Thailand has adopted the GHS since 13 Mar 2012. The Department of Industrial Works (DIW) finalized the drafting of Ministry of Industry’s Notification on Hazard Classification and Communication for Hazardous Substances. The final notification (Notification BE 2555) was published in the official legislative gazette of Thailand in Mar 2012 and effective from 13 Mar 2012. The notification is based on the third revised edition of the GHS. The transitional period is one year for substances and five years for mixtures, respectively. Therefore, substances will be covered by the GHS legislation imminently, specifically from 13 Mar 2013.