OPCW.org is changing. We are launching our new website soon! Preview the new OPCW.org

About OPCW

OPCW Headquarters Building.

The Organisation for the Prohibition of Chemical Weapons is the implementing body of the Chemical Weapons Convention (CWC), which entered into force in 1997. As of today OPCW has 193 Member States, who are working together to achieve a world free of chemical weapons.

Our Goal

The OPCW Member States share the collective goal of preventing chemistry from ever again being used for warfare, thereby strengthening international security. To this end, the Convention contains four key provisions:

  • destroying all existing chemical weapons under international verification by the OPCW;
  • monitoring chemical industry to prevent new weapons from re-emerging;
  • providing assistance and protection to States Parties against chemical threats; and
  • fostering international cooperation to strengthen implementation of the Convention and promote the peaceful use of chemistry.

Select a link to learn more:

The mission of the OPCW is to implement the provisions of the Chemical Weapons Convention (CWC).
OPCW Internal Vision
Our commitment and values as an organisation.
Member States
An overview of OPCW Member States and their representatives.
Conference of the States Parties
An overview of the Conference of the States Parties and its purpose.
Executive Council
An overview of the Executive Council and its purpose.
Technical Secretariat
An overview of the Technical Secretariat and its purpose.
Subsidiary Bodies
An overview of the Subsidiary Bodies of OPCW and their purposes.
OPCW Agreements
An overview of the OPCW agreements.
Information for Vendors
OPCW Procurement: Calls for Tender, Supplier Registration, Banking Details and Contact information


The OPCW is an independent, autonomous international organisation with a working relationship with the United Nations.

Established: 1997
Headquarters: The Hague, Netherlands Read agreement
Membership: 193 States
Secretariat staff: 500
Director-General: Ahmet Üzümcü
Official languages: Arabic, Chinese, English, French, Russian, Spanish