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Declarations Branch (DEB)

The Declarations Branch (DEB) handles the Chemical Weapons Convention (CWC) declarations and other verification-related information submitted by States Parties. DEB analyses, processes and archives declared information to ensure that declared data are accurate, consistent and complete according to the CWC requirements, and reports the results of this analysis to the States Parties.

In addition, DEB develops OPCW tools to assist States Parties in identification of declarable chemicals, activities and facilities and supports them in preparation of required declarations. DEB revises and updates these tools on a regular basis to reflect new scheduled chemicals, new identifiers and the relevant decisions periodically agreed upon by the Technical Secretariat (TS) and OPCW Policy-making organs. 

Currently, the 2017 versions of three OPCW tools (Handbook in Chemicals, Brochure on Most Traded Scheduled Chemicals and Online Scheduled Chemicals Database) are accommodated at the OPCW website: www.opcw.org/our-work/non-proliferation/declarations-adviser/. These tools contain all scheduled chemicals declared by States Parties and registered by CAS up to 2014. 

In 2018 DEB plans a project with the CAS Division to update the OPCW tools, with the aim to ensure that the OPCW databases of scheduled chemicals contain up to date information on scheduled chemicals, to enable users in the State Parties to identify and declare them accordingly. DEB intends to recruit an intern for this substantial project with the following assignments and requirements:

Internship assignments:

  • Evaluate new scheduled chemicals declared by States Parties and all new scheduled chemicals registered by CAS during 2014-2017 with the focus to find common chemicals; 
  • Identify undeclared scheduled chemicals registered by CAS during 2014-2017;
  • Create all available identifiers (e.g. chemical name by CWC, IUPAC name, Structure, Molecular formula, OPCW key, HS code, etc.) for new chemicals to be added to the existing OPCW tools.


Applicants must have a completed academic background in a Bachelor’s degree in Chemistry or a closely related field (a Master’s degree in in progress is preferred).

Skills and knowledge

  • Good knowledge in organic chemistry;
  • Good Inter-personal skills; 
  • Ability to work harmoniously in a multicultural environment.

Language proficiency

  • Fluency in English is essential.
  • A good working knowledge of one or more of the OPCW official languages (Arabic, Chinese, French, Russian, and Spanish) is desirable.

Internship period:

The internship is offered on a full time basis, for a minimum of three (3) months and normally up to a maximum of six (6) months.

Working hours

The internship working hours shall not exceed forty (40) hours per week.