------------------------------------------------------------------------------ MSDS for DIMETHYL SULFOXIDE Page 1 ------------------------------------------------------------------------------ ------------------------------------------------------------------------------ 1 - PRODUCT IDENTIFICATION ------------------------------------------------------------------------------ PRODUCT NAME: DIMETHYL SULFOXIDE FORMULA: (CH3)2SO FORMULA WT: 78.13 CAS NO.: 00067-68-5 NIOSH/RTECS NO.: PV6210000 COMMON SYNONYMS: METHYL SULFOXIDE; DMSO; SULFINYLBIS[METHANE] PRODUCT CODES: 9224,9194 EFFECTIVE: 11/24/86 REVISION #02 PRECAUTIONARY LABELLING BAKER SAF-T-DATA(TM) SYSTEM HEALTH - 1 SLIGHT FLAMMABILITY - 2 MODERATE REACTIVITY - 1 SLIGHT CONTACT - 1 SLIGHT HAZARD RATINGS ARE 0 TO 4 (0 = NO HAZARD; 4 = EXTREME HAZARD). LABORATORY PROTECTIVE EQUIPMENT SAFETY GLASSES; LAB COAT; VENT HOOD; PROPER GLOVES; CLASS B EXTINGUISHER PRECAUTIONARY LABEL STATEMENTS WARNING COMBUSTIBLE CAUSES IRRITATION HARMFUL IF INHALED OR ABSORBED THROUGH SKIN FOR CHEMICAL PURPOSES ONLY. NOT TO BE USED OR RESOLD FOR DRUG PURPOSES KEEP AWAY FROM HEAT, SPARKS, FLAME. AVOID CONTACT WITH EYES, SKIN, CLOTHING. KEEP IN TIGHTLY CLOSED CONTAINER. WASH THOROUGHLY AFTER HANDLING. IN CASE OF FIRE, USE WATER SPRAY, ALCOHOL FOAM, DRY CHEMICAL, OR CARBON DIOXIDE. FLUSH SPILL AREA WITH WATER SPRAY. SAF-T-DATA(TM) STORAGE COLOR CODE: RED (FLAMMABLE) ------------------------------------------------------------------------------ 2 - HAZARDOUS COMPONENTS ------------------------------------------------------------------------------ COMPONENT % CAS NO. DIMETHYL SULFOXIDE 90-100 67-68-5 ------------------------------------------------------------------------------ 3 - PHYSICAL DATA ------------------------------------------------------------------------------ BOILING POINT: 189 C ( 372 F) VAPOR PRESSURE(MM HG): 0.46 ------------------------------------------------------------------------------ MSDS for DIMETHYL SULFOXIDE Page 2 ------------------------------------------------------------------------------ MELTING POINT: 18 C ( 64 F) VAPOR DENSITY(AIR=1): 2.7 SPECIFIC GRAVITY: 1.10 EVAPORATION RATE: N/A (H2O=1) (BUTYL ACETATE=1) SOLUBILITY(H2O): COMPLETE (IN ALL PROPORTIONS) % VOLATILES BY VOLUME: 100 APPEARANCE & ODOR: COLORLESS AND NEARLY ODORLESS LIQUID. ------------------------------------------------------------------------------ 4 - FIRE AND EXPLOSION HAZARD DATA ------------------------------------------------------------------------------ FLASH POINT (CLOSED CUP 89 C ( 192 F) NFPA 704M RATING: 1-1-0 FLAMMABLE LIMITS: UPPER - 63 % LOWER - 3.0 % FIRE EXTINGUISHING MEDIA USE WATER SPRAY, CARBON DIOXIDE, DRY CHEMICAL OR ORDINARY FOAM. SPECIAL FIRE-FIGHTING PROCEDURES FIREFIGHTERS SHOULD WEAR PROPER PROTECTIVE EQUIPMENT AND SELF-CONTAINED BREATHING APPARATUS WITH FULL FACEPIECE OPERATED IN POSITIVE PRESSURE MODE. MOVE CONTAINERS FROM FIRE AREA IF IT CAN BE DONE WITHOUT RISK. USE WATER TO KEEP FIRE-EXPOSED CONTAINERS COOL. UNUSUAL FIRE & EXPLOSION HAZARDS VAPORS MAY FLOW ALONG SURFACES TO DISTANT IGNITION SOURCES AND FLASH BACK. CLOSED CONTAINERS EXPOSED TO HEAT MAY EXPLODE. CONTACT WITH STRONG OXIDIZERS MAY CAUSE FIRE. TOXIC GASES PRODUCED SULFUR DIOXIDE, MERCAPTANS, CARBON MONOXIDE, CARBON DIOXIDE, FORMALDEHYDE ------------------------------------------------------------------------------ 5 - HEALTH HAZARD DATA ------------------------------------------------------------------------------ DIMETHYL SULFOXIDE IS CONSIDERED TO BE RELATIVELY NON-TOXIC. HOWEVER, RAPID SKIN ABSORPTION OF DIMETHYL SULFOXIDE MAY RESULT IN THE INCREASED SKIN ABSORPTION OF OTHER MORE TOXIC MATERIALS. TOXICITY: LD50 (ORAL-RAT)(G/KG) - 17.5 LD50 (IPR-RAT)(MG/KG) - 9800 LD50 (IV-RAT) (MG/KG) - 5360 CARCINOGENICITY: NTP: NO IARC: NO Z LIST: NO OSHA REG: NO EFFECTS OF OVEREXPOSURE INHALATION OF VAPORS