WOOD DUST, SOFT WOOD | Occupational Safety and Health Administration

WOOD DUST, SOFT WOOD†

Chemical Identification
Chemical Identification
CAS #	NO CAS
Formula
Synonyms	soft wood dust

Physical Properties
Physical Properties
Physical description	Tan fibrous powder.
Boiling point		Molecular weight	varies
Freezing point/melting point		Vapor pressure	0 mmHg (approx)
Flash point		Vapor density
Specific gravity	0.56	Ionization potential
Lower explosive limit (LEL)	40 g/m³	Upper explosive limit (UEL)
NFPA health rating		NFPA fire rating
NFPA reactivity rating		NFPA special instruction
Vapor hazard ratio (VHR)
Historical exceedance percentage
Target organs

Monitoring Methods Used by OSHA
Monitoring Methods Used by OSHA
Analyte code (IMIS no.)	9211
Sampling group
Sampler/Sampling media	Tared low-ash 37 mm PVC filter, 5 microns [SLTC108]
Sampling time^*	240-480 min
Sampling volume (TWA)^*	960 L
Sampling flow rate (TWA)^*	2 L/min
Sampling volume (STEL/Peak/C)^*	408-960 L
Sampling flow rate (STEL/Peak/C)^*	2 L/min
Analytical method instruments	Gravimetric
Method reference	OSHA PV2121 (partially validated)
Notes	If the net weight of the sample yields a concentration below the PEL after considering the associated SAE , the SLTC will perform no further work on the sample and the sample air concentration will be reported as the calculated gravimetric air concentration. If the net weight corresponds to an amount greater than the PEL value after considering the associated SAE, the sample may be analyzed for the applicable component and appropriate results will be reported.
Special requirements	FOR TOTAL DUST SAMPLES, DO NOT USE A CYCLONE!!

^* All sampling instructions above are recommended guidelines for OSHA Compliance Safety and Health Officers (CSHOs), please see the corresponding OSHA method reference for complete details.

Wipe Method
Wipe Method
Sampler/Sampling media

Bulk Method
Bulk Method

On-Site Screening Techniques
On-Site Screening Techniques
Device
Model/Type
Sampling information (see manufacturer instructions)

Exposure Limits
Exposure Limits
OSHA PEL 8-hour TWA (ST) STEL (C) Ceiling Peak		NIOSH REL Up to 10-hour TWA (ST) STEL (C) Ceiling		ACGIH TLV© 8-hour TWA (ST) STEL (C) Ceiling		CAL/OSHA PEL 8-hour TWA (ST) STEL (C) Ceiling Peak
PEL-TWA	15 mg/m³ (total dust), 5 mg/m³ (respirable dust)	REL-TWA	1 mg/m³	TLV-TWA	Western red cedar: 0.5 mg/m³ (inhalable fraction), All other species: 1 mg/m³ (inhalable fraction) [2014]	PEL-TWA	All soft and hardwoods, except Western red cedar: 2 mg/m³. Western red cedar: 0.5 mg/m³.
PEL-STEL		REL-STEL		TLV-STEL		PEL-STEL	5 mg/m³ (all soft and hardwoods, except Western red cedar)
PEL-C		REL-C		TLV-C		PEL-C
Skin notation	N	Skin notation	N	Skin notation	N	Skin notation	N
Notes: See 29 CFR 1910.1000 Table Z-1 (PNOR) and 29 CFR 1910.1000 Table Z-3, Mineral Dusts (Inert or Nuisance Dust). OSHA Construction and Maritime Industry PEL for PNOR (total dust, organic and inorganic): 15 mg/m³ as an 8-hrTWA. See 29 CFR 1926.55 Appendix A and 29 CFR 1915.1000 Table Z-Shipyards.		Notes: CARCINOGEN (Ca): REDUCE EXPOSURE TO LOWEST FEASIBLE CONCENTRATION. See Appendix A, NIOSH Potential Occupational Carcinogens.		Notes: Western red cedar: dermal senzitization (DSEN), respiratory sensitization (RSEN)		Notes:
Health factors: See NIH-NLM PubChem.		IDLH
Carcinogenic classifications: NIOSH-Ca; TLV-A1 (oak and beech), TLV-A2 (birch, mahogany, teak, walnut), TLV-A4 (all other wood dusts, including Western red cedar); NTP-K; MAK-1; IARC-1		Notes: Ca

AIHA emergency response planning guidelines - ERPG-1/ERPG-2/ERPG-3:

Additional Resources and Literature References
Additional Resources and Literature References
NOAA: CAMEO Chemicals - Wood dust NIOSH: Pocket Guide to Chemical Hazards - Wood dust Literature References ACGIH: Documentation of the Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) - Wood dusts. See annual publication for most recent information. No Authors: Wood Dust . Report on Carcinogens (latest edition); U.S. Department of Health and Human Services, Public Health Service, National Toxicology Program. No Authors: Wood Dust and Formaldehyde. IARC Monogr. Eval. Carcinog. Risks Hum. 62: 35-194.

Last Updated Date : 01/14/2021