Like most chemicals, very high concentrations of formaldehyde can be toxic. However its natural presence in our bodies at low levels means that we have the right metabolic processes to ensure that it is broken down quickly and does not build up in the body.
In March 2012, formacare and the European Panel Federation (EPF) commissioned an independent study to TNO Triskelion and Risk & Policy Analysts Limited (RPA) to assess the safety of formaldehyde at the workplace and in homes.
The Risk Assessment, based on recent workplace exposure measurements in the EU, showed safe use for worker exposure for the manufacture and major uses of formaldehyde, compared to an occupational exposure limit of 0.4 ppm. For workers in some industries, particular tasks require the use of risk management measures, such as half masks, to meet safe levels.
Likewise, today’s indoor levels of formaldehyde in houses are shown to be safe, based on studies with large numbers of measurements in real homes in the EU over the past 20 years. Formaldehyde concentrations in homes are well below the safe level of 0.1 mg/m3 recommended by the WHO.”
More information can be found here.