Product ID:METHYL ETHYL KETONE (MSDS NUMBER: M4628)
MSDS Date:12/08/1996
FSC:6810
NIIN:01-322-4575
MSDS Number: BKCHF

MALLINKRODT-BAKER (FORMALLY J.T. BAKER COMPANY)

222 RED SCHOOL LANE
PHILLIPSBURG, NJ 08865-2219
US

Emergency Phone: 800-582-2537 EXT 6501

Info Phone: 800-582-2537 EXT 6501

Preparer: C.A. EISENHARD

Cage: EO303

MALLINKRODT-BAKER (FORMALLY J.T. BAKER COMPANY)

NONE PHILLIPSBURG, NJ 08865-2219 US

Telephone: 800-582-2537 EXT 6501/908-859-2151

Cage: EO303

METHYL ETHYL KETONE (2-BUTANONE) (MEK) (SARA III)

CAS: 78-93-3

RTECS: EL6475000

Fraction By Weight: 99-100%

OSHA PEL 200 PPM/300 STEL

ACGIH TLV: 200 PPM/300STEL 9192

EPA Report Quantity: 5000 LBS

DOT Report Quantity: 5000 LBS

LD50 LC50 Mixture:LD50 (ORAL RAT) IS 2737 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:ACUTE:INGESTION:HEADACHE, NAUSEA,
VOMITING, DIZZINESS, GI IRRITATION, CNS DEPRESSION.
INHALATION:IRRITATION OF UPPER RESPIRATORY TRACT, NAUSEA, VOMITING,
HEADACHES AND UNCONSCIOUSNESS. SKIN:DRYING OF SKIN, IRRITATION.
EYE:IRRITATION, CORNEAL DAMAGE. CHRONIC:PROLONGED EXPOSURE CAN
CAUSE DERMATITIS.
Explanation of Carcinogenicity:THIS PRODUCT IS NOT LISTED BY IARC, NTP,
OR OSHA AS A CARCINOGEN.
Effects of Overexposure:HEADACHE, DROWSINESS, NAUSEA, VOMITING,
UNCONSCIOUSNESS, IRRITATION TO NASAL PASSAGES, EYES, MUCOUS
MEMBRANES, STUPOR, DRYING OF SKIN.
Medical Cond Aggravated by Exposure:PERSONS WITH A HISTORY OF AILMENTS
OR WITH A PRE-EXISTING DISEASE INVOLVING THE EYES, SKIN, OR
RESPIRATORY TRACT MAY BE AT INCREASED RISK FROM EXPOSURE.

First Aid:INHALATION:REMOVE TO FRESH AIR. RESUSCITATE IF NOT BREATHING.
GET MEDICAL ATTENTION. EYES:IMMEDIATELY FLUSH WITH PLENTY OF WATER
FOR 15 MINUTES HOLDING EYELIDS OPEN. GET MEDICAL ATTENTION.
SKIN:REMOVE CONTAMINATED CLOTHING. WASH WITH SOAP AND WATER. IF
IRRITATION PERSISTS, GET MEDICAL ADVICE. INGESTION: DO NOT INDUCE
VOMITING. GIVE NOTHING BY MOUTH IF UNCONSCIOUS. GET IMMEDIATE
MEDICAL ATTENTION.

Flash Point Method:CC
Flash Point:16.0F,-8.9C
Autoignition Temp:Autoignition Temp Text:759F
Lower Limits:1.8
Upper Limits:11.4
Extinguishing Media:USE CARBON DIOXIDE, FOAM, OR DRY CHEMICAL.
Fire Fighting Procedures:WEAR FIRE FIGHTING PROTECTIVE EQUIPMENT AND A
FULL FACED SELF CONTAINED BREATHING APPARATUS. EVACUATE AREA. COOL
FIRE EXPOSED CONTAINERS WITH WATER SPRAY.
Unusual Fire/Explosion Hazard:VAPORS MAY FLOW ALONG SURFACES TO DISTANT
IGNITION SOURCES AND FLASH BACK. CLOSED CONTAINERS EXPOSED TO HEAT
MAY EXPLODE.

