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329762

Sigma-Aldrich

2-Bromo-5-chlorothiophene

98%

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About This Item

Empirical Formula (Hill Notation):
C4H2BrClS
CAS Number:
Molecular Weight:
197.48
EC Number:
MDL number:
UNSPSC Code:
12352100
PubChem Substance ID:
NACRES:
NA.22

Assay

98%

form

liquid

refractive index

n20/D 1.596 (lit.)

bp

69-70 °C/18 mmHg (lit.)

density

1.803 g/mL at 25 °C (lit.)

SMILES string

Clc1ccc(Br)s1

InChI

1S/C4H2BrClS/c5-3-1-2-4(6)7-3/h1-2H

InChI key

ZFAJPWYXLYGUJU-UHFFFAOYSA-N

General description

2-Bromo-5-chlorothiophene is a halogen-substituted thiophene and its photodissociation dynamics was studied by resonance enhanced multiphoton ionization time-of-flight technique. Electrochemical reduction of 2-bromo-5-chlorothiophene at carbon cathode in dimethylformamide containing tetramethylammonium perchlorate was reported.

Application

2-Bromo-5-chlorothiophene was used in the synthesis of monomer of 1,4-bis(5-chlorothiophene)-buta-1,3-diyne and 5-chloro-2-[(trimethylsilyl)-ethynyl]thiophene.

Storage Class Code

10 - Combustible liquids

WGK

WGK 3

Flash Point(F)

185.0 °F - closed cup

Flash Point(C)

85 °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.

FSL

Group 4: Flammable liquids
Type 3 petroleums
Hazardous rank III
Water insoluble liquid

JAN Code

329762-5G:
329762-25G:
329762-VAR:
329762-BULK:


Certificates of Analysis (COA)

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Synthesis and Properties of Conjugated Polycarbosilanes with 1, 4-Bis (thiophene or phenylene)-buta-1, 3-diyne.
Seo IK, et al.
Bull. Korean Chem. Soc., 20(6), 677-682 (1999)
Monali Kawade et al.
The journal of physical chemistry. A, 116(44), 10656-10667 (2012-10-20)
The photodissociation dynamics of halogen-substituted thiophenes, namely, 2-chlorothiophene and 2-bromo-5-chlorothiophene, has been studied in a supersonic molecular beam around 235 nm, using resonance enhanced multiphoton ionization (REMPI) time-of-flight (TOF) technique, by detecting the nascent state of the primary halogen atoms.
Mohammad S. Mubarak et al.
The Journal of organic chemistry, 61(23), 8074-8078 (1996-11-15)
Cyclic voltammetry and controlled-potential electrolysis have been employed to probe the electrochemical reduction of a number of mono- and dihalothiophenes at carbon cathodes in dimethylformamide containing tetramethylammonium perchlorate. Reduction of 2-bromo-, 3-bromo-, 2-chloro-, 3-chloro-, and 2-iodothiophene gives rise to a

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