Legal & Regulatory Reference · Canada & United States
Nanomaterials fall under no single statute in either country. This document identifies the actual legal instruments in force in Canada and the United States, clarifies exactly when pre-market notification applies, and maps five regulatory layers — occupational exposure, transport classification, waste disposal, defence procurement, and international harmonization — that general summaries of the framework routinely leave out, while keeping chemical regulation analytically separate from procurement policy.
Four points of legal precision, in order of importance.
Notification is triggered only for substances that are new to the Domestic Substances List (DSL), and only above applicable volume thresholds. A nanoscale form of a substance already on the DSL is not automatically treated as a new substance under CEPA.
In practice: nanoscale forms of existing DSL substances are managed principally through Significant New Activity (SNAc) provisions under CEPA, or through a section 71 information-gathering notice — mechanisms with a different trigger, a different timeline and a different obligation than full NSN notification.“CEPA / Health Canada nanomaterials policy” conflates a federal statute, a department and a non-binding guidance framework. Nanomaterials are captured primarily through the New Substances Notification Regulations (Chemicals and Polymers) under CEPA 1999, with administration split between Environment and Climate Change Canada (ECCC) and Health Canada.
In practice: the Framework for the risk assessment of manufactured nanomaterials (HC, 2015) is guidance, not law, and creates no independent legal obligation. The administering authority is ECCC / Health Canada jointly — not Health Canada alone.General references to “TSCA reporting” obscure the specific instruments that actually bind: the TSCA section 8(a) nanoscale materials reporting rule codified at 40 CFR 704.20; Significant New Use Rules (SNURs) routinely issued on nano-substance PMNs; and FIFRA, which requires full pesticide registration for nanoscale pesticidal actives such as nanosilver and antimicrobial coatings.
In practice: 40 CFR 704.20 (reporting on existing nano-substances), applicable SNURs (activity-specific restrictions), and FIFRA registration (full evidentiary burden for pesticidal use) all apply as distinct US instruments.Defence procurement content rules — specialty-metals clauses, ITAR, export controls — are acquisition and trade policy instruments, not chemical regulation. No unified continental chemical framework exists; the two bodies of law remain analytically and legally distinct.
In practice: procurement, sourcing restrictions and export controls form a separate legal layer, covered in Section 4 below. Occupational exposure limits, transport classification and international harmonization bodies — frequently left out of general summaries — are covered in Sections 3 and 5.Instrument-level precision, with trigger and practical effect stated separately for each of the ten instruments in force.
| Jurisdiction | Instrument (precise) | Trigger | Practical effect |
|---|---|---|---|
| Canada | CEPA 1999 — New Substances Notification Regulations (Chemicals and Polymers); joint ECCC / Health Canada | Substance absent from the DSL; above schedule volume thresholds | Pre-manufacture / pre-import notification with risk-assessment period (Schedule 1: 5 days; Schedule 5: 120 days); nanoscale characterisation must accompany the dossier |
| Canada | CEPA — Significant New Activity (SNAc) provisions | New use or new physical form (e.g., nanoscale) of an already-listed substance | Principal regulatory mechanism for nanoscale forms of DSL substances; obligation attaches to the specified new activity, not to the substance per se |
| Canada | CEPA section 71 information-gathering notices | Ministerial notice published in the Canada Gazette | Mandatory data submission by industry; used by ECCC to build the nano-substance database and feed risk-priority decisions; non-compliance is a statutory offence |
| Canada | Food and Drugs Act — Food Additive Regulations & Novel Food Provisions (Health Canada) | Nanomaterial intended for use in food, drugs, cosmetics, or medical devices | Safety assessment required before market authorisation; Health Canada guidance 2014 / 2019 applies on a case-by-case basis; no dedicated nano-specific approval track |
| Canada | Canada Consumer Product Safety Act (CCPSA) | Consumer product containing a nanomaterial presenting an unreasonable hazard | Recall, prohibition, mandatory incident reporting authority; Health Canada issued a nano-specific stakeholder consultation in 2017; no product-category rule has been finalised to date |
