Material Safety Data Sheet
Wood Dust (Not Preservative Treated)
Weyerhaeuser Company Emergency Phone: (253) 924-5000
PO Box 9777 Additional Information: (253) 924-3865
Federal Way, WA 98063-9777 CHEMTREC: (800) 424-9300
http://www.weyerhaeuser.com/environment/msds/default.asp Revised Date: June 16, 2005
1. Product Identification
Product Manufacturing Location(s)
Wood Dust (Not Preservative Treated) Various
Synonyms: Sawdust, Sanderdust
2. Hazardous Ingredients/Identity Information
Name CAS# Percent Agency Exposure Limits Comments
PEL-TWA 15 mg/m3
Wood Dust None NAP OSHA Total dust
PEL-TWA 5 mg/m3
(Not OSHA Respirable dust fraction
Preservative
TLV-TWA 0.5 mg/m3
Treated) ACGIH Inhalable, Western red cedar
TLV-TWA 1 mg/m3
ACGIH Inhalable, All other species
PEL-TWA 5 mg/m3
1
Recommended Softwood or hardwood total dust
1
PEL-STEL 10 mg/m3
Recommended Softwood or hardwood total dust
1
Recommended
PEL-TWA 2.5 mg/m3 Western red cedar total dust
1
In AFL-CIO v. OSHA 965 F. 2d 962 (11th Cir. 1992), the court overturned OSHA鈥檚 1989 Air Contaminants Rule, including the specific
3 3
PELs for wood dust that OSHA had established at that time. The 1989 PELs were: TWA 5 mg/m ; STEL (15 MIN) - 10 mg/m (ALL
3
SOFTWOODS AND HARDWOODS, EXCEPT WESTERN RED CEDAR); WESTERN RED CEDAR: TWA - 2.5 mg/m .
Wood dust is now officially regulated as an organic dust under the Particulates Not Otherwise Regulated (PNOR) or Inert or Nuisance
Dust categories at PELs noted under the Hazardous Ingredients section of this MSDS. However, A NUMBER OF STATES HAVE
INCORPORATED PROVISIONS OF THE 1989 STANDARD IN THEIR STATE PLANS. ADDITIONALLY, OSHA HAS ANNOUNCED
THAT IT MAY CITE COMPANIES UNDER THE OSH ACT GENERAL DUTY CLAUSE UNDER APPROPRIATE CIRCUMSTANCES FOR
NON-COMPLIANCE WITH THE 1989 PELs.
3. Hazard Identification
Appearance and Odor: Light to dark colored, granular solid. Color and odor are dependent on the wood
species and time since dust was generated. Particles generated by any manual or mechanical cutting or
abrasion process performed on wood.
Primary Health Hazards: The primary health hazard posed by this product is thought to be due to inhaling
wood dust.
Primary Route(s) of Exposure:
Ingestion:
鈱? Skin:
鈱? Inhalation:
鈱? Eye:
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3. Hazard Identification (cont鈥檇.)
Medical Conditions Generally Aggravated by Exposure: Wood dust may aggravate pre-existing
respiratory conditions or allergies.
Signs and Symptoms of Exposure:
Acute: Wood dust can cause eye irritation. Certain species of wood dust can elicit allergic contact dermatitis
in sensitized individuals. Wood dust may cause respiratory irritation, nasal dryness, coughing, sneezing,
wheezing as a result of inhalation.
Chronic: Wood dust, depending on the species, may cause allergic contact dermatitis and respiratory
sensitization with prolonged, repetitive contact or exposure to elevated dust levels. Prolonged exposure to
wood dust has been reported by some observers to be associated with nasal cancer.
Carcinogenicity Listing:
鈱? NTP: Wood dust, Known Human Carcinogen
鈱? IARC Monographs: Wood dust, Group 1
OSHA Regulated: Not listed
NTP: According to its Tenth Report on Carcinogens, NTP states, 鈥淲ood dust is known to be a human
carcinogen based on sufficient evidence of carcinogenicity from studies in humans. An association
between wood dust exposure and cancer of the nose has been observed in many case reports, cohort
studies, and case-control studies that specifically addressed nasal cancer. Strong and consistent
associations with cancer of the nasal cavities and paranasal sinuses were observed both in studies of
people whose occupations are associated with wood dust exposure and in studies that directly estimated
wood dust exposure.鈥?
IARC 鈥? Group l: Carcinogenic to humans; sufficient evidence of carcinogenicity. This classification is
primarily based on studies showing an association between occupational exposure to wood dust and
adenocarcinoma to the nasal cavities and paranasal sinuses. IARC did not find sufficient evidence of an
association between occupational exposure to wood dust and cancers of the oropharynx, hypopharynx,
lung, lymphatic and hematopoietic systems, stomach, colon or rectum.
