Thailand’s Department of Industrial Works (DIW) is currently soliciting comments on the proposed updates to the List of Hazardous Substances (hereinafter referred to as the List), aiming to optimize the management of cyanide compounds. Thailand DIW has received information from the police and other relevant agencies that certain cyanide compounds are being used in illegal activities, posing serious risks to lives and human health. Therefore, Thailand DIW has conducted a review and deemed it necessary to enhance the control measures.