| USA | TSCA section 5 — Pre-Manufacture Notice (PMN) and Significant New Use Rules (SNURs) | Chemical substance not on the TSCA Inventory; or new use of a reviewed substance covered by a SNUR | EPA 90-day review; may issue consent order, proposed rule, or section 5(e) order; SNURs on nano-PMNs routinely restrict CNT composites and nano-Ag coatings to specific approved applications |
| USA | TSCA section 8(a) — Nanoscale Materials Reporting Rule (40 CFR 704.20) | Manufacture or processing of a discrete nanoscale form of a TSCA Inventory substance; above 1 kg/year threshold | One-time report to EPA: substance identity, production volume, methods of manufacture, exposure routes, available hazard data. Reporting obligation only — confers no market authorisation |
| USA | Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA) | Nanoscale substance with a pesticidal claim (nanosilver, nano-TiO₂ antimicrobial coating, etc.) | Full new pesticide registration required regardless of prior bulk-form registration; EPA has denied registrations for certain nanosilver products citing insufficient efficacy and toxicology data |
| USA | Federal Food, Drug, and Cosmetic Act (FFDCA) — FDA guidance 2014 & 2022 | Nanomaterial in food, drug, cosmetic, or medical device | Safety review required; FDA guidance recommends pre-submission engagement; no legally binding nano-specific approval category; sponsors bear full burden of demonstrating nano-form safety (GRAS or applicable standard of identity) |
| USA | Consumer Product Safety Act (CPSA) — CPSC authority | Consumer product containing a nanomaterial presenting a substantial product hazard | Recall, ban, civil penalty; CPSC staff report on nano in consumer products (2017); no nano-specific rule promulgated; enforcement relies on the general substantial-product-hazard standard |
These three sub-layers are frequently left out of general summaries of the framework. Each carries independent compliance obligations and significant liability exposure.
| Jurisdiction | Instrument | Nano-specific limits? | Practical status |
|---|---|---|---|
| Canada | Canada Occupational Health and Safety Regulations (SOR/86‑304); provincial OHS regulations | No. No binding nano-specific OELs exist federally or in any province. | NIOSH RELs are widely cited in Canadian workplace safety programs and by insurers and prime contractors as the applicable standard of care, even though they are advisory only. CCOHS publishes them in its chemical hazard database. |
| USA | NIOSH Recommended Exposure Limits (RELs); OSHA General Duty Clause (OSH Act section 5(a)(1)) | NIOSH RELs are advisory. OSHA has issued no nano-specific PELs. | Key RELs: CNTs / CNFs = 1 µg/m³ (respirable, 8-h TWA); ultrafine TiO₂ = 0.3 mg/m³; nano-Ag = 0.9 µg/m³; nano-carbon black = 0.1 mg/m³. OSHA enforces under the general duty clause where a recognised hazard and feasible controls exist. |
| Jurisdiction | Instrument | Nano-specific class? | Practical status |
|---|---|---|---|
| Canada | Transportation of Dangerous Goods Act (TDG Act, S.C. 1992, c. 34) and TDG Regulations | No nano-specific schedule or classification code. | Nanomaterials are classified by the physicochemical properties of the base substance. Combustible nano-metal powders (Al, Mg, Ti) fall under Class 4.1 or 4.2; reactive nano-metals may additionally trigger Class 8. Transport Canada has issued no nano-specific guidance. |
| USA | DOT Hazardous Materials Regulations (49 CFR Parts 171–180) | No nano-specific class. | Classification follows the parent substance. PHMSA acknowledged the gap in a 2022 advance notice but has not proposed a rule. For air transport, IATA DGR applies; for sea, IMDG Code applies — neither has nano-specific schedules. |
| Jurisdiction | Instrument | Nano-specific rule? | Practical status |
|---|---|---|---|
| Canada | CEPA ss. 185–194 (Export and Import of Hazardous Wastes); provincial Environmental Protection Acts | No. Nano-waste is classified by base-substance hazard class. | Nano-metal waste with toxic, flammable, or corrosive properties is captured under existing hazardous-waste schedules; nano-form is not a distinct category. Cross-border export of nano-waste requires a permit under CEPA and the Basel Convention. |
| USA | Resource Conservation and Recovery Act (RCRA), 42 USC 6901; EPA Nanotechnology White Paper 2007; EPA nano-waste guidance 2015 | No binding nano-specific category. | EPA 2015 guidance identifies nano-wastes as likely RCRA hazardous when the base substance is listed or exhibits a hazardous characteristic. The nano-form may exhibit reactivity or toxicity at lower concentrations than the bulk form; this is not reflected in any current listing threshold. |
Defence acquisition, export controls and supply-chain integrity rules, governed by trade and procurement law and analytically distinct from chemical regulation.
