List of Concerned Chemical Substances

Concerned chemical substances are a new concept introduced in 2019 through the amendment of the Toxic and Concerned Chemical Substances Control Act (TCCSCA) in Taiwan, aimed at enhancing source control over chemical substances. Concerned chemical substances are those aside from Class 1 to 4 toxic chemical substances, that to pollute the environment or are a suspected threat to human health based on substance characteristics or public consumer issues of domestic or foreign concern.
Currently, 19 concerned chemical substances have been designated through updates to the relevant appendices of the Categories and Management of Handling for Concerned Chemical Substances. These substances are categorized into three types according to management needs, including:
Appendix 1 - chemical substances of livelihood concerns;
Appendix 2 - chemical substances of food safety concerns; and
Appendix 3 - chemical substances of explosive precursors.
The appendices provide details on chemical identification, control concentrations, if it is hazardous, specified handling, graded operational quantities, regular reporting frequency, exception, container and packaging rules, and record-keeping requirements.

For listed concerned chemicals that exceed the control concentration (w/w), the following main obligations must be met:
1. Approval: Handling activities involving concerned chemicals must apply for approval and operate according to the stipulations in the approval documents.
2. Record Keeping and Reporting: Handlers must maintain records and submit them periodically. For hazardous concerned chemicals, owners must declare transport manifest prior to transporting these substances.
3. Prevention and Labeling: Compliance with labeling and safety data sheet requirements is mandatory, along with provisions for emergency equipment, detection alarms, and technical personnel.
4. Online transactions are not allowed.

Concerned Chemical Substances are not applicable for Taiwan's  Regulation of New and Existing Chemical Substances Registration.