Spill Release Procedures:SMALL SPILL: WIPE/SOAK UP WITH PAPER TOWEL OR
INERT ABSORBANT. PUT IN DISPOSAL CONTAINER. REMOVE RESIDUE WITH
WATER. LARGE SPILL: EVACUATE AND VENTILATE AREA. IF POSSIBLE, STOP
LEAK. DIKE TO RETAIN RU N OFF. VACUUM UP FREE LIQUID. ABSORB/WASH
RESIDUE.
Neutralizing Agent:NOT APPLICABLE.

Handling and Storage Precautions:STORE IN A COOL, DRY, WELL VENTILATED
AREA AWAY FROM SOURCES OF IGNITION. KEEP CONTAINERS TIGHTLY CLOSED
WHEN NOT IN USE. STORE BELOW 120 DEG. F.
Other Precautions:DO NOT TAKE INTERNALLY. DO NOT BREATHE MIST. AVOID
PROLONGED OR REPEATED BREATHING OF VAPOR. AVOID CONTACT WITH EYES.
USE WITH ADEQUATE VENTILATION. WASH THOROUGHLY AFTER HANDLING. USE
SPARK-RESISTANT TOOLS.

Respiratory Protection:IF VENTILATION DOES NOT MAINTAIN INHALATION
EXPOSURES BELOW PEL(TLV), USE NIOSH/MSHA APPROVED FULL-FACE ORGANIC
VAPOR CARTRIDGE OR CANISTER RESPIRATORS AS PER CURRENT 29 CFR
1910.134, INSTRUCTIONS/WAR NINGS AND NIOSH-RESPIRATOR SELECTION.
Ventilation:MECHANICAL (GENERAL) ROOM VENTILATION AND LOCAL EXHAUST
BOTH REQUIRED.
Protective Gloves:BUTYL RUBBER
Eye Protection:CHEMICAL SAFETY GOGGLES
Other Protective Equipment:EYE WASH STATION AND SAFETY SHOWER.
INDUSTRIAL-TYPE WORK CLOTHING, APRON, AND BOOTS IF SPILLS OR
SPLASHING CAN OCCUR.
Work Hygienic Practices:WASH THOROUGHLY WITH SOAP AND WATER AFTER
HANDLING. DO NOT WEAR CONTAMINATED CLOTHING OR FOOTWEAR.
Supplemental Safety and Health
AVOID PROLONGED OR REPEATED EXPOSURE. DO NOT GET ON SKIN OR IN EYES. DO
NOT BREATHE VAPORS OR MISTS. DISCARD CONTAMINATED LEATHER CLOTHING.

HCC:F2
Boiling Pt:B.P. Text:176F,80C
Melt/Freeze Pt:M.P/F.P Text:-123F,-86C
Vapor Pres:78@ 20C
Vapor Density:2.5
Spec Gravity:0.81
Evaporation Rate & Reference:2.7 (ETHER=1)
Solubility in Water:>10% (APPRECIABLE)
Appearance and Odor:CLEAR, COLORLESS LIQUID, KETONE-LIKE ODOR
Percent Volatiles by Volume:100

Stability Indicator/Materials to Avoid:YES
STRONG OXIDIZING AGENTS
Stability Condition to Avoid:HIGH HEAT, OPEN FLAMES AND OTHER SOURCES
OF IGNITION
Hazardous Decomposition Products:CARBON MONOXIDE, CARBON DIOXIDE.

Waste Disposal Methods:DISPOSAL SHOULD BE MADE IN ACCORDANCE WITH ALL
APPLICABLE FEDERAL, STATE AND LOCAL LAWS AND REGULATIONS. EPA
HAZARDOUS WASTE # U159(TOXIC WASTE).

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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.