4. Emergency and First-Aid Procedures
Ingestion: NAP
Eye Contact: Wood dust may cause mechanical irritation. Treat dust in eye as foreign object. Flush with
water to remove dust particles. Seek medical help if irritation persists.
Skin Contact: Wash with water to remove dust particles. Seek medical advice if a rash, persistent irritation or
dermatitis occurs.
Skin Absorption: NAP
Inhalation: Wood dust may cause unpleasant obstruction in the nasal passages, resulting in dryness of nose,
dry cough, sneezing and headaches. Remove to fresh air. If persistent irritation, severe coughing or
breathing difficulties occur, seek medical advice.
5. Fire and Explosion Data
Flash Point (Method Used): NAP
Wood dust: 40 grams per UFL = NAP
Flammable Limits: LFL =
cubic meter of air
Extinguishing Media: Water, Carbon Dioxide, Sand
Autoignition Temperature: Variable (typically 400掳 鈥? 500掳F)
Special Firefighting Procedures: Use water to wet down wood dust to reduce the likelihood of ignition or
dispersion of dust into air. Remove burned or wet dust to open area after fire is extinguished.
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5. Fire and Explosion Data (cont鈥檇.)
Unusual Fire and Explosion Hazards: Wood dust may present a strong to severe explosion hazard if dust
cloud contacts an ignition source.
Explosive Limits in Air: 40 grams/m3 (LEL)
Health = 1 Fire = 1 Reactivity = 0
NFPA Rating (Scale 0-4):
6. Accidental Release Measures
Steps to be Taken In Case Material Is Released or Spilled: Sweep up or vacuum up spills for recovery or
disposal. Avoid creating dust conditions. Place recovered wood dust in a container for proper disposal.
7. Handling and Storage
Precautions to be Taken In Handling and Storage: Keep away from ignition sources. Avoid eye contact.
Avoid prolonged or repeated contact with skin. Avoid prolonged or repeated breathing of wood dust.
Avoid contact with oxidizing agents and drying oils.
8. Exposure Control Measures, Personal Protection
Personal Protective Equipment: Protective equipment may be needed such as gloves, goggles, or safety
glasses and approved dust respirators depending upon dust conditions.
Ventilation: Provide adequate general and local exhaust ventilation to maintain healthful working conditions.
Due to the explosive potential of wood dust when suspended in air, ventilation systems should be kept
clean and precautions should be taken to prevent sparks or other ignition sources.
9. Physical/Chemical Properties
Physical Description: Light to dark colored, granular solid. Color and odor are dependent on the wood
species and time since dust was generated.
NAP
Boiling Point (@ 760 mm Hg):
Evaporation Rate (Butyl Acetate = 1): NAP
NAP
Freezing Point
NAP
Melting Point:
NAP
Molecular Formula:
NAP
Molecular Weight:
NAP
Oil-water Distribution Coefficient:
NAP
Odor Threshold:
NAP
pH:
Insoluble
Solubility in Water (% by weight):
Variable, depends on species and moisture content
Specific Gravity (H2O = 1):
NAP
Vapor Density (air = 1; 1 atm):
NAP
Vapor Pressure (mm Hg):
NAP
Viscosity:
% Volatile by Volume [@ 70oF (21oC)]: NAP
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10. Stability and Reactivity
鈱? Stable under normal conditions
Stability: Unstable
Conditions to Avoid: Avoid open flame and sparks
Incompatibility (Materials to Avoid): Avoid contact with oxidizing agents and drying oils. Avoid open flame.
Product may ignite at temperature in excess of 400掳F.
Hazardous Decomposition or By-Products: Thermal oxidative degradation of wood produces irritating and
toxic fumes and gases, including carbon monoxide, aldehydes and organic acids.
Hazardous Polymerization: NAP
Sensitivity to Mechanical Impact: NAP
Sensitivity to Static Discharge: NAP
11. Toxicological Information
Wood Dust:
Wood dust (softwood or hardwood): OSHA Hazard Rating = 3.3; moderately toxic with probable oral lethal
dose to humans being 0.5-5 g/kg (about 1 pound for a 70 kg or 150 pound person). Source: OSHA
Regulated Hazardous Substances, Government Institutes, Inc., February 1990.
Wood dust (generated from sawing, sanding or machining the product) may cause nasal dryness, irritation,
coughing and sinusitis. National Toxicology Program (NTP) and The International Agency for Research on
Cancer (IARC) classify wood dust as a human carcinogen (IARC Group 1). This classification is based
primarily on increased risk in the occurrence of adenocarcinomas of the nasal cavities and paranasal
sinuses associated with exposure to wood dust. The evaluation did not find sufficient evidence to
associate cancers of the oropharynx, hypopharynx, lung, lymphatic and hematopoietic systems, stomach,
colon or rectum with exposure to wood dust.
Additional Toxicity Data: See acute and chronic health effects provided in Section 3: Hazard Identification.