| Instrument | Scope relevant to nanomaterials |
|---|---|
| Defence Production Act (DPA, R.S.C. 1985, c. D-1) | Controlled Goods Program (CGP) under the DPA requires registration and security screening for any person who examines, possesses or transfers controlled goods including nano-composite armour panels, nano-energetic formulations and nano-enabled sensing systems |
| Export and Import Permits Act (EIPA) | Nano-materials and nano-enabled devices on the Export Control List (ECL) — principally Group 1 (dual-use) — require an export permit; nano-composites in aerospace, defence or nuclear applications are commonly captured under ECL item 1-1.C.12 and related entries |
| PSPC Supply Chain Integrity / Integrity Regime | Federal suppliers of nano-enabled materiel to DND are subject to supplier vetting under the general integrity attestation; no nano-specific clause has been formalised |
| ITAR re-export burden (US-origin nano components) | Canadian integrators incorporating US-origin ITAR-controlled nano-materials (nano-energetics, controlled CNT composites) must obtain US State Dept re-export authorisation even for intra-NATO transfers; this extraterritorial obligation has no EIPA equivalent and is a recurring procurement friction point |
| Instrument | Scope relevant to nanomaterials |
|---|---|
| NDAA — specialty-metals clauses (10 USC 4863, formerly s. 2533a) | Nano-engineered specialty metals (Ti, Ta, W, Co alloys in nano-composite form) in defence end-items must be melted or produced in the US or a qualifying country; nano-powder feedstock from non-qualifying countries triggers non-compliance |
| DFARS 252.225-7014 / 252.225-7016 (Specialty Metals) | Contract-level flow-down of the NDAA specialty-metals requirement; prime contractors must certify nano-metal feedstock origin through the full supply chain |
| International Traffic in Arms Regulations (ITAR, 22 CFR 120–130) | Nano-energetic materials (nano-Al thermite, nano-RDX composites), nano-enabled munition fuzes and certain nano-composite structural parts are controlled under the US Munitions List; applies to Canadian defence suppliers by operation of US law |
| Export Administration Regulations (EAR, 15 CFR 730–774) | Commerce Control List captures nano-semiconductor substrates (ECCN 0B001 and related), CNT composites in aerospace, and nano-enabled sensing systems; exports to most non-partner destinations require a BIS licence |
| Cybersecurity Maturity Model Certification (CMMC 2.0) | Applies to contractors handling CUI related to nano-enabled sensing, autonomous systems and defence-material R&D; Level 2 (NIST SP 800-171) is the minimum for most nano-material supply contracts with controlled technical data |
No binding continental chemical framework for nanomaterials exists. These are the formal coordination points.
