Label abbreviations descriptions

WOOD DUST†

Chemical Identification
CAS # NO CAS
Formula

No formula
Synonyms

beech; birch; mahogany; maple; oak; sapele; walnut - hardwoods, redwood; teak - softwoods; western red cedar

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
Analyte code (IMIS no.) W103 (All hard and soft woods, except Western Red Cedar), W102 (Western Red Cedar)
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.

Bulk/Wipe Method
Wipe Sampler/Sampling media
Bulk Method

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

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 Table 1 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

Last Updated Date : 06/23/2023