The Naked Truth Project
The product Finishes / Sealers (for floors & furniture) is in the following categories:
Home Decor
Finishes / Sealers (for Floors & Furniture)
CHEMICALS CONTAINED:
Conventional finishes and sealers contain polyurethane and other potentially toxic compounds that can give off volatile organic chemicals (VOCs); organic chemicals that are easily released to the air at room temperature. VOCs and other chemicals in sealers and finishes are released when the products are applied and as they cure (which can take days, weeks, or months). Smaller amounts continue to be released over time.

Some chemicals that may be found in these products include acetone, methanol, pentachlorophenol, phthalates, heavy metals, and formaldehyde, to name just a few. Polyurethane also contains and releases isocyanates and diisocyanates, including but not limited to toluene diisocyanate (TDI). These are collectively referred to as NCO.
HEALTH CONCERNS:
VOCs can cause irritation to the eyes, nose, throat, respiratory tract, lungs, as well as more serious effects. The chemicals found in finishes and sealers can cause headaches and more serious neurological effects, and organ and tissue damage.

Isocyanates and diisocyanates (NCO) can cause mild to severe respiratory problems, including disruption of lung function, aggravation/triggering of asthma, dermatitis, and chemical sensitivation. These chemicals have been established as the cause of occupational health problems and diseases for years, but exposure from consumer products has been considered minimal to nonexistent.

More recent research questions this assumption and has indicated that people may be exposed to levels of NCO from the wide variety of consumer products that polyurethane is found in (hard and soft foams, plastics, finishes and sealers, adhesives) that can cause health effects—including asthma, elevated immune response, other respiratory problems, and dermatitis.

TDI is specifically classified as a Group B possible human carcinogen by the International Agency for Research on Cancer (IARC).
TIPS & ALTERNATIVES:
Look for sealers and finishes made from plant-based materials, such as wood oils and waxes.

Avoid products containing polyurethane.

Some companies are coming out with synthetic finishes that are low in VOCs and other toxics. These products are effective AND less toxic.

No matter what type of finish you choose, make sure that your work area is well-ventilated (not just open windows—use fans and respirators).
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