The European Union’s restriction on perfluorohexanoic acid (PFHxA) reached an important deadline on October 10, 2026. Certain consumer products and chemical mixtures can no longer be placed on the EU market or used if they contain PFHxA, its salts or related substances at concentrations meeting or exceeding specified limits.

For industrial chemical manufacturers and procurement teams, the immediate challenge is determining which products are covered and whether supplier documentation provides enough evidence to establish compliance.

The new PFHxA restriction is not a universal ban on every PFAS chemical or industrial application. It applies to defined substance groups, products, uses and concentration thresholds.

That distinction matters when purchasing fluorinated additives, coating ingredients, textile-treatment chemicals and other materials that may enter European supply chains.

A supplier statement claiming that a product is “PFAS-free” or “REACH compliant” does not, by itself, establish that the material meets the applicable requirements.

What Changed on October 10, 2026?

Commission Regulation (EU) 2024/2462 introduced Entry 79 into Annex XVII of the EU REACH Regulation.

The European Commission adopted the measure on September 19, 2024, with different application dates for different uses.

According to the European Commission’s announcement of the PFHxA restriction, the measure targets uses where exposure risks are not adequately controlled and suitable alternatives are considered available.

The first major consumer-product restrictions became applicable on October 10, 2026.

They cover:

• Textiles, leather, furs and hides used in clothing and related accessories intended for the general public.
• Footwear intended for the general public.
• Paper and cardboard used as food-contact materials.
• Chemical mixtures intended for the general public.
• Cosmetic products covered by the relevant EU cosmetics legislation.

For chemical suppliers, the inclusion of mixtures is particularly important.

A consumer waterproofing treatment, for example, may fall within the restriction even though it is sold as a formulated chemical product rather than as a finished textile.

However, the rule does not automatically prohibit every industrial coating, process chemical or fluorinated material.

Applicability depends on the exact chemical substances, the product category and its intended use.

The Two PFHxA Concentration Limits Are Different

Entry 79 establishes separate concentration thresholds for PFHxA and its salts, and for PFHxA-related substances.

The restrictions apply at concentrations equal to or greater than the relevant thresholds.

Restricted substance group	Concentration threshold	Equivalent mass concentration
Sum of PFHxA and its salts	25 parts per billion	0.025 mg/kg
Sum of PFHxA-related substances	1,000 parts per billion	1 mg/kg

These thresholds are expressed for homogeneous material.

A homogeneous material is one with a uniform composition throughout, as relevant to the regulatory assessment.

The complete product should not automatically be treated as a single analytical sample if it contains different materials that need separate evaluation.

For example, a coated textile may contain fibers, a surface finish and other components.

Testing an entire product as a combined sample can potentially dilute the concentration of a restricted substance present in one component.

A suitable compliance assessment must therefore consider how the legal requirement applies to the actual material.

The current REACH Annex XVII text, including Entry 79 also defines PFHxA-related substances through specified molecular structures and their potential to degrade or transform into PFHxA.

This is broader than testing for PFHxA alone.

A supplier may demonstrate that the acid itself is present below 25 ppb while still needing to address related substances subject to the separate 1,000 ppb limit.

The numerical thresholds should not be interpreted as acceptable concentrations for every material regardless of use. The product must first fall within the relevant legal scope.

Why Chemical Identity Matters More Than a General PFAS Declaration

PFAS refers to a large family of per- and polyfluoroalkyl substances.

Different PFAS compounds have different chemical structures, applications, environmental properties and regulatory restrictions.

A supplier’s statement that a material contains no intentionally added PFHxA may be useful, but it does not necessarily answer every relevant question.

PFHxA may be associated with impurities or transformation products arising from certain related chemical substances.

The restriction expressly addresses related substances that can degrade or transform into PFHxA.

Consequently, a purchasing review should establish the chemical identity of potentially relevant ingredients rather than rely entirely on marketing terminology.

For a formulated industrial material, the technical review may need to consider active ingredients, processing aids, residual substances and relevant impurities.

However, this does not mean every fluorinated compound falls within Entry 79.

The legal definition contains specific structural criteria and exclusions.

A chemical’s regulatory status should be determined from its actual identity and the applicable legislation, not from the presence of fluorine alone.

An Important Distinction for Titanium Dioxide Buyers

Titanium dioxide, TiO₂ (CAS 13463-67-7), is an inorganic white pigment.

Its chemical identity alone does not establish the presence of PFHxA or other PFAS substances.

However, a finished coating formulation may contain several additional materials.

These can include surface-treatment chemicals, dispersants, processing aids and specialty additives.

If a coating or mixture is being evaluated for a regulated EU use, the complete relevant formulation needs consideration.

It would be inaccurate to declare every titanium dioxide pigment subject to the new PFHxA restriction simply because it is used in coatings.

The appropriate starting point is the product’s actual composition and intended market.

Does a Laboratory Result Prove PFHxA Compliance?

Analytical testing can provide important evidence, but the test must be appropriate for the regulatory question.

One difficulty is that different laboratory methods measure different groups of fluorinated substances.

For example, a method designed to identify specific PFAS compounds does not necessarily measure every PFHxA-related substance.

A broader fluorine-screening method may detect fluorinated material without identifying the exact compounds present.

The U.S. Environmental Protection Agency explains these distinctions in its guidance on analytical methods for PFAS.

EPA Method 1633A uses liquid chromatography with tandem mass spectrometry (LC-MS/MS) to determine 40 specified PFAS compounds in defined environmental sample types.

Those sample types include wastewater, groundwater, soil, biosolids and tissue.

