Volatile organic compound

Phenol in the bedroom

By — 19-year firefighter and entrepreneur. Published July 2026.

Phenol (carbolic acid) is a simple aromatic compound and one of the most common indoor air VOCs. IARC classifies it as Group 3 (not classifiable as to carcinogenicity to humans, Monographs Vol. 47, 1989; re-evaluated Vol. 71, 1999). Phenol is emitted from phenol-formaldehyde resins used in plywood, particleboard, mineral wool insulation, and other building materials. It is also present in tobacco smoke, household cleaners, and as a metabolic product of benzene. In the bedroom, phenol is primarily an off-gassing product from composite wood furniture and building materials.

Phenol — Embr Bedroom Chemistry Atlas

At a glance

Chemical familySimple aromatic — hydroxybenzene (carbolic acid)
CAS number108-95-2
ClassificationIARC 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 itPhenol-formaldehyde resins (plywood, particleboard, insulation); tobacco smoke; disinfectants and cleaners; metabolite of benzene; indoor air (common VOC)
Sleep micro-environment relevanceEmitted 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 UnionREACH 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 StatesEPA 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
CanadaCEPA-assessed substance. Health Canada residential indoor air quality guideline: 0.05 ppm (short-term). Regulatory
InternationalIARC 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.

The Embr Exposure Ledger: Phenol

One chemical, several public questions, answered from independent datasets and joined here — the environment it shows up in, the body burden it carries, how it is regulated, and what actually reduces it.

This compound appears in 7 of the Embr Exposure Ledger’s 10 exposure datasets.
Is it in smoke?
Measured in the emissions of cigarette smoke, prescribed fire, residential wood smoke and wildfire. This is what the source gives off, not a level in anyone's home: it says the compound is present in that smoke, not how much of it reaches a person. What smoke leaves behind indoors.Source: US EPA, SPECIATE 5.4 — the EPA repository of source-emission composition profiles (air toxics, criteria and greenhouse pollutants)
At what level would it matter?
Published benchmarks exist: an inhalation reference concentration of 0.2 mg/m³ (Cal EPA) and a residential indoor-air screening level of 210 µg/m³, set on a non-cancer endpoint (hazard quotient of 1). A screening level is the concentration at which EPA would look further, not a boundary between safe and harmful. The ledger holds no measured sleeping-environment concentration for this compound, so there is nothing here to compare the benchmark against — it tells you what would matter, not what is in any room.Source: US EPA, Regional Screening Levels (RSL) Summary Table — consolidated toxicity values from IRIS, PPRTV, ATSDR, Cal EPA and OPP
Who releases it?
421 US facilities reported releasing it in 2024 across 45 states and territories; 439 Canadian facilities have reported it (1993-2024). These are self-reported quantities leaving a facility, not levels anyone encountered, and the two national programs are not added together — they use different reporting thresholds.Source: US EPA, Toxics Release Inventory (TRI) Basic Data File, 2024 reporting year; Environment and Climate Change Canada, National Pollutant Release Inventory (NPRI), releases 1993-present
Is it in me?
Measured in the U.S. population Urine (2 (2009–2011)): geometric mean 6.6 µg/L; 95th percentile 34 µg/L.Source: Statistics Canada / Health Canada, Canadian Health Measures Survey (CHMS) human biomonitoring of environmental chemicals
Does the law flag it?
Carries an EU-wide binding classification as mutagenic (category 2). That classifies the substance itself; it does not restrict any product.Source: California OEHHA Prop 65 listSource: EU CLP Annex VI
Has a regulator acted?
Regulators have acted on products over this compound: 21 EU safety alerts. These are actions against specific products, not a measure of the substance in general — and counts follow enforcement attention as much as they follow prevalence.Source: EU Safety Gate (RAPEX), European Commission rapid alert system for dangerous non-food products

Detection and body-burden figures are occurrence data, not a personal measurement or a health diagnosis. Part of the Embr Exposure Ledger — an open, cross-dataset chemical join (download the data), reusable with attribution.

Citations

  1. IARC (1999). Re-evaluation of Some Organic Chemicals. Phenol. IARC Monographs Vol. 71. Source Regulatory
  2. WHO (2010). WHO Guidelines for Indoor Air Quality: Selected Pollutants. Source Regulatory
  3. 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

  • Formaldehyde — co-emitted from phenol-formaldehyde resins
  • Toluene — another indoor air aromatic VOC
  • Benzene — phenol is a metabolite of benzene
  • Styrene — another aromatic VOC from building materials

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.