3-BROMOTHIOPHENE

PRODUCT IDENTIFICATION

CAS NO. 872-31-1

3-BROMOTHIOPHENE

EINECS NO. 212-821-3
FORMULA C4H3BrS
MOL WT. 163.03

H.S. CODE

2934.99

TOXICITY

 

SYNONYMS 3-Thienyl bromide; beta-Bromothiophene;
SMILES

 

CLASSIFICATION

 

PHYSICAL AND CHEMICAL PROPERTIES

PHYSICAL STATE clear to pale yellow liquid
MELTING POINT < -10 C
BOILING POINT 157 - 158 C
SPECIFIC GRAVITY 1.72 - 1.74
SOLUBILITY IN WATER immiscible
pH  
VAPOR DENSITY  

AUTOIGNITION

 

NFPA RATINGS

 

REFRACTIVE INDEX

1.5863
FLASH POINT 56 C
STABILITY

Stable under ordinary conditions

GENERAL DESCRIPTION AND APPLICATIONS

Thiophene, also known as thiofuran, is a cyclic compound containing four carbon atoms and one sulfur atom in the ring. Thiophene is an analog to furan and pyrrole where the sulfur atom is replaced by O and NH respectively. Thiophene is a toxic, flammable, and colorless liquid; insoluble in water (soluble in most organic solvents including alcohol and ether); melting at -38 C, boiling at 84 C. Thiophene is the simplest aromatic compound containing sulfur atom and it shares some similar chemical properties with benzene. The lone electron pairs on sulfur in the delocalized pi electron system does not exhibits the properties of thioethers but aromaticity. The sulfur atom is unreactive but the adjacent carbons are susceptible to attack by electrophiles. It is reactive toward sulfonation. In commercial thiophene can be prepared by the reaction of butane and sulfur. Thiophenes are also prepared by the reaction of diketones with Lawesson's reagent. Thiophene and its derivatives exist in petroleum or coal. Thiophene derivatives are also found in natural plant pigments. Biotin, a water-soluble B-complex vitamin, is a reduced thiophene derivative. Thiophene moiety is found in ccphalothin antiboitics. Thiophene is used as a solvent and chemical intermediate. Its derivatives are used in manufacturing dyes, aroma compounds and pharmaceuticals. They are used as monomers to make condensation copolymers. Organic conductive polymers are responsible for the important materials science for the application of polymer electro luminescence.
SALES SPECIFICATION

APPEARANCE

clear to pale yellow liquid

ASSAY

99.0% min

SPECIFIC GRAVITY 1.72 - 1.74
TRANSPORTATION
PACKING  
HAZARD CLASS 6.1 (Packing Group: II)
UN NO. 2929
OTHER INFORMATION
Hazard Symbols: T, Risk Phrases: 24/25, Safety Phrases: 28B-36/37/39-45

PRICE INFORMATION

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