MALLINCKRODT INC., SCIENCE PRODUCTS DIV -- METHYL SULFOXIDE -- - 
=====================  Product Identification  =====================

Product ID:METHYL SULFOXIDE
MSDS Date:11/13/1985
FSC:NIIN:Submitter:F BT
Status Code:A
=== Responsible Party ===
Company Name:MALLINCKRODT INC., SCIENCE PRODUCTS DIV
Box:M
City:PARIS
State:KY
ZIP:40361-0315
Country:US
Info Phone Num:314-982-5000
Emergency Phone Num:314-539-1600
CAGE:1BF21
=== Contractor Identification ===
Company Name:MALLINCKRODT INC., SCIENCE PRODUCTS DIV
Box:M
City:PARIS
State:KY
ZIP:40361-0315
Country:US
Phone:314-982-5000
CAGE:1BF21

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

Ingred Name:METHYL SULFOXIDE
CAS:67-68-5
RTECS #:PV6210000
= Wt:100.

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

Health Hazards Acute and Chronic:WARNING!  HARMFUL IF SWALLOWED,
    INHALED OR ABSORBED THROUGH SKIN.  CAUSES IRRITATION.  COMBUSTIBLE.
     AVOID BREATHING MIST.  KEEP CONTAINER CLOSED.  USE WITH ADEQUATE
    VENTILATION.  AVOID CONTACT WITH E YES, SKIN AND CLOTHING.	WASH
    THOROUGHLY AFTER HANDLING.
Effects of Overexposure:INHALATION: INHALATION OF VAPORS OR MIST MAY
    IRRITATE RESPIRATORY TRACT RESULTING IN SYMPTOMS OF COUGHING OR
    BURNING SENSATION. INGESTION: ABDOMINAL PAIN, VOMITING, DIARRHEA,
    DROWSINESS. SKIN: AN IRRI TANT CAUSING REDNESS, ITCHING, AND
    SCALING, READILY ABSORBED THROUGH THE SKIN. GARLIC-LIKE TASTE AND
    ODOR MAY DEVELOP ON THE BREATH AND SKIN. TRANSIENT DISTURBANCES OF
    COLOR VISION, PHOTOPHOBIA, HEADA CHE, DIARRHEA, AND DERMATITIS MAY
    RESULT FROM SKIN APPLICATIONS. EYE: REDNESS, PAIN, BLURRED VISION.
Medical Cond Aggravated by Exposure:PERSONS WITH PRE-EXISTING SKIN
    DISORDERS OR EYE PROBLEMS OR IMPAIRED LIVER OR KIDNEY FUNCTION MAY
    BE MORE SUSCEPTIBLE TO THE EFFECTS OF THE SUBSTANCE. TOPICAL
    APPLICATION ENHANCES DERMAL ABSORPTION.

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

First Aid:INHALATION: REMOVE TO FRESH AIR.  INGESTION: IF SWALLOWED,
    INDUCE VOMITING IMMEDIATELY BY GIVING TWO GLASSES OF WATER, OR MILK
    IF AVAILABLE AND STICKING FINGER DOWN THROAT.  NEVER GIVE ANTHING
    BY MOUT H TO AN UNCONSCIOUS PERSON.  EYE: WASH EYES WITH PLENTY OF
    WATER FOR AT LEAST 15 MINUTES.  IN ALL CASES, SEEK IMMEDIATE
    MEDICAL ATTENTION!

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

Flash Point Method:CC
Flash Point:=88.9C, 192.F
Autoignition Temp:=215.C, 419.F
Lower Limits:2.6
Upper Limits:28.5
Extinguishing Media:DRY CHEMICAL, FOAM OR CARBON DIOXIDE.
Fire Fighting Procedures:IN THE EVENT OF A FIRE, WEAR FULL PROTECTIVE
    CLOTHING AND NIOSH-APPROVED SELF-CONTAINED BREATHING APPARATUS WITH
    FULL FACEPIECE OPERATED IN THE PRESSURE DEMAND OR OTHER POSITIVE
    PRESSURE MODE.
Unusual Fire/Explosion Hazard:ABOVE FLASH POINT, VAPOR-AIR MIXTURES ARE
    EXPLOSIVE WITHIN FLAMMABLE LIMITS.

