Agent Name

Western red cedar, dust

Major Category

Biological Agents

Synonyms

Thuja plicata

Category

Wood Dusts & Extracts

Comments

Occupational asthma reported in a carpenter, cabinet maker, and sawmill worker; [Malo] Allergic contact dermatitis and asthma have been reported. [ILO Encyclo: Woodworking Processes, Table 1] "TLV Basis" is asthma for Western red cedar. Workers had significant declines in lung function when exposed to 0.3 mg/m3, but not when exposed to 0.13 mg/m3 total dust. Prevalence of asthma increased from 5% to 15% in workers exposed to <1 mg/m3 versus >2 mg/m3 total dust. [ACGIH] See "Wood dust, all soft and hard woods."

Exposure Assessment
Skin Designation (ACGIH)

No

TLV (ACGIH)

0.5 mg/m3, inhalable partculate matter

Adverse Effects
Skin Sensitizer

Yes

Asthma

Yes

IARC Carcinogen

Known Carcinogen

NTP Carcinogen

Human Carcinogen

ACGIH Carcinogen

Not Classifiable

Links to Other NLM Databases
Toxicity Information

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Related Information in HazMap
Diseases

Occupational diseases associated with exposure to this agent:

Activities

Activities with risk of exposure: