=====================  Product Identification  =====================

MSDS NAME:WOOD DUST
NIIN:00B130017
MSDS Number: BBBRH
=== Responsible Party ===
Company:MASONITE CORPORATION
Address:1 SOUTH WACKER DRIVE
City:CHICAGO
State:IL
ZIP:60606
Country:US
Info Phone Num:312-750-0900
Emergency Phone Num:800-424-9300 (CHEMTREC)
CAGE:88748
=== Contractor Identification ===
Company:MASONITE CORPORATION
Address:1 SOUTH WACKER DRIVE
Box:City:CHICAGO
State:IL
ZIP:60606
Country:US
Phone:312-750-0900
CAGE:88748

=============  Composition/Information on Ingredients  =============

Name:WOOD DUST
Fraction by Wt: 100%
ACGIH TLV:1.0 MG/M3(HARDWOODS)

=====================  Hazards Identification  =====================

Routes of Entry: Inhalation:YES  Skin:YES  Ingestion:YES
Effects of Overexposure:AVOID PROLONGED OR REPEATED BREATHING OF WOOD
    DUST. REPEATED EXPOSURE(<5MG/M3) TO CERTAIN WOOD DUSTS, CAN PRODUCE
    ALLERGIC RESPONSES IN A FEW SENSITIVE PERSONS. AVOID REPEATED OR
    PROLONGED CONTACT W/  THE SKIN;MAY CAUSE ALLERGIC RESPONSES.
Medical Cond Aggravated by Exposure:IF ALLERGY SUCH AS
    DERMATITIS,ASTHMA, OR BRONCHITIS DEVELOPS, IT MAY BE NECESSARY TO
    REMOVE THE SENSITIZED WORKER FROM FURTHER EXPOSURE TO WOOD DUST.

=======================  First Aid Measures  =======================

First Aid:INHALATION:REMOVE TO FRESH AIR.IF PERSISTENT
    IRRITATION,SEVERE COUGHING,BREATHING DIFFICULTIES,OR RASH OCCUR,GET
    MEDICAL ADVICE.EYE CONTACT:FLUSH W/WATER TO REMOVE DUST PARTICLES
    FROM THE EYE.IF IRRIT ATION PERSISTS,GET MEDICAL ATTENTION.SKIN
    CONTACT:IF A RASH,OR PERSISTENT IRRITATION OR DERMATITIS OCCUR,GET
    MEDICAL ATTEN.

=====================  Fire Fighting Measures  =====================

Flash Point:NONE
Extinguishing Media:DETERMINED BY SURROUNDING FIRE.USE WATER SPRAY TO
    REDUCE CHANCE OF AUTOIGNITION OR DISPERSION INTO AIR.
Fire Fighting Procedures:AUTOIGNITION TEMPS DEPEND ON WOOD TYPE,
    PARTICE SIZE,MOISTURE,CONTENT,TIME AND RATE OF HEATING.
Unusual Fire/Explosion Hazard:WOOD DUST IS A STRONG TO SEVERE EXPLOSION
    HAZARD IF DUST CLOUD CONTACTS AN IGNITION SOURCE.PARTIALLY BURNED
    DUST IS ESPECIALLY HAZARDOUS IF DISPERSED IN AIR.

==================  Accidental Release Measures  ==================

Spill Release Procedures:SWEEP UP OR VACUUM UP SPILLS FOR RECOVERY OR
    DISPOSAL AVOIDING DUSTING CONDITIONS.PROVIDE GOOD VENTILATION.PLACE
    RECOVERED WOOD DUST IN A CONTAINER FOR PROPER HANDLING.

======================	Handling and Storage  ======================

Handling and Storage Precautions:KEEP IN A COOL,DRY PLACE AWAY FROM
    IGNITION SOURCES.HOT HUMID STORAGE CAN RESULT IN SPONTANEOUS
    HEATING OR COMBUSTION.
Other Precautions:PARTIALLY BURNED OR SCORCHED WOOD DUST CAN BE
    HAZARDOUS TO STORE.AVOID CONTACT WITH OXIDIZING AGENTS AND W/DRYING
    OILS.

=============  Exposure Controls/Personal Protection  =============

Respiratory Protection:WHEN DUSTING IS EXCESSIVE,AN APPROVED DUST
    RESPIRATOR MAY BE NEEDED AND PRECAUTIONS SHOULD BE TAKEN TO AVOID
    GENERATION OF EXPLOSIVE LEVELS OF WOOD DUST IN THE AIR.
Ventilation:PROVIDE ADEQUATE EXPLOSION-PROOF VENTILATION TO MEET TLV
    REQUIREMENTS.
Eye Protection:SAFETY GLASSES OR CHEMICAL GOGGLES
Other Protective Equipment:THE USE OF CLEAN BODY-COVERING WORK CLOTHING
    IS RECOMMENDED TO REDUCT EXPOSURE OF SKIN TO WOOD DUST.
Work Hygienic Practices:FOLLOW GOOD HYGIENIC PRACTICE.WASH
    FREQUENTLY;WEAR CLEAN WORK CLOTHING.
Supplemental Safety and Health
THE CHRONIC EFFECTS OF SKIN CONTACT W/WOOD DUST ARE NOT FULLY KNOWN AND
    MAY VARY FROM ONE WOOD TO ANOTHER.ONE STUDY INFERS THAT EXPOSURE TO
    WOOD DUST HAS BEEN STATISTICALLY ASSOCIATED W/NASAL CANCER I N
    BRITISH FURNITURE WORKERS.

==================  Physical/Chemical Properties  ==================

HCC:T6
Spec Gravity:<1
Solubility in Water:NIL
Appearance and Odor:LT YELLOW-BUFF GRANULAR-FINE POWDERED SOLID. ODOR
    DEPENDENT ON SOURCE AND AGE.

=================  Stability and Reactivity Data  =================

Stability Indicator/Materials to Avoid:YES
OXIDIZING AGENTS AND DRYING OILS.
Stability Condition to Avoid:IGNITION SOURCES,HOT HUMID STORAGE AREA.
Hazardous Decomposition Products:BURNING PRODUCES IRRITATING AND TOXIC
    FUMES AND GASES INCLUDING CO, ALDEHYDES, AND ORGANIC ACIDS.

====================  Disposal Considerations  ====================

Waste Disposal Methods:IN ACCORDANCE W/FEDERAL,STATE AND LOCAL
    REGULATIONS.NORMALLY DEPOSITED IN A LANDFILL OR
    INCINERATED.DISPOSAL IS THE RESPONSIBILITY OF THE END USER.

 Disclaimer (provided with this information by the compiling agencies):
 This information is formulated for use by elements of the Department
 of Defense.  The United States of America in no manner whatsoever,
 expressly or implied, warrants this information to be accurate and
 disclaims all liability for its use.  Any person utilizing this
 document should seek competent professional advice to verify and
 assume responsibility for the suitability of this information to their
 particular situation.

*** END OF RECORD ***