Target Organs: See acute and chronic health effects provided in Section 3: Hazard Identification.
12. Ecological Information
Environmental Fate: NAP
Environmental Toxicity: None
13. Disposal Considerations
Waste Disposal Method: Incineration in accordance with local, state, and federal regulations is preferred
because fugitive emissions can be effectively controlled. Landfill disposal in accordance with local, state,
and federal regulations is acceptable if actions are taken to contain the material until it can be covered by
other wastes or landfill cover materials.
14. Transport Information
Not regulated as a hazardous material by the U.S. Department of Transportation.
Not listed as a hazardous material in Canadian Transportation of Dangerous Goods (TDG).
15. Regulatory Information
TSCA: This product complies with TSCA inventory requirements.
CERCLA: NAP
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15. Regulatory Information (cont鈥檇.)
DSL: NAP
OSHA: Wood dust may be hazardous under the criteria of the federal OSHA Hazard Communication
standard 29 CFR 1910.1200.
STATE RIGHT-TO-KNOW:
Pennsylvania: Wood dust appears on Pennsylvania's Appendix A 鈥? Hazardous Substance Lists
SARA 313 Information: None
SARA 311/312 Hazard Category: NAP
FDA: NAP
WHMIS Classification: Wood dust is not considered a controlled product.
16. Additional Information
Date Prepared: 11/24/87
Date Revised: 06/16/2005
Prepared By: Weyerhaeuser Company, Corporate Environment, Health & Safety
Weyerhaeuser MSDS available on: http://www.weyerhaeuser.com/environment/msds/default.asp
User鈥檚 Responsibility: The information contained in this Material Safety Data Sheet is based on the
experience of occupational health and safety professionals and comes from sources believed to be
accurate or otherwise technically correct. It is the user鈥檚 responsibility to determine if the product is
suitable for its proposed application(s) and to follow necessary safety precautions. The user has the
responsibility to make sure that this sheet is the most up-to-date issue.
Definition of Common Terms:
ACGIH = American Conference of Governmental Industrial Hygienists
C = Ceiling Limit
CAS# = Chemical Abstracts System Number
DOT = U. S. Department of Transportation
DSL = Domestic Substance List
EC50 = Effective concentration that inhibits the endpoint to 50% of control population
EPA = U.S. Environmental Protection Agency
IARC = International Agency for Research on Cancer
IATA = International Air Transport Association
IMDG = International Maritime Dangerous Goods
LC50 = Concentration in air resulting in death to 50% of experimental animals
LCLo = Lowest concentration in air resulting in death
LD50 = Administered dose resulting in death to 50% of experimental animals
LDLo = Lowest dose resulting in death
LEL = Lower Explosive Limit
LFL = Lower Flammable Limit
MSHA = Mining Safety and Health Administration
NAP = Not Applicable
NAV = Not Available
NIOSH = National Institute for Occupational Safety and Health
NPRI = Canadian National Pollution Release Inventory
NTP = National Toxicology Program
OSHA = Occupational Safety and Health Administration
PEL = Permissible Exposure Limit
RCRA = Resource Conservation and Recovery Act
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16. Additional Information (cont鈥檇.)
STEL = Short-Term Exposure Limit (15 minutes)
STP = Standard Temperature and Pressure
TCLo = Lowest concentration in air resulting in a toxic effect
TDG = Canadian Transportation of Dangerous Goods
TDLo = Lowest dose resulting in a toxic effect
TLV = Threshold Limit Value
TSCA = Toxic Substance Control Act
TWA = Time-Weighted Average (8 hours)
UFL = Upper Flammable Limit
WHMIS = Workplace Hazardous Materials Information System
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WOOD DUST LABEL
WOOD DUST
(For All Wood Dust, Wood and Wood Products Not Preservative Treated)
CAUTION
WOOD DUST CAN BE PRODUCED BY SAWING, SANDING OR MACHINING
WOOD AND WOOD PRODUCTS
FLAMMABLE - POSSIBLE EXPLOSION HAZARD
MAY CAUSE RESPIRATORY, EYE AND SKIN IRRITATION
SOME SPECIES MAY CAUSE DERMATITIS OR ALLERGIC RESPONSE
THE INTERNATIONAL AGENCY FOR RESEARCH ON CANCER (IARC)
CLASSIFIES WOOD DUST AS A NASAL CARCINOGEN IN HUMANS
THE NATIONAL TOXICOLOGY PROGRAM (NTP) CLASSIFIES WOOD DUST AS A
KNOWN HUMAN CARCINOGEN
For Additional Information See the Material Safety Data Sheet
WEYERHAEUSER COMPANY
P.O. Box 9777
Federal Way, WA 98063-9777
Emergency Phone: (253) 924-5000
Additional Information: (253) 924-3865
Weyerhaeuser MSDS WC335-09
Page 7 of 7 Rev. 06/16/2005
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