Generic exposure scenarios and scaling solutions

Generic exposure scenarios (GESs) represent an efficient and pragmatic solution for evaluating and communicating health and environmental risks. They identify:

  • How a substance is used and how it is handled.
  • What operational conditions (OCs) are typical of each of its life-cycle steps.
  • What risk management measures (RMMs) are enforced.
  • What potential exposures can affect the environment and workers.

Each GES contains several contributing scenarios – or default scenarios - which describe the handling activities of the substance within one life cycle step, i.e. a specific use of the substance. A substance exposure scenario (ES) describes the typical conditions under which the use of a specific substance within one life cycle step is considered safe. All these factors, along with specific predicted no effects concentration (PNEC) for environment and derived no effect level (DNEL) for human health of the substances, are required to assess risk and to calculate the risk characterization ratio (RCR).

Once the  conditions for safe use have been established, the exposure scenarios are documented in a chemical safety report (CSR) and communicated down the supply chain by annexing them to the safety data sheet (SDS) to make the extended safety data sheet (ext-SDS), as required by REACH.

We can provide generic exposure scenarios
or scaling solutions that match your conditions.

We provide generic exposure scenarios to our customers, for any of our products for which a GES is applicable
ExxonMobil Chemical has been at the forefront of industry efforts in this area, working closely with groups such as ESIG (ESIG on GES). As a result, our extended safety datasheets (ext-SDSs) fully incorporate the GES principles and solutions. Widely endorsed, GESs have been incorporated into the European Chemicals Agency (ECHA)'s chemical safety assessment and reporting tool (Chesar) and the CEFIC guidance on REACH exposure scenarios.

We also provide scaling solutions when our customers' use conditions are outside the GES frame
When conditions of use slightly fall outside the frame defined by the GES, there is a solution: scaling, an activity that must be carried out by the user of the substance. It is intended to determine if the exposure controls identified in the exposure scenarios (ESs) contained in ext-SDS are consistent with those being applied by the user. It identifies what actions are necessary if either the use has not been registered or local exposure control conditions differ significantly to those outlined in the GES.

If you would like to receive a GES for any of our products or more information on scaling techniques and solutions, please contact your ExxonMobil Chemical sales representatives or your distributor.


Page glossary

  • CSR
  • Effect
  • ESIG
  • Exposure
  • Life Cycle
  • Risk
  • RMMs
  • Safety
  • Safety Data Sheet
  • SDS
  • Substance