Thailand’s DIW Reminds Category 3 Factories to Comply with Updated Chemical Safety Regulations

On January 6, 2025, the Department of Industrial Works (DIW) issued a formal reminder to Category 3 factory operators to comply with the Ministry of Industry’s updated Safety Measures for Chemical Management in Industrial Plants (No. 2), under the B.E. 2566 regulations. This compliance mandate requires factories to report their hazardous chemical use and storage data annually.  

What are Category 3 Factories? 

Category 3 factories are industrial facilities with machinery over 50 horsepower, more than 50 workers, or significant pollution generation regardless of workforce size or machinery horsepower. 

Reporting Requirements and Deadlines 

Factory operators must submit their hazardous chemical reports to the Ministry of Industry's central data reporting system by April 30, 2025. Reporting is required for all hazardous chemicals in quantities of one tonne or more per year per type. Even facilities that use smaller quantities or no hazardous chemicals are required to report.  

Failure to comply with the reporting requirements may lead to penalties for non-compliance under Section 46 of the Factory Act B.E. 2535, carrying fines of up to 20,000 baht or potential administrative orders, including suspension or closure of the factory. 

Guidelines for Reporting to the Ministry of Industry’s Central Data System 

In order to comply with the reporting requirements, operators are required to: 

• Register with the Ministry of Industry’s i-Industry system, providing their 13-digit business number or national ID/juristic person registration number. 

1. Add their business and factory details. 

2. Submit chemical information via the iSingleForm system. 

A user manual and detailed guidance on hazard classification (GHS codes) and storage classification are available via the Ministry's platform. For further assistance, factory operators can access a FAQ section provided by the Department in the user manual. 

Promoting Compliance Throughout Thailand’ Industrial Sector 

The Department of Industrial Works urges all factory operators to complete the process within the stipulated time to avoid legal or administrative action. Compliance will help maintain safety and legal compliance throughout Thailand's industrial sector. Businesses that have already fulfilled their obligations were thanked for their cooperation.