MALLINCKRODT INC. SCIENCE PRODUCTS DIV. -- PYROCATECHOL  -- 6810-00-246-6276
<pre>=====================  Product Identification  =====================

Product ID:PYROCATECHOL
MSDS Date:11/09/1992
FSC:6810
NIIN:00-246-6276
=== Responsible Party ===
Company Name:MALLINCKRODT INC. SCIENCE PRODUCTS DIV.
Box:800
City:PARIS
State:KY
ZIP:40362
Country:US
Info Phone Num:314-539-1600
Emergency Phone Num:314-539-1600
CAGE:62910
=== Contractor Identification ===
Company Name:MALLINCKRODT SPECIALTY CHEMICALS CO
Address:222 RED SCHOOL LANE
Box:City:PHILLIPSBURG
State:NJ
ZIP:08865
Country:US
Phone:908-859-2151
CAGE:62910

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

Ingred Name:CATECHOL; PYROCATECHOL
CAS:120-80-9
RTECS #:DJ3450000
Other REC Limits:5 PPM
OSHA PEL:5 PPM
ACGIH TLV:2320 MG/CUM
EPA Rpt Qty:1 LB
DOT Rpt Qty:1 LB

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

LD50 LC50 Mixture:ORAL LD50 (RAT): 260 MG/KG
Routes of Entry: Inhalation:YES  Skin:YES  Ingestion:YES
Reports of Carcinogenicity:NTP:NO    IARC:NO	OSHA:NO
Health Hazards Acute and Chronic:INHALATION: DIGESTIVE DISTURBANCES.
    INGESTION: POISONOUS. POSSIBLY DEATH. SKIN: CORROSIVE. ABSORPTION
    W/SYSTEMIC POISONING EFFECTS TO FOLLOW. DISCOLORATION & SEVERE
    BURNS. EYES: CORROSIVE. SEVERE DAMA GE & BLINDNESS. REPEATED
    EXPOSURE MAY CAUSE LIVER, KIDNEY & NEUROLOGICAL DISORDERS.
Explanation of Carcinogenicity:NONE
Effects of Overexposure:INHALATION: VOMITING, DIFFICULT IN SWALLOWING,
    DIARRHEA, LOSS OF APPETITE. INGESTION: BURNING PAIN IN MOUTH &
    THROAT, ABDOMINAL PAIN, HEADACHE, DIZZINESS, MUSCULAR WEAKNESS,
    IRREGULAR BREATHING, COMA  & POSSIBLY DEATH. SKIN: DISCOLORATION
    &SEVERE BURNS. EYES: REDNESS, PAIN, BLURRED VISION.
Medical Cond Aggravated by Exposure:PRE-EXISTING SKIN DISORDERS OR EYE
    PROBLEMS OR IMPAIRED LIVER OR KIDNEY FUNCTION.

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

First Aid:INHALATION: REMOVE TO FRESH AIR. GIVE CPR/OXYGEN IF
    NECESSARY. INGESTION: INDUCE VOMITING IMMEDIATELY BY GIVING 2
    GLASSES OF WATER & STICKING FINGER DOWN THROAT. NEVER GIVE ANYTHING
    BY MOUTH TO AN UNC ONSCIOUS PERSON. SKIN: FLUSH W/PLENTY OF WATER
    FOR AT LEAST 15 MINS WHILE REMOVING CONTAMINATED CLOTHING & SHOES.
    EYES: WASH W/PLENTY OF WATER FOR AT LEAST 15 MINS. OBTAIN MED ATTN
    IN ALL CASES.

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

Flash Point:137C/279F
Extinguishing Media:WATER SPRAY, DRY CHEMICAL, ALCOHOL FOAM OR CO2
Fire Fighting Procedures:WEAR FULL PROTECTIVE CLOTHING & NIOSH APPROVED
    SCBA W/FULL FACEPIECE OPERATED IN THE PRESSURE DEMAND OR OTHER
    POSITIVE PRESSURE MODE.
Unusual Fire/Explosion Hazard:FINE DUST DISPERSED IN AIR IN SUFFICIENT
    CONCENTRATIONS & IN THE PRESENCE OF AN IGNITION SOURCE IS A
    POTENTIAL DUST EXPLOSION.

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

Spill Release Procedures:REMOVE IGNITION SOURCES. VENTILATE AREA. WEAR
    PROTECTIVE EQUIPMENT. CLEAN UP IN A MANNER THAT DOES NOT DISPERSE
    DUST INTO THE AIR. USE NON-SPARKING TOOLS. PICK UP SPILL FOR
    RECOVERY OR DISPOSAL & PLAC E IN A CLOSED CONTAINER.

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

Handling and Storage Precautions:KEEP IN A TIGHTLY CLOSED CONTAINER.
    STORE IN A COOL, DRY, VENTILATED AREA. PROTECT AGAINST PHYSICAL
    DAMAGE. ISOLATE FROM INCOMPATIBLE SUBSTANCES.
Other Precautions:AVOID CONTACT W/EYES, SKIN, CLOTHING & BREATHING OF
    DUST. USE W/ADEQUATE VENTILATION. DON'T WEAR CONTACT LENSES WHEN
    WORKING W/THIS MATERIAL.

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

Respiratory Protection:IF THE TLV IS EXCEEDED, USE A NIOSH APPROVED
    DUST/MIST RESPIRATOR. ALTERNATIVELY, A SUPPLIED AIR FULL FACEPIECE
    RESPIRATOR OR AIRLINED HOOD MAY BE WORN.
Ventilation:LOCAL &/OR GENERAL EXHAUST TO KEEP BELOW TLV.
Protective Gloves:IMPERVIOUS
Eye Protection:CHEMICAL SAFETY GOGGLES/FULL FACE SHIELD
Other Protective Equipment:BOOTS, LAB COAT, APRON, COVERALLS, EYE WASH
    FOUNTAIN & QUICK DRENCH FACILITIES IN WORK AREA.
Work Hygienic Practices:REMOVE/LAUNDER CONTAMINATED CLOTHING BEFORE
    REUSE. WASH THOROUGHLY AFTER HANDLING.
Supplemental Safety and Health

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

Boiling Pt:B.P. Text:245C (473F)
Melt/Freeze Pt:M.P/F.P Text:219-223F
Vapor Pres:10
Vapor Density:3.79
Spec Gravity:1.344
Solubility in Water:COMPLETE
Appearance and Odor:COLORLESS CRYSTALS W/FAINT CHARACTERISTIC ODOR.

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

Stability Indicator/Materials to Avoid:YES
ACID CHLORIDES, ACID ANHYDRIDES, BASES, OXIDIZING AGENTS.
Stability Condition to Avoid:ELEVATED TEMPS OR OTHER SOURCES OF
    IGNITION, AIR, LIGHT
Hazardous Decomposition Products:CO2 & CO

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

Waste Disposal Methods:WHATEVER CANNOT BE SAVED FOR RECOVERY MAY BE
    BURNED IN AN APPROVED INCINERATOR OR DISPOSED OF IN AN APPROVED
    WASTE FACILITY. REPORTABLE QUANTITY: 1 LB. DISPOSE OF IN ACCORDANCE
    W/LOCAL, STATE & FEDERA L REGULATIONS.

 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.