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Singapore Customs

Declarations

Find out when CWC licensees must submit declarations for controlled activities involving scheduled chemicals or unscheduled discrete organic chemicals (DOCs), including ADAA, ADPA, ad-hoc declarations and transfer of Schedule 1 Chemicals.

Last updated 25 February 2026

Types of Declarations

Annual Declaration of Anticipated Activities (ADAA)

ADAA Submission Timeline 

Annual Declaration of Past Activities (ADPA)

ADPA Submission Timeline 

Ad-Hoc Declaration on Additionally Planned Activities

Ad-Hoc Submission Timeline 

Advanced Notification on Transfer of Schedule 1 Chemicals

How to Submit Your Declarations