1-Ethyl-3-methyl-1H-imidazol-3-ium methyl sulfate(CAS: 516474-01-4)

1-Ethyl-3-methyl-1H-imidazol-3-ium methyl sulfate is a white crystalline solid. Its molecular weight is approximately 206.28 g/mol. It is sparingly soluble in water and organic solvents. The compound is moderately reactive, particularly towards bases and reducing agents. It is stable under normal conditions but should be stored away from strong acids and oxidizers.

1-Ethyl-3-methyl-1H-imidazol-3-ium methyl sulfate is synthesized by treating 1-ethyl-3-methylimidazole with methyl sulfate. The reaction proceeds via methyl substitution, yielding the desired product. Commonly, this is performed in pyridine or another suitable solvent at room temperature. The yield is typically around 80-85%, and the product can be purified by recrystallization from water or ethanol.

1-Ethyl-3-methyl-1H-imidazol-3-ium methyl sulfate finds applications in the pharmaceutical industry for its use as a proton conductor in solid acid catalysts. It is also used in the polymer industry as a component in ionomers and in the development of sensors and semiconductors for its unique ionic conductive properties.

When handling 1-Ethyl-3-methyl-1H-imidazol-3-ium methyl sulfate, appropriate personal protective equipment (PPE) should be worn, including gloves, goggles, and a lab coat. The compound should be stored in a fume hood and away from strong acids and oxidizers. In case of a spill, it should be carefully cleaned up using absorbent material and the area should be thoroughly washed with water. Safety data sheets (SDS) should be consulted for detailed emergency procedures.