ECHA Releases ARN Report on Alpha Amino Acids and Salts

ECHA grouped the 39 alpha amino acids and salts based on structural similarities and available registration data, focusing on essential and non-essential amino acids commonly used in consumer and industrial products. According to the report, substances like L-cysteine, glycine, and L-alanine, widely used in applications ranging from cosmetics to cleaning agents, do not pose significant carcinogenic, mutagenic, or reproductive toxicity (CMR) risks.

Key Findings

• Hazard Analysis: The assessment showed that none of the substances within this group exhibited persistence, bioaccumulation, or toxicity concerns, commonly referred to as PBT/vPvB. Additionally, experimental data confirmed no skin sensitization or genotoxicity risks for these chemicals.
• Wide Usage: Most of the substances are used in consumer products such as cosmetics, adhesives, and air care items, with high potential for exposure. However, the report highlighted that the exposure levels are significantly lower compared to dietary intake through supplements and nutrition.

Proposed Actions

ECHA proposed no further regulatory actions at the EU level, citing the lack of hazards in the areas of carcinogenicity, mutagenicity, and skin sensitization for all group members. Specific substances such as DL-alanine, glutamic acid, and L-leucine were mentioned as having minimal exposure risks due to their controlled use in industrial environments.

Supporting Information

The report emphasized the importance of ongoing monitoring but suggested that the current use and exposure levels of alpha amino acids do not warrant additional regulatory restrictions. The findings align with previous assessments by the World Health Organization (WHO) and the European Food Safety Authority (EFSA), which also found no safety concerns for the use of amino acids in food and feed applications.

This comprehensive assessment by ECHA offers reassurance to manufacturers and users of alpha amino acids and salts. The report's findings pave the way for continued safe usage of these substances across various industries without the need for further regulatory intervention.