Understanding Canada’s Phosphorus Limits for Cleaning Products

Phosphorus can serve useful functions in cleaning formulations, but when released into the environment in excessive quantities, nutrients such as phosphorus can contribute to environmental concerns. In Canada, the concentration of phosphorus in certain cleaning products is regulated under the Concentration of Phosphorus in Certain Cleaning Products Regulations (SOR/89-501) under the Canadian Environmental Protection Act, 1999 (CEPA). The Regulations prescribe phosphorus and its compounds as nutrients and establish limits for several categories of cleaning products.  

For manufacturers and importers of cleaning products sold in Canada, understanding whether a product falls within the scope of these Regulations is an important part of assessing regulatory compliance. 
 

Which Cleaning Products Are Covered? 

The Regulations establish phosphorus concentration limits for: 

• household laundry detergents; 

• commercial and industrial laundry detergents; 

• household dish-washing compounds; and 

• household cleaners, subject to certain exclusions.  

For household cleaners, the Regulations specifically exclude laundry detergents, dish-washing compounds, metal cleaners and de-greasing compounds from the household-cleaner provision. Laundry detergents and dish-washing compounds are addressed separately within the Regulations.  

This distinction is important when evaluating a product because the applicable phosphorus limit depends on the type and intended use of the cleaning product. 

What Are the Phosphorus Limits? 

For most regulated household cleaning products, the maximum permitted phosphorus concentration is: 

1.1% by weight expressed as phosphorus pentoxide (P₂O₅), or 0.5% by weight expressed as elemental phosphorus.  

This limit applies to: 

• household laundry detergents; 

• household dish-washing compounds; and 

• household cleaners covered by section 6 of the Regulations.  

Commercial and industrial laundry detergents have a different limit. Their phosphorus concentration must not exceed: 

5% by weight expressed as phosphorus pentoxide (P₂O₅), or 2.2% by weight expressed as elemental phosphorus.  

This makes correct product categorization particularly important. A household laundry detergent, for example, is subject to a different phosphorus limit than a commercial or industrial laundry detergent. 
 

What About Laboratory Testing? 

The Regulations also establish requirements for analyses used to determine phosphorus concentration. 

Any analysis performed for the purposes of the Regulations must be conducted by a laboratory that meets the specified accreditation requirements. The laboratory must be accredited under ISO/IEC 17025 by an accrediting body that is a signatory to the International Laboratory Accreditation Cooperation Mutual Recognition Arrangement, or accredited under Quebec’s Environment Quality Act. In addition, the laboratory’s scope of accreditation must include the analysis being performed to determine phosphorus concentration.  

For companies obtaining analytical reports to demonstrate compliance, this means that the laboratory’s accreditation and scope are important considerations alongside the test result itself. 

Don’t Forget the Record-Keeping Requirements 

The Regulations include record-keeping requirements for persons who manufacture for use or sale in Canada, or import, covered cleaning products containing phosphorus.  

Depending on whether the product is manufactured or imported, required information can include items such as: 

• product brand name; 

• manufacturer or importer information; 

• quantities shipped from manufacturing plants and recipient information, where applicable; and 

• for imported products, information such as the port of entry, sender, date of import, Harmonized System number and importer number.  

These records must be retained for five years after the day on which they are made and kept in Canada in accordance with the Regulations.  

Does the Regulation Apply to Your Product? 

Determining applicability may not always be as straightforward as checking the phosphorus concentration on a formulation. 

The first step is establishing how the product is categorized and whether it falls within one of the product types addressed by the Regulations. Intended use can therefore be an important consideration when assessing a cleaning product. 

For manufacturers and importers, a compliance review may involve: 

1. determining whether the cleaning product falls within the scope of the Regulations; 
2. identifying the applicable phosphorus concentration limit; 
3. reviewing available formulation or analytical information; and 
4. where analysis is required for the purposes of the Regulations, ensuring the laboratory meets the applicable accreditation requirements. 

The official requirements should always be verified against the current Concentration of Phosphorus in Certain Cleaning Products Regulations. The Justice Laws website currently identifies the Regulations as current to September 30, 2026 and last amended April 8, 2019.  

How Dell Tech Can Help 

Navigating Canadian requirements for cleaning products often involves more than simply reviewing an ingredient list. Product type, intended use, formulation and supporting documentation can all be relevant when assessing which regulatory requirements apply. 

Dell Tech can assist manufacturers and importers with reviewing cleaning products against applicable Canadian regulatory requirements and identifying testing or documentation needs. 

If you’re unsure whether Canada’s phosphorus concentration requirements apply to your cleaning product, contact Dell Tech to discuss your product and regulatory needs.