4,5-Dichlorophthalic anhydride(CAS: 942-06-3)

4,5-Dichlorophthalic anhydride (CAS: 942-06-3) is a crystalline solid at room temperature with a molecular weight of approximately 207.01 g/mol. It has a melting point of 134°C and is only slightly soluble in water. It is highly reactive towards amines, alcohols, and other nucleophiles, making it useful in various chemical reactions.

4,5-Dichlorophthalic anhydride is typically synthesized by the oxidation of 4,5-dichlorophthalic acid using peroxyacids. This process is selective and yields a high purity product. The reaction is usually carried out in an inert solvent under mild conditions to avoid decomposition.

4,5-Dichlorophthalic anhydride (CAS: 942-06-3) is used in various industries including pharmaceuticals for synthesizing certain drugs, polymers for manufacturing plastics and resins, and sensors for detecting specific chemical species. Its use in semiconductors is limited but it is explored for certain applications.

When handling 4,5-Dichlorophthalic anhydride (CAS: 942-06-3), it is crucial to use personal protective equipment (PPE) such as gloves, goggles, and a lab coat. Work must be conducted in a well-ventilated area or in a fume hood. Spills should be cleaned up using appropriate absorbent materials and proper disposal methods. Refer to the Safety Data Sheet (SDS) for detailed handling instructions.