Informational summary for procurement, R&D, and compliance teams. Not legal advice. For binding interpretation consult counsel and the ECHA dossier directly.
What was proposed and by whom
On 13 January 2023, five Member State authorities — the Netherlands (RIVM), Germany (UBA), Denmark (EPA), Norway (Miljodirektoratet), and Sweden (KEMI) — submitted an Annex XV restriction dossier to the European Chemicals Agency (ECHA) proposing a broad restriction on the manufacture, placement on the market, and use of per- and polyfluoroalkyl substances (PFAS). ECHA published the dossier on 7 February 2023. The proposal is the largest single REACH restriction submission in scope, covering approximately 10,000 substances.
The legal mechanism is an amendment to Annex XVII of REACH (EC 1907/2006). Adoption follows the standard restriction pathway: ECHA committee scientific opinions (RAC and SEAC), Commission proposal, REACH Committee comitology vote, scrutiny by Parliament and Council, publication in the Official Journal, then a transition period before application.
Where the dossier is now
RAC (Committee for Risk Assessment) and SEAC (Committee for Socio-Economic Analysis) are reviewing the dossier in sectoral batches, not as a single monolith. ECHA has clustered uses into approximately 14 sector groupings, each evaluated with its own derogation analysis. Public consultations across 2023 yielded more than 5,600 stakeholder comments — the highest volume in ECHA history. Final opinions are being adopted in stages through 2025 and 2026.
Key implication: there is no single "the regulation enters force on date X" outcome. Different sectors will have different transition periods, different derogation lengths, and potentially different scope reductions.
Proposed derogation classes
The original dossier proposed two derogation options, with sector-specific transition periods on top of a general 18-month implementation period. The table below summarises the original proposal as published; actual durations per sector are still being finalised in the SEAC opinion process.
| Sector | Use category | Derogation (years) | Rationale (original dossier) |
|---|---|---|---|
| Semiconductors | Photolithography, etch | 13.5 | No proven alternatives at scale |
| Medical devices | Implants, catheters | 13.5 | Safety-critical, long qualification |
| Transport (aerospace) | Hydraulic fluids, seals | 12 | Certification cycles |
| Energy | Fuel cells, batteries (membranes) | 12 | Transition technology dependence |
| Construction | Architectural coatings, sealants | 5 | Alternatives broadly available |
| Consumer mixtures | Cosmetics, ski wax | 0–1.5 | Substitution feasible now |
| Optical coatings | Low-RI fluoropolymer layers | 5–7 (est.) | PFAS-free alternatives exist (e.g. Kriya RI 1.16) |
Source: ECHA Annex XV restriction report (February 2023), Tables 17 and 18. Optical coatings row is the authors' interpretation based on substitution availability — not an ECHA category label.
Why optical coatings sit in the "short derogation" band
In the dossier's sector analysis, derogation length is driven primarily by the availability of viable PFAS-free alternatives. For optical low-RI applications, the historical incumbent is amorphous fluoropolymer (refractive index roughly 1.30 to 1.38, applied by solvent casting). For broadband AR stacks, the target low-RI value is below 1.40 to maximise contrast against high-RI layers.
PFAS-free low-RI coatings reaching RI 1.16 — based on engineered nanoporous silica — are now produced at industrial scale. This shifts the optical coating category from "no alternative exists" (long derogation) to "substitution available, time-limited transition appropriate" (5 to 7 year band). The technical case for "essential use" status in optical coatings is therefore weak.
See PFAS-free coatings technology for measured RI 1.16 to 2.00 performance and processing data.
Decision matrix — fluoropolymer vs PFAS-free low-RI
| Criterion | Fluoropolymer low-RI | PFAS-free nanoporous silica |
|---|---|---|
| RI range | 1.30 – 1.38 | 1.16 – 1.45 |
| Regulatory horizon (EU) | 5–7 year derogation likely | Out of scope |
| U.S. state restrictions | Already in force (ME, MN, CA) | Compliant |
| OEM phase-out clauses | Active across electronics, auto | Meets clauses |
| RI contrast vs HRI 1.95 | 0.57 – 0.65 | 0.50 – 0.79 |
| R2R wet-coat compatible | Yes (solvent cast) | Yes (gravure, slot-die) |
| Overcoatable | Limited (low surface energy) | Yes (high surface energy) |
| Reformulation lead time | N/A (status quo) | 12 – 36 months including qualification |
What this means for an optical coating supply chain
The procurement-side implications are concrete:
- Supplier audit scope expands. "PFAS-free" questionnaires now reach below Tier-2. Expect to document raw-material composition, processing aids, and analytical evidence.