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

Spill Release Procedures:VENTILATE AND EVACUATE AREA. CLEAN0UP
    PERSONNEL MAY REQUIRE PROTECTIVE CLOTHING AND RESPIRATORY
    PROTECTION FROM VAPORS. ALLOW ONLY QUALIFIED PERSONNEL TO HANDLE
    THE SPILL. CONTAIN AND RECOVER SPILLS W HEN POSSIBLE. COVER LARGER
    SPILLS WITH EARTH, SAND, OR INERT SOLID. SCOOP UP WITH NON-SPARKING
    TOOLS AND PLACE IN AN APPROPRIATE CONTAINER.

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

Handling and Storage Precautions:KEEP IN A TIGHTLY CLOSED CONTAINER. 
    PROTECT FROM PHYSICAL DAMAGE.  STORE IN A COOL, DRY, VENTILATED
    AREA AWAY FROM SOURCES OF HEAT, MOISTURE AND INCOMPATIBILITIES.

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

Respiratory Protection:FOR CONDITIONS OF USE WHERE EXPOSURE TO THE
    VAPOR IS APPARENT, A HALF MASK CHEMICAL CARTRIDGE RESPIRATOR MAY BE
    WORN.  FOR EMERGENCIES, A SELF-CONTAINED BREATHING APPARATUS MAY BE
    NECESSARY.
Ventilation:A LOCAL EXHAUST SYSTEM WHICH CAPTURES THE CONTAMINANT AT
    ITS SOURCE IS RECOMMENDED.
Protective Gloves:IMPERVIOUS
Eye Protection:CHEMICAL SAFETY GOGGLES
Other Protective Equipment:IMPERVIOUS PROTECTIVE CLOTHING, BOOTS, LAB
    COAT, APRON OR COVERALLS.  MAINTAIN EYE WASH FOUNTAIN AND
    QUICK-DRENCH FACILITIES IN WORK AREA.
Supplemental Safety and Health
NFPA RATINGS: HEALTH=1, FLAMMABILITY=1, REACTIVITY=0.

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

Boiling Pt:=188.9C, 372.F
Melt/Freeze Pt:=18.5C, 65.3F
Vapor Pres:0.37
Vapor Density:2.7
Spec Gravity:1.10
Evaporation Rate & Reference:4.3
Solubility in Water:MISCIBLE WITH WATER.
Appearance and Odor:CLEAR, COLORLESS, ODORLESS LIQUID.

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

Stability Indicator/Materials to Avoid:YES
STRONG OXIDANTS, ACYLHALIDES, ARYLHALIDES, BROMOBENZOYL ACETANILIDE,
    MAGNESIUM PERCHLORATE, PERCHLORIC ACID AND SODIUM HYDROXIDE.
Hazardous Decomposition Products:UPON HEATING ABOVE 100C, SULFUR
    DIOXIDE IS EVOLVED FROM THIS SUBSTANCE. HAZARDOUS THERMO-OXIDATIVE
    DEGRADATION PRODUCTS FROM DMSO INCLUDE FORMALDEHYDE, METHYL
    MERCAPTAN AND SULFUR DIOXIDE.

===================  Toxicological Information	===================

Toxicological Information:ORAL RAT: 17, 500 MG/KG.  IRRITATION DATA:
    SKIN RABBIT: 10 MG/24 HOUR, MILD EYE RABBIT: 100 MG.  MUTATION
    REFERENCES CITED.  REPRODUCTIVE EFFECTS CITED.

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

Waste Disposal Methods:WASTE MAY BE DISPOSED IN A RCRA APPROVED
    FACILITY.

=====================  Regulatory Information  =====================

SARA Title III Information:SARA 302/313: NO.  SARA 311/312: ACUTE,
    CHRONIC, FIRE.
Federal Regulatory Information:CERCLA: NO	      RCRA: NO

=======================  Other Information  =======================

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