MAY CAUSE NAUSEA, VOMITING, LIGHTHEADEDNESS OR HEADACHE. CONTACT WITH SKIN OR EYES MAY CAUSE IRRITATION. LIQUID IS READILY ABSORBED THROUGH THE SKIN. INGESTION MAY CAUSE NAUSEA, VOMITING AND LOSS OF CONSCIOUSNESS. CHRONIC EFFECTS OF OVEREXPOSURE MAY INCLUDE KIDNEY AND/OR LIVER DAMAGE. ------------------------------------------------------------------------------ MSDS for DIMETHYL SULFOXIDE Page 3 ------------------------------------------------------------------------------ TARGET ORGANS SKIN MEDICAL CONDITIONS GENERALLY AGGRAVATED BY EXPOSURE SKIN DISORDERS ROUTES OF ENTRY INHALATION, INGESTION, ABSORPTION, SKIN CONTACT, EYE CONTACT EMERGENCY AND FIRST AID PROCEDURES CALL A PHYSICIAN. IF SWALLOWED, DO NOT INDUCE VOMITING. IF INHALED, REMOVE TO FRESH AIR. IF NOT BREATHING, GIVE ARTIFICIAL RESPIRATION. IF BREATHING IS DIFFICULT, GIVE OXYGEN. IN CASE OF CONTACT, IMMEDIATELY FLUSH EYES OR SKIN WITH PLENTY OF WATER FOR AT LEAST 15 MINUTES. ------------------------------------------------------------------------------ 6 - REACTIVITY DATA ------------------------------------------------------------------------------ STABILITY: STABLE HAZARDOUS POLYMERIZATION: WILL NOT OCCUR CONDITIONS TO AVOID: HEAT, FLAME, OTHER SOURCES OF IGNITION INCOMPATIBLES: STRONG OXIDIZING AGENTS, ACTIVE HALOGEN COMPOUNDS, ALKALI METALS DECOMPOSITION PRODUCTS: OXIDES OF SULFUR, MERCAPTANS, FORMALDEHYDE, CARBON MONOXIDE, CARBON DIOXIDE ------------------------------------------------------------------------------ 7 - SPILL AND DISPOSAL PROCEDURES ------------------------------------------------------------------------------ STEPS TO BE TAKEN IN THE EVENT OF A SPILL OR DISCHARGE WEAR SUITABLE PROTECTIVE CLOTHING. SHUT OFF IGNITION SOURCES; NO FLARES, SMOKING, OR FLAMES IN AREA. STOP LEAK IF YOU CAN DO SO WITHOUT RISK. USE WATER SPRAY TO REDUCE VAPORS. TAKE UP WITH SAND OR OTHER NON-COMBUSTIBLE ABSORBENT MATERIAL AND PLACE INTO CONTAINER FOR LATER DISPOSAL. FLUSH AREA WITH WATER. DISPOSAL PROCEDURE DISPOSE IN ACCORDANCE WITH ALL APPLICABLE FEDERAL, STATE, AND LOCAL ENVIRONMENTAL REGULATIONS. ------------------------------------------------------------------------------ 8 - PROTECTIVE EQUIPMENT ------------------------------------------------------------------------------ VENTILATION: USE ADEQUATE GENERAL OR LOCAL EXHAUST VENTILATION TO KEEP VAPOR AND MIST LEVELS AS LOW AS POSSIBLE. RESPIRATORY PROTECTION: NONE REQUIRED WHERE ADEQUATE VENTILATION CONDITIONS EXIST. IF AIRBORNE CONCENTRATION IS HIGH, A CHEMICAL CARTRIDGE RESPIRATOR WITH ORGANIC VAPOR CARTRIDGE IS RECOMMENDED. IF CONCENTRATION ------------------------------------------------------------------------------ MSDS for DIMETHYL SULFOXIDE Page 4 ------------------------------------------------------------------------------ EXCEEDS CAPACITY OF CARTRIDGE RESPIRATOR, A SELF- CONTAINED BREATHING APPARATUS IS ADVISED. EYE/SKIN PROTECTION: SAFETY GOGGLES, UNIFORM, APRON, BUTYL RUBBER GLOVES ARE RECOMMENDED. ------------------------------------------------------------------------------ 9 - STORAGE AND HANDLING PRECAUTIONS ------------------------------------------------------------------------------ SAF-T-DATA(TM) STORAGE COLOR CODE: RED (FLAMMABLE) SPECIAL PRECAUTIONS KEEP CONTAINER TIGHTLY CLOSED. STORE IN A COOL, DRY, WELL-VENTILATED, FLAMMABLE LIQUID STORAGE AREA OR CABINET. PRODUCT MAY SOLIDIFY AT ROOM TEMPERATURE. STORE ABOVE 20 C. ------------------------------------------------------------------------------ 10 - TRANSPORTATION DATA AND ADDITIONAL INFORMATION ------------------------------------------------------------------------------ DOMESTIC (D.O.T.) PROPER SHIPPING NAME COMBUSTIBLE LIQUID, N.O.S. (DIMETHYL SULFOXIDE) HAZARD CLASS COMBUSTIBLE LIQUID UN/NA UN1993 LABELS NO LABEL REQUIRED UNDER 110 GALLONS INTERNATIONAL (I.M.O.) PROPER SHIPPING NAME CHEMICALS, N.O.S. (NON-REGULATED)