Exporting silica sand to Canada is not simply a matter of preparing an invoice and certificate of analysis. The dossier should connect three separate subjects: WHMIS compliance if the product is hazardous, technical lot documentation and Canadian customs requirements.
For a foreign supplier, the central practical point is to work with the Canadian importer early. In Canada, the person or business importing a hazardous product intended for use, handling or storage in a workplace falls within federal hazard-communication requirements.
1. WHMIS: who carries responsibility in Canada?
WHMIS is Canada’s Workplace Hazardous Materials Information System.
The Hazardous Products Act and Hazardous Products Regulations impose obligations on suppliers of hazardous products intended for Canadian workplaces.
Health Canada explains that a supplier can include a person who sells or imports a hazardous product. For goods coming from a foreign supplier, the Canadian importer therefore becomes a central party in the compliance dossier.
The Moroccan exporter should provide the necessary technical data, but its commercial role should not be confused with the legal obligations that apply to the supplier/importer in Canada.
2. Quartz silica: why hazard classification needs serious treatment
Health Canada publishes an official assessment of quartz silica, CAS 14808-60-7.
In that assessment, quartz silica is classified as:
- Carcinogenicity - Category 1A;
- Specific Target Organ Toxicity - Repeated Exposure - Category 1.
This classification concerns quartz silica as a substance under the Hazardous Products Regulations.
It does not mean that a commercial product should be classified without analysis.
Silica sand can be a natural substance or mixture containing quartz and other constituents. Classification of the product placed on the market should be determined from its composition, form, applicable criteria and available data.
It is also important to separate bulk composition, presence of crystalline silica, the ability to generate a respirable fraction and the worker’s actual airborne exposure. These concepts are related, but they are not interchangeable.
3. Canadian SDS: 16 headings and two languages
For a hazardous product, the Hazardous Products Regulations require a compliant safety data sheet.
Health Canada notes that the SDS follows the 16 headings required by the regulations.
SDS information elements must be available in English and French. They can appear in one bilingual document or in two unilingual parts that together constitute the bilingual SDS.
Health Canada guidance does not present a simple website link as a sufficient substitute for actually providing the SDS to the purchaser.
4. The label also needs to be prepared for the Canadian market
Where WHMIS labelling applies, the required label information elements must also be provided in both official languages.
Health Canada also explains that, for a commercial import intended for resale or distribution, the initial supplier identifier on the SDS and label must be handled according to the role of the Canadian supplier/importer.
There are specific provisions for importers bringing a hazardous product into Canada only for use in their own workplace. Those provisions should not be generalized to every commercial-sales scenario.
For an exporter, the practical rule is simple: have the Canadian importer validate the Canadian SDS and label before shipment.
5. The 2022–2025 transition period is over
Amendments to the Hazardous Products Regulations came into force in December 2022.
Health Canada provided a three-year transition period, which ended on December 14, 2025.
Since December 15, 2025, hazardous products must use classifications, SDSs and labels that comply fully with the amended regulations.
6. Crystalline silica: do not confuse product hazard with occupational exposure limits
An SDS communicates product hazards. An occupational exposure limit concerns the concentration of an airborne agent to which workers may be exposed.
Canada combines federal, provincial and territorial occupational health and safety jurisdictions. For federally regulated workplaces, current federal rules refer to ACGIH values for many airborne chemical agents; other jurisdictions may apply different values.
It is therefore misleading to state that there is one single “Canadian silica limit” that applies to every workplace and every product.
7. Customs: 2505.10 is commonly used for natural silica sand
Canada’s 2026 Customs Tariff places under heading 25.05 natural sands of all kinds, excluding metal-bearing sands of Chapter 26.
Tariff item 2505.10.00 covers silica sands and quartz sands.
The tariff further distinguishes:
- 2505.10.00.10: sands of a kind used in foundries;
- 2505.10.00.30: fracturing sand;
- 2505.10.00.90: other.
The T2026-2 version, effective September 1, 2026, shows an MFN rate of Free for 2505.10.00.
Classification still has to match the actual goods. Quartz that is not presented as natural sand follows a different tariff logic, for example 2506.10.00 for quartz other than natural sands.
8. Morocco: tariff treatment and origin
Canada’s 2026 list of countries and applicable tariff treatments shows Morocco as eligible for MFN and GPT - General Preferential Tariff treatment.
For natural silica sand currently classified under 2505.10.00, the MFN tariff shown is already “Free”.
This does not remove the importer’s obligation to declare origin, tariff classification, value for duty, quantity, any applicable taxes and other regulatory measures correctly.
9. CARM and the importer’s role
The CBSA uses CARM - CBSA Assessment and Revenue Management to manage accounts and obligations for many commercial importers.
The current CBSA guide indicates that a commercial importer needs, among other things, a CARM account, a business number and an import program account, and must declare classification, value and origin correctly.
The foreign supplier should therefore know who will act as Importer of Record before shipping.
10. What should a silica-sand supplier dossier contain?
| Document / data | Purpose |
|---|---|
| Technical data sheet | Describes the product and industrial use |
| Lot certificate of analysis | Links the shipment to contractual chemistry |
| Particle-size distribution | Confirms suitability for the application |
| Moisture | Supports consistent lot comparison |
| Mineralogy when needed | Distinguishes quartz from other phases |
| Compliant SDS when applicable | Communicates hazards under WHMIS |
| Compliant label when applicable | Accompanies the hazardous product |
| Commercial invoice | Supports customs entry |
| Country of origin | Required for declaration |
| Proposed tariff code | Working basis to be confirmed by importer or broker |
The certificate should be linked to an identifiable lot.
11. What the exporter should send before the first shipment
Before loading, it is useful to exchange with the Canadian importer:
- precise product description;
- intended use;
- chemical composition;
- quartz content or mineralogy when available;
- particle-size distribution;
- moisture;
- lot certificate;
- current SDS;
- validated bilingual version when WHMIS requires it;
- proposed tariff classification;
- origin;
- packaging, net weight and gross weight;
- pro forma or commercial invoice;
- supplier and importer contact details.
12. Three common mistakes to avoid
Confusing “high SiO₂” with “non-hazardous”
Chemical purity does not remove the issues associated with crystalline quartz and respirable dust.
Copying an EU or U.S. SDS without a Canadian review
The overall structure may look familiar, but supplier/importer responsibilities, languages and regulatory requirements should be checked for Canada.
Using 2505.10 without checking product form
Natural sand, crushed quartz and processed powder may require different classification analysis.
Conclusion
The best way to export silica sand to Canada is to build one dossier connecting technical data, WHMIS and customs.
In 2026, the transition period under the Hazardous Products Regulations is over. The current tariff places natural silica sands under 2505.10.00 with an MFN rate shown as Free, but the exact nature of the product remains decisive.