4-Chloro-1H-pyrazole(CAS: 15878-00-9)

4-Chloro-1H-pyrazole (CAS: 15878-00-9) is a crystalline solid with a molecular weight of approximately 112.57 g/mol. It is slightly soluble in water and has good solubility in organic solvents like ethanol and acetone. It is chemically stable but can react with strong bases and oxidizing agents. This compound is used in various applications due to its chemical versatility.

4-Chloro-1H-pyrazole can be synthesized through a reaction between hydrazine and chloroform, followed by a condensation step. Common catalysts include acetic anhydride. The yield is generally around 70-80%, and the reaction is carried out under mild conditions to ensure high selectivity.

4-Chloro-1H-pyrazole (CAS: 15878-00-9) is used in the pharmaceutical industry for the synthesis of drugs, in polymer chemistry for the development of new materials, and in the production of sensors and semiconductors due to its unique chemical properties.

When handling 4-Chloro-1H-pyrazole (CAS: 15878-00-9), it is essential to wear appropriate personal protective equipment (PPE), including gloves, goggles, and a lab coat. Work should be conducted in a fume hood to avoid inhalation. In case of a spill, neutralize the area with a suitable neutralizing agent and clean it up carefully. Always consult the Safety Data Sheet (SDS) for detailed safety information.