Key takeaway
What This Development Means
n-Hexane has been identified as an SVHC under REACH due to its neurotoxic effects, meeting the criteria of equivalent level of concern. This decision is likely to trigger new compliance duties and strategic planning for companies across the EU chemicals supply chain.
What does the SVHC designation of n-hexane mean for companies?
Firms must comply with Candidate List duties, including supply chain communication and potential notification to ECHA. The SVHC status may prompt substitution, reformulation, or additional risk management for articles containing n-hexane.
Why was n-hexane classified under equivalent level of concern?
Despite not falling under traditional SVHC hazard classes, ECHA determined n-hexane poses serious, irreversible effects on the nervous system, substantiated by patient case data. This justified its classification under Article 57(f) of REACH.
Source basis: ECHA’s Member State Committee December meeting highlights
The European Chemicals Agency’s (ECHA) Member State Committee (MSC) has unanimously agreed to identify n-hexane as a Substance of Very High Concern (SVHC) under Article 57(f) of REACH. The decision, finalised during the 92nd MSC meeting held in Helsinki from 9–11 December 2025, marks a regulatory milestone as it classifies n-hexane for its neurotoxic effects with an equivalent level of concern (ELoC) to other SVHCs. The substance will be formally added to the Candidate List by February 2026, impacting manufacturers, downstream users and suppliers handling n-hexane across the EU chemicals value chain. ## Why n-hexane is now an SVHC n-Hexane (EC 203-777-6) was proposed by the Slovenian competent authority for SVHC identification due to its irreversible neurotoxic effects upon prolonged exposure. The justification relied on its harmonised classification as STOT RE 1 H372 (causing damage to the nervous system through prolonged or repeated exposure), in combination with case-specific data demonstrating long-term health impacts. ECHA’s MSC confirmed that n-hexane meets the criteria of equivalent level of concern, considering evidence such as the irreversibility of effects, societal impacts, and lack of a safe concentration. Data from patient follow-ups showed persistent symptoms even four years after exposure ceased, strengthening the argument for ELoC.
Implications Across The Chemicals Supply Chain
The identification of n-hexane as an SVHC will bring additional legal obligations under REACH. Suppliers of articles containing the substance above 0.1% weight-by-weight will need to notify ECHA and inform recipients under Article 33 duties. Substitution planning, reformulation and exposure control may become necessary, particularly in sectors where n-hexane is widely used — such as solvents in adhesives, cleaning agents, and chemical synthesis.
Furthermore, inclusion in the Candidate
List is often a precursor to authorisation or restriction, which could have commercial and operational implications for businesses relying on the substance.
Growing Momentum Behind ELoC-Based Regulation
This case represents a first-of-its-kind SVHC identification for a neurotoxic substance under the ELoC route. While not the first use of Article 57(f), the inclusion of n-hexane reflects increasing focus on emerging hazard categories, beyond CMRs and PBTs. Three NGO observers voiced strong support, while one MSC member abstained, citing data limitations on irreversibility and societal concern. During the meeting, ECHA also called for further development of guidance on ELoC determinations, signalling potential expansion of this regulatory pathway for future SVHCs.
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