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Chemical Safety Assessment

Exposure scenarios

Are you confident that your CSAs and ESs are fully compliant? Manufacturers and importers are required under the REACH Regulation to prepare chemical safety assessments (CSAs) and exposure scenarios (ESs) accurately and to relay them throughout the supply chain.

More often than not, ESs are provided in English only, even though the law stipulates that these documents must be available in the official language of the Member State. This can lead to risks during inspections, delays and extra costs.

Through CHESAR software, BIG offers you a framework that combines accuracy, efficiency and compliance.

What is CHESAR?

CHESAR is ECHA's software tool for preparing and managing chemical safety reports (CSRs) and exposure scenarios (ESs). The tool enables you to:

  • Draft or amend CSAs and CSR

  • Develop ESs and translate them easily

  • Ensure that documents are available in all official EU languages


Thanks to CHESAR software, BIG offers you a solution that is both efficient and cost-effective.

Please also read our REACH page for more background information.

Why is this important?

  • eSDSs must be translated into the official language of the member state where the product is marketed.

  • English ESs without correct translations may lead to non-compliance during inspections.

  • Drafting, maintaining, and translating CSAs and ESs requires specialised knowledge, tools and resources.

Would you like to find out how CHESAR can benefit your organisation?

Contact us

CSA and ES

A chemical safety assessment (CSA) consists of an exposure assessment and risk characterisation that is mandatory for manufacturers and importers under REACH. The results are recorded in a chemical safety report (CSR).

Once a CSR has been drafted, the corresponding exposure scenarios (ESs) must be attached to the safety data sheet (SDS).

This creates an extended SDS (eSDS). For mixtures, there is no obligation to include ESs, but the information on uses and risk management measures must be included in or attached to the SDS.

Would you like to know if CHESAR could be a solution for your organisation? Please ask our team for advice..

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Manufacturers and importers

  • Execute CSAs and risk characterisations

  • Draft and amend CSRs, ESs and (e)SDSs

  • Translate SDSs and ESs

Obligations for businesses

Downstream users

  • Check received ESs for compliance

  • Draft DU-CSRs in case of changes to the received ESs

  • Draft and translate SDSs and ESs

Besides specific advice through audits and consultancy, BIG also offers practical assistance.

In addition to CHESAR, we also use recognised models such as ECETOC TRA, EUSES, ART en ConsExpo, ensuring an accurate and scientifically sound approach for each CSA.

Furthermore, we also address the needs of lead registrants and downstream users who often require their own CSA/CSR, for example when a lead registrant does not wish to include certain uses or when specific uses must remain confidential.

Practical assistance

  • Draft or amend CSAs/CSRs, including implementation via CHESAR

  • Translate ESs into 22 EU languages using standard phrases

  • Perform compliance checks for downstream users and offer them support

  • Draft and translate DU-CSRs, SDSs

Benefits of working with BIG

  • Lower costs: translation via CHESAR instead of custom translation

  • Time saving: single entry → instantly available in multiple languages

  • Uniformity and quality: standard phrases and the familiar BIG-SDS layout

  • Expertise: years of experience and access to the appropriate software tools

Would you like to ensure that your CSA and ES are drawn up correctly and efficiently?

Do not hesitate to contact us. BIG will provide a solution that is legally compliant, coherent and cost-effective.

Contact us

With your interests in mind, BIG is the link between government and business

Contact us

Phone number: +32 (0)14 58 45 47

Emergency number: +32 (0)14 58 45 45

Fax: +32 (0)14 58 35 16

Email: info@big.be

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