BAuA Calls for Stricter Controls on n-Hexane to Protect Consumer Health

Health Concerns and Risks Associated with n-Hexane

n-Hexane, identified by its EC Number 203-777-6 and CAS Number 110-54-3, is a solvent used in various consumer products, including adhesives, lacquers, and insulating primers. The chemical has been linked to severe neurotoxic effects, particularly after repeated inhalation, which could lead to long-term damage to the nervous system. Additionally, there are concerns about its potential reproductive toxicity, posing a risk to human fertility and development.

A recently released Risk Management Option Analysis (RMOA) Conclusion Document by the German Competent Authority, based on data from the REACH (Registration, Evaluation, Authorisation, and Restriction of Chemicals) and CLP (Classification, Labelling, and Packaging) regulations, underscores the "realistic unacceptable health risk for consumers." This risk is especially significant when n-hexane-containing products are used indoors, such as in do-it-yourself (DIY) activities, where poor ventilation can exacerbate exposure levels.

Proposed Regulatory Actions for n-Hexane

In response to these health risks, the RMOA suggests several regulatory measures to mitigate the dangers associated with n-hexane exposure:

1. Harmonised Classification and Labelling: The German authority has proposed changes to the current classification of n-hexane under the CLP regulation. The proposal includes reclassifying n-hexane's specific target organ toxicity following repeated exposure (STOT RE) from category 2 to category 1, indicating a higher risk of irreversible health damage.
2. Identification as a Substance of Very High Concern (SVHC): The document also discusses the potential classification of n-hexane as a Substance of Very High Concern (SVHC) under the REACH regulation. This designation would be a significant step toward requiring authorisation for the use of n-hexane, given its severe neurotoxic effects that present a probable serious risk to human health.
3. Restriction Under REACH: Considering the documented health risks, the German authority has recommended imposing restrictions on the use of n-hexane in consumer products. This proposed restriction would specifically target products where n-hexane is present as a constituent or impurity, particularly in indoor environments where consumer exposure could exceed safe levels.

Next Steps and Implications for the Chemical Industry

The proposed regulatory actions on n-hexane are not yet finalised. Further discussions at the EU level will determine the specific measures to be implemented. However, these recommendations reflect a growing concern among European regulators about the potential health impacts of n-hexane and similar substances.

If these regulations are enacted, manufacturers may need to reformulate products to either reduce or eliminate n-hexane content. This could result in changes in the availability of certain products, especially those used in confined indoor spaces, thus impacting both consumers and the industry.

Public Health Impact and Future Outlook

These proposed steps by the German Competent Authority represent a proactive approach to safeguarding public health. By addressing substances like n-hexane that pose significant risks, the EU aims to minimize potential exposure to hazardous chemicals and ensure that their use is strictly controlled and monitored.

As regulatory discussions continue, various stakeholders—including industry representatives, consumer advocacy groups, and public health experts—are expected to provide valuable input on the proposed measures. The final outcome of these discussions will have far-reaching implications for consumer safety and the chemical regulatory landscape across Europe.