Flame Retardants in Furniture: What's Actually in Your Sofa
Your sofa is one of the largest pieces of furniture in your home and one you spend significant time in contact with. If it was made with polyurethane foam — as most affordable sofas are — there is a good chance it contains flame retardant chemicals. Understanding what these are and how they behave changes the calculus when you next buy furniture.
The short answer
Polyurethane foam is highly flammable. Furniture manufacturers have historically treated it with flame retardant chemicals to meet flammability standards. The original compounds — polybrominated diphenyl ethers (PBDEs) — were phased out globally after evidence of bioaccumulation, hormonal disruption, and neurodevelopmental effects. They were replaced primarily with organophosphate flame retardants (OPFRs) including TCPP and TDCPP, which accumulate in household dust and are detected in human blood and breast milk. The research on OPFRs is less mature than PBDEs but raises similar concerns. Natural alternatives — wool batting, natural latex, cotton fill — meet fire safety standards without chemical treatment.
Why flame retardants are in furniture
Polyurethane foam is essentially solidified petroleum. It ignites easily and burns intensely. In the United States, California's Technical Bulletin 117 (TB 117) for decades required that furniture foam resist open flame ignition — a standard that drove widespread flame retardant use across the US market and, through US-manufactured imports, into other markets including Australia.
TB 117 was updated in 2014 (TB 117-2013) to shift the test from open flame to smoulder resistance, which natural fibres pass without chemical treatment. However, the change came after decades during which the global furniture supply chain was saturated with flame-retardant foam.
Australia's furniture flammability standards (AS/NZS 3744) differ from California's earlier standard — Australian sofas are not all treated with flame retardants. But imported furniture, particularly from US or Chinese manufacturers building to US-market specifications, commonly contains them.
The PBDE phase-out and what replaced them
Polybrominated diphenyl ethers (PBDEs) were the dominant flame retardants in furniture foam from the 1970s through to the 2000s. Research found they accumulated in human tissue and breast milk, with blood levels in North Americans among the highest in the world. Studies linked them to neurodevelopmental effects in children and thyroid disruption. They were progressively restricted internationally; penta-BDE and octa-BDE were added to the Stockholm Convention and phased out of production in most countries by 2009–2013.
The replacement compounds were primarily organophosphate flame retardants (OPFRs). TCPP (tris(1-chloro-2-propyl) phosphate) and TDCPP (tris(1,3-dichloro-2-propyl) phosphate) are now among the most widely detected man-made chemicals in household dust. TDCPP in particular has been classified as a carcinogen by the US National Toxicology Program. Both have been detected in human blood and breast milk. The pattern — replace one class of persistent industrial chemical with a similar-but-different class — has been described by researchers as a "regrettable substitution."
How exposure happens
Flame retardants in foam do not stay put. They are not chemically bonded to the foam matrix (they are additive, not reactive) so they migrate out of the foam over time and accumulate in household dust. House dust is the primary exposure pathway — particularly for young children who spend time on floors, put hands in mouths, and have higher inhalation rates relative to body weight.
Studies in homes with older foam-filled furniture consistently find higher levels of OPFRs in dust samples. The highest concentrations are typically on and around sofas and in rooms where the foam is most directly accessible (e.g. under cushion covers that have worn thin).
How to identify lower-risk furniture
There is no simple mandatory label on furniture indicating flame retardant presence or absence in the Australian market. Strategies for identifying lower-risk options:
- Ask the manufacturer directly: Ask "does this furniture contain added flame retardants in the foam?" Reputable manufacturers will have this information. The answer should be in writing.
- Look for furniture certifications: Greenguard Gold certification tests for chemical emissions including flame retardants. CertiPUR-US (US foam certification) requires foam to be made without PBDEs, TDCPP, TCPP, and several other retardants — look for this on the product tag.
- Choose natural fill materials: Furniture filled with wool batting, natural latex, or cotton does not require chemical flame retardants to meet current flammability standards. These materials have inherent flame-resistance properties. Look for "100% natural latex," "wool fill," or "cotton batting" in product descriptions.
- Solid wood frames: Solid hardwood frames without particleboard components eliminate the formaldehyde concern while also typically being associated with higher-quality, more durable construction.
What about existing furniture?
If you already own sofas or chairs with polyurethane foam and are concerned about flame retardant exposure:
- Keep foam covered — intact fabric covers significantly reduce fibre migration into dust
- Vacuum regularly with a HEPA filter vacuum to reduce dust accumulation, particularly on and around upholstered surfaces
- Increase ventilation in main living areas
- Wash hands before eating, particularly for young children who have been playing on carpeted areas
When the furniture needs replacing, prioritise the bedroom first — the mattress and bed frame have the highest daily contact exposure.