Declarations

Under the Chemical Weapons Convention (CWC), all Member States must declare controlled activities involving scheduled chemicals or unscheduled discrete organic chemicals (DOCs) to the Organisation for the Prohibition of Chemical Weapons (OPCW).

As a CWC licensee, you are responsible for submitting accurate and timely declarations for any declarable activity controlled by the National Authority for the CWC (NA(CWC)), as required under the Chemical Weapons (Prohibition) Act.  

Types of Declarations

There are four types of declarations under the CWC framework. Depending on the nature of your activities, you may be required to submit one or more declarations

1. Annual Declaration of Anticipated Activities (ADAA)

2. Annual Declaration of Past Activities (ADPA)

3. Ad-Hoc Declaration on Additionally Planned Activities

4. Advanced Notification of Transfer of Schedule 1 Chemical(s)

Annual Declaration of Anticipated Activities (ADAA)

The ADAA is required if you plan to carry out licensable activities involving scheduled chemicals in the upcoming year.

✓ ADAA required 

View the full list of scheduled chemicals   

ADAA Submission Timeline 

The ADAA exercise begins on 15 June each year.

• Schedule 1 chemicals and related facilities: by 15 August of the same year

• Schedules 2 and 3 chemicals and related facilities: by 15 September of the same year

If your planned activities change after submitting your ADAA, you must submit an Ad-Hoc Declaration on Additionally Planned Activities.

For how to submit your ADAA, please refer to the How to Submit Your Declarations section below.

Annual Declaration of Past Activities (ADPA)

You must submit an ADPA if your facility carried out declarable activities in the previous calendar year involving scheduled chemicals or DOCs. 

✓ ADPA required

View full list of scheduled chemicals.

Facilities producing DOCs must submit an ADPA if either of the following conditions is met: 

ADPA Submission Timeline 

The ADPA exercise starts from 1 December every year and ends on 31 January of the following year.

E.g. Submission timeline of ADPA for year 2026 will start from 1 December 2026 and end on 31 January 2027.

For how to submit your ADPA, please refer to the How to Submit Your Declarations section below.

Ad-Hoc Declaration on Additionally Planned Activities

You must submit an Ad-Hoc Declaration on Additionally Planned Activities (AH) if you plan to carry out a licensable activity involving scheduled chemicals that was not included in your submitted ADAA. 

This declaration ensures that NA(CWC) is informed of new or additional planned activities. 

✓ AH required

View full list of scheduled chemicals.

Ad-Hoc Submission Timeline 

• Schedule 1 chemicals and related facilities: at least 200 days before the activity starts 

• Schedules 2 and 3 chemicals and related facilities: at least 20 days before the activity starts 

For how to submit your Ad-Hoc Declaration, please refer to the How to Submit Your Declarations section below. Licensees may submit the Ad-Hoc Declaration using the same declaration forms as the ADAA.

Advanced Notification on Transfer of Schedule 1 Chemicals

If you intend to import, export, or locally transfer any Schedule 1 chemical, you must submit an advanced notification to NA(CWC) before and after the transfer. 

For how to submit your Advanced Notification, please refer to the How to Submit Your Declarations section below.

How to Submit Your Declarations 

You must use the prescribed declaration forms for each declaration type. 

Step 1: Download the relevant application forms. 

Step 2: Submit the completed forms with supporting documents via email: 

customs_nacwc@customs.gov.sg