Arvin Substances: Regulatory Focus and Compliance Challenges

Arvin substances, organic compounds identified by Professor Erik Arvin, are non-intentionally added substances (NIAS) that migrate from plastic additives into drinking water. They are typically impurities or degradation products formed from intentionally added stabilizers and antioxidants used in polymer formulations. These include phenolic compounds such as 4−ethylphenol (Arvin 1) and 3,5−di-tert-butyl-4−hydroxy-styrene (Arvin 5), with their Maximum Tolerable Concentrations (MTCtap) listed in Table 1. Their presence has raised concerns due to potential health risks and odor issues.

Table 1 - Arvin 1–10 substances listed in the European Positive List and their Maximum Tolerable Concentrations (MTCtap)

The updated EU Drinking Water Directive introduces specific migration limits for ten Arvin substances. Notably, Arvin 1 and Arvin 5 have proposed limits as low as 0.1 µg/L. These stringent thresholds present a dual challenge: resin manufacturers must reformulate additive recipes to reduce Arvin content, while analytical laboratories must develop and apply highly sensitive detection methods to reliably quantify these substances at ultra-trace levels.

Advanced Detection of Arvin Substances for Regulatory Compliance

Norner stands at the forefront of polymer analysis, offering cutting-edge techniques to detect Arvin impurities at the ultra-trace levels mandated by the EU Drinking Water Directive. By combining internal up-concentration techniques with LC-UV-MS-QTOF analysis, Norner is exploring and developing meth-ods to detect Arvin substances down to 0.1 ppb. This capability ensures compliance with the strict migra-tion limits set by the EU, including substances such as Arvin 1 and Arvin 5.

Norner’s laboratory infrastructure and expert team enable precise quantification of NIAS in both polymer matrices and migration water, supporting polymer suppliers in developing new polymer formulations with reduced Arvin concentrations. In addition, Norner supports pipe manufacturers in delivering pipes that comply with the new regulations, while maintaining essential mechanical integrity and long-term ageing performance.

Ensuring Compliance with EU Drinking Water Standards

The EU’s revised Drinking Water Directive marks an important shift toward safer drinking water infrastruc-ture. Norner is well-positioned to support the entire drinking water pipe value chain by evaluating prod-ucts to meet the stringent requirements of the new regulation.

Acknowledgement: to support clients, the Future Materials Catapult project “Detection of Arvin compounds” was developed by Norner with support from Siva under GBER Article 31. Read more about the services at Future Materials.

Contact our experts Hany Anwar if you want to discuss Arvin substances.