2-Nitrothiophene, with the CAS number 609-40-5, is an organic compound belonging to the class of nitroaromatics, specifically nitrothiophenes. It is a colorless to pale yellow liquid at room temperature, although its exact appearance can vary depending on purity and storage conditions. This chemical compound finds applications in various research and industrial settings due to its unique chemical properties.
Chemical Structure and Formula:
2-Nitrothiophene has the molecular formula C4H3NOS, with a molar mass of 125.14 g/mol. Its structure consists of a thiophene ring (a five-membered heterocyclic ring containing a sulfur atom) with a nitro (-NO2) group attached to the second carbon atom from the sulfur. This arrangement gives the molecule its characteristic reactivity and properties.
Physical Properties of 2-Nitrothiophene CAS 609-40-5:
Appearance: Colorless to pale yellow liquid
Odor: Characteristic, pungent
Density: Slightly greater than water (approximate)
Boiling Point: Moderately high, around 220°C (depending on pressure and purity)
Melting Point: Below room temperature, making it a liquid at standard conditions
Solubility: Soluble in organic solvents such as ethanol, ether, and benzene
Chemical Properties and Reactivity of 2-Nitrothiophene CAS 609-40-5:
2-Nitrothiophene is known for its electrophilic nature, particularly due to the presence of the nitro group. This group can undergo various reactions, including reduction to form amines, displacement reactions with nucleophiles, and substitution reactions under certain conditions. The thiophene ring itself also contributes to the reactivity profile, allowing for substitution reactions at the sulfur atom or addition reactions across the ring.
Applications:
Research: 2-Nitrothiophene is used as a starting material or intermediate in the synthesis of more complex organic compounds, particularly those with sulfur-containing heterocycles. It is valuable in the development of new pharmaceuticals, agrochemicals, and materials science applications.
Industrial: Although not as widely used as some other nitroaromatic compounds, 2-nitrothiophene may find niche applications in the production of specific dyes, pigments, or other specialty chemicals.