EPA Method 1621 measures adsorbable organic fluorine (AOF) in aqueous samples using combustion ion chromatography.

AOF testing provides an aggregate measurement.

It does not identify which specific organic fluorine compounds produced the result.

These methods are useful examples of different analytical approaches, but neither should be treated as a ready-made universal compliance test for every textile, cosmetic or industrial chemical formulation.

Their published scopes and validation conditions matter.

Why the Reporting Limit Can Determine Whether a Result Is Useful

Consider a hypothetical laboratory report stating:

PFHxA: Not Detected — reporting limit 50 ppb

The applicable concentration threshold is 25 ppb.

A result reported below 50 ppb does not necessarily demonstrate that the concentration is below 25 ppb.

The material might contain PFHxA at a concentration that falls below the laboratory’s reporting threshold but meets or exceeds the regulatory limit.

The laboratory therefore needs an appropriate method with sufficient sensitivity for the required decision.

The same principle applies to PFHxA-related substances.

A laboratory that measures only one target compound cannot automatically establish the total concentration of an entire legally defined group.

Analytical reports should identify the compounds measured, reporting units, quantitation limits, sample preparation, method scope and relevant limitations.

Those details are especially important when suppliers use different laboratories.

What Chemical Suppliers Should Provide to EU Buyers

A useful compliance declaration should identify the exact product and the basis on which the supplier assessed it.

For industrial procurement, the documentation should establish the relevant chemical composition, intended uses, applicable restriction and supporting evidence.

The depth of verification should reflect the product’s regulatory status and the consequences of noncompliance.

Where confidential formulation information is involved, a supplier may be able to provide a structured regulatory declaration or arrange an appropriate confidential assessment.

The documentation should answer whether PFHxA, its salts and relevant related substances have been evaluated.

It should also explain whether the assessment relies on composition records, supplier information, laboratory testing or a combination of evidence.

Where testing is performed, the analytical procedure must be suitable for the actual material.

A result from an environmental water method should not automatically be applied to a complex industrial coating without evidence that the procedure works for that matrix.

The existing guide to supplier certificate of analysis verification explains why reported results and independently established product conformity are not the same.

Four Documents Serve Different Purposes

A safety data sheet (SDS) communicates chemical hazards, handling precautions and applicable regulatory information. It is not automatically proof of compliance with a parts-per-billion impurity restriction.

A certificate of analysis (CoA) reports selected test results for an identified production lot. It establishes what the supplier reported, not necessarily the full regulatory composition of every finished product incorporating that lot.

A product specification defines agreed material requirements, including chemical identity, analytical limits and applicable quality criteria.

An independent laboratory report can provide additional evidence for the substances, sample and analytical methods examined.

None of these documents automatically replaces the others.

For a high-risk regulated application, the most useful compliance file connects the supplier declaration to the actual product composition, relevant legal restrictions and appropriate supporting evidence.

The October 2026 Deadline Does Not Apply to Every Use

The PFHxA restriction contains several application dates and exemptions.

Restrictions for certain firefighting foams used in training, testing and public fire services began on April 10, 2026, subject to the regulation’s conditions and exceptions.

The October 10, 2026, requirements apply to the specified consumer products and mixtures.

A further restriction covering other textiles, leather, furs and hides intended for the general public is scheduled for October 10, 2027.

The measure also contains later requirements for firefighting foams used in civil aviation.

Importantly, Entry 79 includes a provision for articles and mixtures already placed on the market before the October 10, 2026, application date.

That exception should not be confused with a general exemption for products merely manufactured before the deadline.

Businesses relying on the provision should establish the relevant placing-on-market circumstances and retain appropriate supporting records.

Certain personal protective equipment, medical devices and construction textiles also have specified exemptions from particular paragraphs.

These exclusions are not blanket exemptions for every fluorinated industrial material.

The compliance assessment must address the precise provision, product category and use.

The Broader EU PFAS Restriction Is Still a Separate Process

Another source of confusion is the difference between the adopted PFHxA restriction and the proposed wider EU restriction on PFAS.

The European Commission’s July 2, 2026, REACH Restrictions Roadmap update confirms that work on a broader PFAS restriction remained ongoing.

The wider proposal addresses a much larger range of substances and industrial applications.

It should not be described as an already adopted general prohibition simply because the narrower PFHxA restrictions have entered their applicable phases.

For purchasing teams, the distinction affects supplier qualification.

A chemical may not be covered by the October 2026 PFHxA restriction but could still be relevant to future regulatory developments.

Conversely, a supplier may be required to address an existing restriction even while the wider proposal remains under evaluation.

The site’s guide to maintaining a REACH restriction procurement watchlist provides a framework for separating adopted legal requirements from proposed future restrictions.

A reliable watchlist should record the actual substance group, product use, legal status, applicable market and next review date.

Treating every PFAS-related development as one regulation can lead to unnecessary material substitutions or missed compliance obligations.

Chemical Buyers Need Evidence That Matches the Restriction

The October 10, 2026, milestone creates a practical documentation requirement for companies supplying materials into covered EU applications.

Chemical buyers should confirm whether a product falls within Entry 79 before demanding unnecessary testing or accepting general assurances.

If it does, the supplier’s evidence must address the actual substance groups and concentration thresholds.

That may require composition review, suitable analytical testing, relevant supplier declarations and effective change control.

A product described as PFHxA-free is not automatically exempt from other chemical restrictions. A laboratory result below its reporting limit is not automatically proof of regulatory compliance.

The strongest approach is to connect chemical identity, end use, legal scope and analytical evidence before approving the material.

That provides a more defensible basis for supplier selection than relying on broad environmental claims or treating every fluorinated material as prohibited.