| Body | Mandate | Canada | USA | Status |
|---|---|---|---|---|
| ISO/TC 229 (Nanotechnologies) | Terminology, measurement, characterisation and safety standards for nano; >100 published standards | SCC | ANSI | Active; ISO/TS 80004 vocabulary series and ISO 19007 in vitro assay published |
| OECD Working Party on Manufactured Nanomaterials (WPMN) | Risk assessment guidance; testing guidelines TG 318, 319A/B, 428; comparative regulatory mapping | ECCC / HC | EPA / NIOSH | Active; WPMN-16 (2024) issued updated guidance on grouping and read-across for nano-risk assessment |
| ASTM International E56 Committee (Nanotechnology) | Test methods for nano characterisation (particle size, surface area, dissolution); referenced by EPA in PMN review | NRC | NIST; EPA staff | Active |
| Canada–US Regulatory Cooperation Council (RCC) — NanoTech working group | Bilateral alignment on nano regulation; produced joint work-plan 2012–2014 and a progress report in 2019 | ECCC, HC, TBS | EPA, FDA, OIRA | Dormant since 2019. No joint deliverable published. This is the most actionable gap in the continental framework. |
| UNECE GHS — nano provisions (Rev. 9, 2021) | Classification and labelling of nano-hazards in SDS and product labels | ECCC / WHMIS | EPA / OSHA / DOT (partial) | Rev. 9 nano provisions not yet fully transposed into WHMIS 2015 or OSHA HazCom 2012; creates SDS inconsistency at the border |
Other jurisdictions have moved beyond general chemical law by requiring nanoform-specific data, product notification, public traceability or structured grouping. These systems provide practical models for Canada and the United States without implying that every foreign rule should be copied wholesale.
| Jurisdiction | Regulatory advance | What it changes in practice | Lesson for North America |
|---|---|---|---|
| European Union | REACH Annexes require nanoform-specific characterization and safety data; the Cosmetics Regulation requires notification of nanomaterials before market placement and ingredient labelling with “[nano]”. | Particle size distribution, shape, surface chemistry and dissolution behaviour become explicit parts of the regulatory dossier rather than optional supporting information. | Adopt a common nanoform data schedule for CEPA NSN and TSCA PMN submissions, while preserving risk-based exemptions for genuinely low-exposure uses. |
| France | The R-Nano scheme requires annual declarations for substances in nanoparticle state manufactured, imported or distributed above the applicable threshold. | Authorities obtain market-volume and supply-chain information on existing nanoforms, not only newly notified substances. | Create a shared Canada-US registry with one confidential industry filing and a public, non-confidential inventory of substance identity, use category and aggregate tonnage band. |
| Belgium | A national nanomaterial register covers substances and mixtures placed on the market, subject to defined scope and exemptions. | Downstream professional users gain better traceability, although exemptions and overlap with EU law limit completeness. | Require supply-chain identifiers and safety-data-sheet continuity, but avoid duplicating sectoral filings already made under pesticide, food, drug or medical-device law. |
| United Kingdom | UK REACH retained nanoform information requirements, while HSE applies substance evaluation and workplace-control duties through a risk-based framework. | Post-Brexit separation demonstrates the cost of duplicating registrations and data access when two closely linked markets do not recognize each other’s assessments. | Build mutual recognition and data-sharing into Canada-US rules before separate databases and incompatible dossier formats become entrenched. |
| Switzerland | Chemicals and product rules use nano-specific definitions and disclosure requirements, with alignment to important EU classifications while retaining national notification mechanisms. | A smaller market can remain interoperable with a larger neighbour without surrendering its own enforcement authority. | Use aligned definitions, test methods and dossier fields while allowing each country to retain final risk-management decisions. |
| Australia | AICIS regulates industrial chemicals through a risk-proportionate categorization framework; nanoscale characteristics can alter introduction category, information needs and assessment pathway. | Regulatory effort is directed toward exposure and hazard rather than particle size alone. | Pair mandatory nanoform identification with tiered review: rapid treatment for low-exposure, well-characterized uses and full assessment for persistent, bioactive or highly dispersive forms. |
| Japan | Existing chemical, food, cosmetic and occupational laws apply by sector, supported by national measurement standards and voluntary industry stewardship. | Strong metrology and technical guidance improve dossier consistency, but the absence of a unified public nano inventory limits transparency. | Fund reference materials, validated measurement methods and interlaboratory comparisons through NIST and NRC alongside any new reporting duty. |
| South Korea | K-REACH combines registration and evaluation duties with product-sector controls and growing attention to nano-specific safety information. | Data obligations are integrated into a modern chemicals-management system rather than handled only through voluntary guidance. | Embed nanoform fields directly into existing CEPA and TSCA digital workflows instead of creating a disconnected parallel regulator. |
Six concrete asymmetries with quantifiable compliance impact.