- Reformulation runways are shorter than they look. A 5-year derogation minus 18-month implementation period minus typical 12-to-36-month optical qualification cycles leaves the actionable window inside 24 months of the final regulation date.
- Dual-sourcing for the transition is realistic. Procurement that pre-qualifies a PFAS-free alternative now retains the option to switch when audit pressure, derogation reduction, or jurisdictional spread (U.S., Asia) forces it.
- The cost premium has compressed. Industrial-scale PFAS-free low-RI production now competes on direct material cost with fluoropolymer alternatives, particularly when downstream regulatory carrying cost is factored in.
Frequently asked questions
When does the EU PFAS restriction come into force?
No final entry into force date is set. The Annex XV dossier was submitted by five Member States in January 2023 and published by ECHA in February 2023. RAC (Committee for Risk Assessment) and SEAC (Committee for Socio-Economic Analysis) opinions are being developed in sectoral batches through 2025 and 2026. After both opinions are finalised, the Commission drafts an amendment to Annex XVII of REACH; entry into force typically follows 18 to 24 months after publication in the Official Journal. Realistic earliest application date for first sectors is 2027 to 2028.
Are all PFAS in scope, or only PFOA, PFOS, and PFHxS?
The proposal covers approximately 10,000 substances under a broad definition: any substance containing at least one fully fluorinated methyl (CF3-) or methylene (-CF2-) carbon atom (without any H, Cl, Br, or I attached). This includes fluoropolymers (PTFE, PVDF, FEP), side-chain fluorinated polymers, fluorinated surfactants, and fluorinated processing aids. Polymers of Low Concern (PLC) carve-outs are under debate but not granted by default.
What does this mean for optical coatings that use fluorinated low-refractive-index materials?
Fluoropolymer-based low-RI coatings (typically amorphous fluoropolymers with RI 1.30 to 1.38) fall within the proposal scope. Suppliers relying on these chemistries face either time-limited derogation (5 to 13.5 years depending on sector) or substitution. Kriya operates an entirely PFAS-free RI platform from 1.16 to 2.00, which is in scope only as a substitution destination, not as a regulated substance.
Is "PFAS-free" a verifiable claim?
Yes, by absence of fluorine in the formulation. Kriya can confirm via Certificate of Analysis that no PFAS is present at the formulation level, and supply chain documentation traces raw materials. Procurement teams should request both. Trace-level analytical confirmation (e.g. TOF — Total Organic Fluorine) is available for materials shipped to customers requiring sub-ppm verification.
Should we wait for the final regulation before reformulating?
Most Fortune 500 OEMs are not waiting. The reasons: (1) restricted chemicals already trigger downstream supplier audits today, (2) reformulation cycles for optical coatings take 12 to 36 months including qualification, (3) public-facing PFAS phase-out commitments have been made independently of regulation, and (4) U.S. state-level rules (Maine, Minnesota, California) already apply. The default planning assumption is to be PFAS-free by 2027.
What Kriya provides
Kriya operates a 100% PFAS-free RI platform from 1.16 to 2.00 — covering low-RI, mid-RI, and high-RI ranges. No fluorine in the chemistry, no fluorinated processing aids, no PFAS surfactants. ISO 9001:2015 manufacturing. Certificate of Analysis with every shipment. Total Organic Fluorine analytical confirmation available on request.
The platform is not a research-stage substitute. RI 1.16 LRI has been in production since 2025; the full RI 1.16 to 2.00 portfolio is validated across display, automotive, and optoelectronics applications. See the product catalogue for codes, specifications, and substrate compatibility.