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477222

Sigma-Aldrich

4-Chloroaniline

purified by sublimation, ≥99%

Synonym(s):

1-Amino-4-chlorobenzene, 4-Chlorophenylamine, p-Chloroaniline

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About This Item

Linear Formula:
ClC6H4NH2
CAS Number:
106-47-8
Molecular Weight:
127.57
Beilstein:
471359
EC Number:
203-401-0
MDL number:
MFCD00007835
UNSPSC Code:
12352100
PubChem Substance ID:
24871344
NACRES:
NA.22

vapor density

4.4 (vs air)

Quality Level

100

vapor pressure

0.15 mmHg ( 25 °C)

Assay

≥99%

form

crystals
powder
solid

purified by

sublimation

bp

232 °C (lit.)

mp

67-70 °C (lit.)

SMILES string

Nc1ccc(Cl)cc1

InChI

1S/C6H6ClN/c7-5-1-3-6(8)4-2-5/h1-4H,8H2

InChI key

QSNSCYSYFYORTR-UHFFFAOYSA-N

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General description

4-Chloroaniline (4-ClA) is a chlorinated aromatic amine that is formed as an intermediate during the microbial decomposition of phenylurea and phenylcarbamate. The formation of various oligomers by polymerization of 4-ClA with guaiacol in an aqueous solution containing oxidoreductases has been reported. 4-ClA undergoes decomposition via oxidation by fusarium oxysporum, a soil fungus.

Application

4-Chloroaniline may be used to synthesize:
  • 4-chloronitrosobenzene
  • 2-bromo-4-chloroaniline
  • 2,6-dibromo-4-chloroaniline

Signal Word

Danger

Hazard Classifications

Acute Tox. 3 Dermal - Acute Tox. 3 Inhalation - Acute Tox. 3 Oral - Aquatic Acute 1 - Aquatic Chronic 1 - Carc. 1B - Skin Sens. 1

Storage Class Code

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

WGK

WGK 3

Flash Point(F)

248.0 °F - closed cup

Flash Point(C)

120.0 °C - closed cup

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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.

EU REACH Annex XVII (Restriction List)

CAS No.

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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Oxidative co-oligomerization of guaiacol and 4-chloroaniline.
Simmons KE, et al.
Environmental Science & Technology, 23(1), 115-121 (1989)
The action of chloride peroxidase on 4-chloroaniline. N-oxidation and ring halogenation.
Corbett MD, et al.
The Biochemical Journal, 187(3), 893-903 (1980)
Microbial oxidation of 4-chloroaniline.
D D Kaufman et al.
Journal of agricultural and food chemistry, 21(1), 127-132 (1973-01-01)
M D Corbett et al.
The Biochemical journal, 175(2), 353-360 (1978-11-01)
The incubation of 4-chloroaniline with chloroperoxidase and H2O2 resulted in a rapid formation of 4-chloronitrosobenzene. This enzymic oxidation displayed a pH optimum at 4.4 with a Km of 8.1x10(-4)M and catalytic-centre activity of 312. The initial rate of the reaction
D Mortenson et al.
International endodontic journal, 45(9), 878-882 (2012-04-11)
To determine if the formation of para-chloroaniline (PCA) can be avoided by using an alternative irrigant following sodium hypochlorite but before chlorhexidine. Fifty-five single-rooted teeth were decoronated, instrumented to size 40, .06 taper whilst being irrigated with 14% ethylene-diamine-tetra-acetic acid
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