Eight prioritized actions. The first three are achievable within existing statutory authority; the remainder require negotiated bilateral instruments.
ECCC, Health Canada and EPA jointly publish an operational definition: manufactured nanomaterial = intentionally produced material in which at least one external dimension or internal structure is in the 1–100 nm range, exhibiting properties distinct from those of the bulk form. Adopt it simultaneously in NSN guidance and TSCA PMN review policy. Eliminates the agglomerated-form classification dispute without requiring statutory amendment in either country.
Establish a streamlined protocol under a revived RCC NanoTech group allowing Health Canada / ECCC to accept EPA PMN assessments for nano substances meeting agreed risk criteria, and vice versa. Modelled on the 2011 Canada–EU joint pesticide review agreement. Estimated saving: 8–14 months and USD 150,000–300,000 per substance for in-scope materials.
Convene a joint CCOHS–NIOSH technical working group to convert existing NIOSH RELs for CNTs/CNFs, nano-TiO₂, nano-Ag and nano-carbon-black into co-published binding occupational exposure limits. Federal adoption through COHSR amendment; provincial recommendation through CCOHS advisory. Provides the regulatory safe harbour currently absent in both jurisdictions.
Link the TSCA section 8(a) 40 CFR 704.20 reporting database with the CEPA section 71 nano-dataset using the NanoReg2 substance-identifier framework. A shared non-confidential identifier eliminates duplicative reporting for manufacturers selling into both markets and provides a public transparency layer consistent with OECD WPMN commitments.
Transport Canada and PHMSA jointly issue guidance formally addressing nano-specific physical hazards — combustible nano-dusts (Al, Mg, Fe <100 nm), pyrophoric nano-metals (nano-Ti, nano-Zr), reactive nano-metal suspensions — rather than relying solely on parent-substance classification. Reduces cross-border shipment uncertainty for manufacturers and converters.
Introduce a 45-day fast-track review stream in both CEPA NSN Regulations and TSCA section 5 for nano substances with a completed OECD TG 318/319A/B dossier and a cumulative human exposure estimate below the threshold of concern. Would apply to an estimated 30–40% of current PMN/NSN filings for nano substances. Addresses the clearest shared deficiency relative to the EU.
A DND / DoD joint working group under the NORAD renewal and continental-defence cooperation framework codifies inspection, testing and chain-of-custody requirements for nano-enabled materials in: structural composites (nano-clay, CNT-reinforced polymers), energetic formulations (nano-Al thermite), sensor systems (nano-ZnO, graphene sensors), and protective coatings (nano-ceramic). Reduces programme risk and creates a harmonised supplier qualification baseline.
Reconvene the dormant RCC NanoTech group as a permanent quarterly forum with senior participation from ECCC, Health Canada, EPA, FDA and DoD, and a public register of harmonization commitments with implementation timelines. The 2019 hiatus has allowed five years of regulatory drift to accumulate. Low-cost institutional mechanism; the only prerequisite is political will to reconvene.
A single-page summary of all twelve regulatory layers across both jurisdictions.
