between exposure
H J Clewell et al.
Risk analysis : an official publication of the Society for Risk Analysis, 14(3), 265-276 (1994-06-01)
Noncancer risk assessment traditionally relies on applied dose measures, such as concentration in inhaled air or in drinking water, to characterize no-effect levels or low-effect levels in animal experiments. Safety factors are then incorporated to address the uncertainties associated with

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