Dechlorane Plus (DP) Free Mattresses: How to Verify Before You Buy

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What Is Dechlorane Plus?

Dechlorane Plus is a chlorinated flame retardant chemical that has been manufactured since the 1960s. It belongs to a family of compounds originally developed as a replacement for an earlier flame retardant called Mirex, which was banned in the 1970s due to its environmental persistence and toxicity.

DP is used primarily in electrical wire coatings, plastic housings for electronics, and some textile applications. Its flame-retardant properties come from the high chlorine content in its molecular structure, which interferes with the combustion process.

The chemical's persistence is the core concern. Like other chlorinated compounds, DP does not break down readily in the environment. It accumulates in fatty tissues of animals and humans, and concentrations increase as it moves up the food chain.

How DP Ends Up in Mattresses

Here is where things get nuanced. Most mattress manufacturers in Canada and the United States do not intentionally add Dechlorane Plus to their products. However, DP can appear in mattresses through indirect routes:

Imported Foam Components

Some polyurethane foams manufactured overseas may contain flame retardant additives including DP. When Canadian mattress companies import foam components from facilities with less stringent chemical regulations, trace amounts of DP can be present even though it was not specified in the product design.

Textile Treatments

Certain flame-retardant textile treatments applied to mattress ticking (the outer fabric) may include chlorinated compounds. While DP is not the most common choice for textiles, it has been identified in some treated fabrics.

Electronic Components

Adjustable bed bases with electronic controls and wiring may contain DP in the wire insulation and circuit board coatings. While this is separate from the mattress itself, it is part of the sleep system.

Health and Environmental Concerns

Research on Dechlorane Plus health effects is less extensive than for some older flame retardants, but what exists raises reasonable concerns:

• Bioaccumulation: DP accumulates in human fatty tissue and has been detected in blood and breast milk samples
• Endocrine disruption: Early research suggests potential thyroid hormone effects, though evidence is still developing
• Environmental persistence: DP does not degrade under normal environmental conditions, earning it consideration as a persistent organic pollutant
• Transfer to dust: Products containing DP shed particles into household dust, creating an inhalation and ingestion exposure pathway

Canadian Regulatory Status

Canada has been evaluating Dechlorane Plus under the Canadian Environmental Protection Act (CEPA).

• In 2019, Environment and Climate Change Canada published a draft screening assessment concluding that DP meets criteria for persistence and bioaccumulation
• DP was proposed for addition to the Stockholm Convention on Persistent Organic Pollutants, reflecting international concern
• Canada has supported international efforts to restrict DP, consistent with its approach to other persistent organic pollutants
• Specific restrictions on DP in consumer products are anticipated but not yet in force as of early 2026

The regulatory direction is clear: DP will likely face increasing restrictions in Canada. Choosing DP-free products now aligns with where regulations are heading.

How to Verify a DP-Free Mattress

Look for These Indicators

Questions to Ask

When shopping for a DP-free mattress, these questions help:

1. "How does this mattress meet flammability standards? Chemical treatment or physical barrier?"
2. "Where is the foam manufactured?"
3. "Does the manufacturer have a flame retardant chemical policy?"
4. "What certifications does the foam carry?"

The first question is the most important. A mattress that meets flammability standards through a fire barrier sock (a knitted fabric made of silica-infused rayon that smothers flames) does not need chemical flame retardants at all, making the DP question irrelevant for that product.

What We Carry in Brantford

At Mattress Miracle, our approach to chemical flame retardants is straightforward: we prefer brands that use physical fire barriers rather than chemical treatments.

Our Restonic collection uses CertiPUR-US certified foams, and the Sleep In collection (Canadian-made, flippable mattresses) uses domestic foam production with established quality controls.

Brad often explains it simply: "The cleanest mattress is one that does not need chemical fire retardants because it uses a physical barrier instead. That is the direction the entire industry is moving, and the brands we carry are already there."

If you have specific chemical sensitivity concerns, we are happy to request detailed information from our manufacturers about any particular product in our showroom. Since 1997, we have maintained close relationships with our suppliers, which means we can ask questions that a large chain retailer cannot.