Overview

• The chemical leak occurred at 3 am on May 18, 2025, during the transfer of dimethyl sulphate between two plants at Camlin Fine Sciences' Boisar facility.
• Approximately 10–15 kg of dimethyl sulphate spilled due to a delay in closing the isolation valve, releasing toxic fumes.
• Thirteen workers experienced eye irritation and respiratory discomfort and were hospitalized as a precaution; all are in stable condition and expected to be discharged soon.
• The Directorate of Industrial Safety and Health, led by Assistant Director S G Sabban, has launched a preliminary investigation into safety protocol compliance and valve handling procedures.
• The incident underscores ongoing concerns about hazardous chemical management and regulatory enforcement in Maharashtra's industrial hubs.