At a glance
| Chemical family | Simple aromatic — hydroxybenzene (carbolic acid) |
| CAS number | 108-95-2 |
| Classification | IARC Group 3 (not classifiable as to carcinogenicity, Monographs Vol. 47, 1989; Vol. 71, 1999). Corrosive at high concentrations. Irritant to skin, eyes, and respiratory tract |
| Where you encounter it | Phenol-formaldehyde resins (plywood, particleboard, insulation); tobacco smoke; disinfectants and cleaners; metabolite of benzene; indoor air (common VOC) |
| Sleep micro-environment relevance | Emitted from composite wood furniture (bed frames, nightstands, dressers) and building materials (subflooring, wall panels) in the bedroom. Common indoor air VOC. Concentrations highest in new construction or after renovation |
Regulatory & certification status
| European Union | REACH registered. CLP Acute Tox. 3 (H301, H311, H331), Skin Corr. 1B (H314), STOT RE 2. No specific indoor air quality limit in EU regulations. Regulatory |
| United States | EPA Clean Air Act hazardous air pollutant (HAP). OSHA PEL: 5 ppm (TWA). NIOSH REL: 5 ppm (TWA), 15.6 ppm (STEL). No residential indoor air standard. Regulatory |
| Canada | CEPA-assessed substance. Health Canada residential indoor air quality guideline: 0.05 ppm (short-term). Regulatory |
| International | IARC Group 3 (Monographs Vol. 47/71). WHO indoor air guideline: 0.1 mg/m3 (30-minute average). Regulatory |
What it is
Phenol is the simplest aromatic alcohol — a benzene ring with a hydroxyl group. It was first isolated from coal tar in 1834 and used as a disinfectant (carbolic acid) by Joseph Lister in pioneering antiseptic surgery. Today, phenol is primarily used as a feedstock for phenol-formaldehyde resins (used in plywood and particleboard), bisphenol A (BPA), and other industrial chemicals. IARC evaluated phenol in 1989 and re-evaluated it in 1999, maintaining a Group 3 classification — the evidence for carcinogenicity was inadequate in both humans and animals. Phenol is an irritant at low concentrations and corrosive at high concentrations. It is readily absorbed through the skin. WHO has established an indoor air guideline of 0.1 mg/m3 for 30-minute average exposure.
Where it shows up in bedding
Phenol is not a bedding ingredient. It enters the bedroom through off-gassing from building materials and furniture containing phenol-formaldehyde (PF) resins: plywood bed frames, particleboard nightstands and dressers, laminate flooring, and mineral wool insulation in walls and ceilings. PF resins emit both formaldehyde and phenol, though formaldehyde receives more regulatory attention. Emission rates are highest when products are new and decrease over weeks to months. Tobacco smoke is another significant indoor source. During sleep, indoor air phenol contributes to the total VOC exposure through inhalation. Ventilation and product ageing are the main factors reducing bedroom phenol levels.
Citations
- IARC (1999). Re-evaluation of Some Organic Chemicals. Phenol. IARC Monographs Vol. 71. Source Peer-reviewed
- WHO (2010). WHO Guidelines for Indoor Air Quality: Selected Pollutants. Source Regulatory
- ATSDR (2008). Toxicological Profile for Phenol. Source Regulatory
Frequently asked questions
Does my particle board furniture emit phenol?
Yes. Furniture made from particleboard, plywood, or MDF bonded with phenol-formaldehyde (PF) resins emits phenol into room air. Emission rates are highest when products are new and decline over weeks to months. Ventilating the room and allowing new furniture to off-gas (ideally in a well-ventilated space before bringing into the bedroom) reduces exposure.
Is phenol a carcinogen?
IARC classifies phenol as Group 3 — not classifiable as to carcinogenicity. This means the available evidence does not support classification as a carcinogen. Phenol is an irritant and can cause skin burns at high concentrations, but cancer is not the primary concern at indoor air exposure levels.
Related compounds
Embr is a sleep environment company researching and addressing the chemistry of the bedroom. Research and product development in progress.
Last reviewed 2026-07-08. If you find a factual error, contact us.