Substances

Wood dust

Also called sawdust, hardwood dust, softwood dust, MDF dust.

Not a labelled product but a substance hazardous to health created by work. Hardwood dust and mixed wood dust are carcinogens under COSHH, and all wood dust can cause occupational asthma and dermatitis. Exposure must be reduced as low as is reasonably practicable, not just below the limit.

Last reviewed 8 September 2026

Hazard data from HSE EH40 and HSE guidance, checked 8 September 2026. Confirm the concentration and form against the supplier data sheet for the product you use.

Identification

Physical formdust
Signal wordNone
PictogramsNone
Routes of exposureinhalation, skin, eyes

Hazard classification

    Hazard statements

      Workplace exposure limit

      Reference periodppmmg/m³
      Long term (8 hour TWA)3

      Hardwood dust, and any mixture containing hardwood, inhalable. Pure softwood dust is 5 mg/m³. Both carry a sensitiser notation (Sen); hardwood also carries Carc.

      Carries a sensitiser notation (Sen). It can cause occupational asthma or dermatitis, so exposure must be reduced as low as is reasonably practicable, not just below the limit.

      Carries a carcinogen notation (Carc) in EH40. Exposure must be reduced as low as is reasonably practicable and the stricter COSHH duties for carcinogens apply.

      COSHH status

      Hardwood dust is listed as a carcinogen in EH40 Table 1. HSE requires local exhaust ventilation on woodworking machines and RPE for dusty tasks such as sanding and cleaning up. Do not dry sweep.

      Common uses

      • Sawing, sanding and routing timber
      • Cutting MDF and chipboard
      • Cleaning up in workshops

      First aid

      Inhaled: fresh air. Eyes: rinse with water. Skin: wash. See a doctor about persistent breathing or skin problems.

      In an emergency call 999. For advice call NHS 111. Always follow section 4 of the safety data sheet for the product you have.

      Storage

      Not applicable. Collect dust in extraction bags and dispose of as waste.

      Sources

      We do not host or copy manufacturer safety data sheets. Ask your supplier for the current sheet for the product you use.