| Jurisdiction | Regulatory layer | Key instruments | Gap / status |
|---|---|---|---|
| Canada | Chemical / product | CEPA 1999 NSN Regulations; SNAc provisions; s. 71 notices (ECCC / HC joint) | No binding nano OEL; no expedited review track |
| Canada | Food / drug / cosmetic | Food and Drugs Act; novel-food and food-additive frameworks (HC); CCPSA | Case-by-case; no dedicated nano-approval category |
| Canada | Occupational | COHSR; provincial OHS regs (NIOSH RELs advisory in practice) | No binding nano OELs in any Canadian jurisdiction |
| Canada | Transport | TDG Act & TDG Regulations (parent-substance basis) | No nano-specific classification schedule; guidance gap for nano-dusts |
| Canada | Procurement / security | Defence Production Act (CGP); EIPA (Export Control List); PSPC Integrity Regime | ITAR re-export burden on US-origin nano components; no EIPA equivalent |
| USA | Chemical / product | TSCA s. 5 PMN / SNURs; TSCA s. 8(a) nanoscale reporting rule (40 CFR 704.20) | No expedited review track; no mutual recognition with Canada |
| USA | Pesticide | FIFRA — full new registration required for nanosilver, nano-TiO₂ pesticidal actives | Higher evidentiary bar than Canada PCPA; nanosilver registration denials on record |
| USA | Food / drug / device | FFDCA; FDA voluntary guidance 2014 & 2022 | No binding nano-specific approval category; sponsor bears full burden of proof |
| USA | Occupational | NIOSH RELs (advisory); OSHA general duty clause; no nano-specific PELs | No safe harbour for compliant employers |
| USA | Transport | DOT HMR 49 CFR (parent-substance basis); PHMSA ANPRM 2022 | No nano-specific schedule; proposed rulemaking stalled |
| USA | Procurement / security | NDAA specialty-metals clauses; DFARS 252.225-7014/16; ITAR; EAR; CMMC 2.0 | Extraterritorial ITAR burden on Canadian suppliers; no continental harmonization |
| Continental | Harmonization | ISO/TC 229; OECD WPMN; ASTM E56; RCC NanoTech working group | RCC NanoTech dormant since 2019; GHS Rev. 9 nano provisions not yet transposed in either country |
No. Notification under the CEPA New Substances Notification Regulations is triggered only when a substance is absent from the Domestic Substances List and exceeds schedule volume thresholds. A nanoscale form of an already-listed substance is managed through Significant New Activity (SNAc) provisions or a section 71 information-gathering notice — mechanisms with a different trigger, a different timeline and a different legal obligation than full NSN notification.
Codified at 40 CFR 704.20, it requires US manufacturers and processors of discrete nanoscale forms of substances already on the TSCA Inventory to submit a one-time report to EPA: substance identity, production volume, methods of manufacture, exposure routes, and available hazard and toxicity data. It is a reporting obligation only and confers no authorisation to manufacture or market.
No. Neither Canada nor the United States operates a priority or expedited review track specifically for commercial nanomaterials. This is the clearest shared deficiency in the continental framework relative to the EU, where REACH and the Cosmetics Regulation provide derogation mechanisms for low-risk nano substances with established safety dossiers. The absence of an expedited pathway is driving some first-to-market filings toward EU jurisdictions.
Not in either country. NIOSH’s recommended exposure limit of 1 µg/m³ (respirable fraction, 8-hour TWA) for carbon nanotubes and nanofibres is advisory, and no Canadian province has issued a nano-specific binding limit. In practice the NIOSH REL functions as the de facto standard of care demanded by insurers and prime contractors in both markets, but provides no regulatory safe harbour for compliance purposes.
The International Traffic in Arms Regulations (22 CFR 120–130) apply to any US-origin defence article regardless of where it is subsequently processed or integrated. A Canadian manufacturer who incorporates a US-origin ITAR-controlled nano-material — a nano-energetic formulation, a controlled CNT composite structural part, a nano-enabled sensor — into a Canadian defence product must obtain US State Department re-export authorisation before transferring the end-item to any third party, including NATO partner nations. This extraterritorial obligation has no equivalent in the Canadian EIPA framework and is a persistent friction point in DND procurement programmes.
This document is a working reference for strategic and procurement planning purposes. It reflects the regulatory framework as understood at August 2026 and is not a substitute for legal advice. Regulatory requirements change; instruments cited should be verified against current official sources (Canada Gazette, US Federal Register, ECCC and EPA websites) before any compliance decision is made. Nothing in this document constitutes legal, environmental, occupational-health or procurement advice.