MATERIAL SAFETY DATA SHEET
Date-Issued: 12/26/2000
MSDS Ref. No: 217110
Date-Revised: 02/21/2001
Revision No: 1
Methyl Ethyl Ketone
1. PRODUCT AND COMPANY IDENTIFICATION
PRODUCT NAME: Methyl Ethyl Ketone
PRODUCT DESCRIPTION: Methyl Ethyl Ketone
PRODUCT CODE: 217110
PRODUCT FORMULATION NAME: Methyl Ethyl Ketone
CHEMICAL FAMILY: Ketone
GENERIC NAME: 2-Butanone, MEK
MANUFACTURER
Americhem Sales Corporation
340 North Street
Mason, MI 48854
Contact: Americhem Sales Corporation
Product Stewardship: 517-676-9363
Transportation: 517-676-9363
24 HR. EMERGENCY
TELEPHONE NUMBERS
CHEMTREC (U.S.): (800) 424-9300
Canutec (613) 996-6666
Emergency Phone: 800-424-9300
2. COMPOSITION / INFORMATION ON
INGREDIENTS
Chemical Name Wt.% CAS# EINECS#
2-Butanone >99 78-93-3
3. HAZARDS IDENTIFICATION
EMERGENCY OVERVIEW
IMMEDIATE CONCERNS: Warning! Flammable liquid and vapor.
High vapor concentrations may cause drowsiness and irritation of the eyes
or respiratory tract. Prolonged or repeated skin contact may cause drying,
cracking, or irritation.
POTENTIAL HEALTH EFFECTS
EYES:
Severe irritation and discomfort. Reversible and/or irreversible
corneal damage may occure.

SKIN: Moderate irritation and discomfort. Defatting of skin and redness
are possible. Toxic systemic effects from absorbtion are expected to be
minor.
INGESTION: May cause Nausea, Diarrhea, Vomitting, Inebriation
(Drunkeness), Difficulty breathing, Headache, Coma
INHALATION: Dizziness, impaired coordination, headaches and loss of
consciousness. Severe respiratory tract irritation. Toxic systemic effects
are possible.
CHRONIC:
Prolonged or repeated exposure may cause the following effects:
Dermatitis and skin defatting; conjuctivitis; inflammation of the
respiratory tract, weakness, drowsiness; Liver and Kidney Damage;
Clinical Neuropathy
MEDICAL CONDITIONS AGGRAVATED: Persons with
Chronic respiratory or Skin diseases. Persons with a history of Peripheral
Neuropathy.
ROUTES OF ENTRY: Absorption, Inhalation, Ingestion
TARGET ORGAN STATEMENT: CNS depressent
4. FIRST AID MEASURES
EYES: Immediately flush eyes with plenty of water for 15 minutes. If
irritation persists, seek medical attention.
SKIN: Remove contaminated clothing, wash contaminated area
thoroughly with soap and water. If redness or irritation occurs, seek
medical attention.
INGESTION: Do not Induce Vomiting. Get immediate medical
attention.
INHALATION: Remove victim from area of exposure. If unconscious,
give oxygen. Give artificial respiration if not breathing. Get immediate
medical attention.
5. FIRE FIGHTING MEASURES
FLASHPOINT AND METHOD: (16°F)
FLAMMABLE LIMITS: 1.4 to 11.4
AUTOIGNITION TEMPERATURE: (759°F)
FLAMMABLE CLASS: Treat as an OSHA Class IB Flammable
liquid
EXTINGUISHING MEDIA: Foam, Dry Chemical, Carbon Dioxide,
Water Fog
FIRE FIGHTING PROCEDURES: Treat as highly
flammable/explosive vapor solvent. Vapor is heavier than air and may

travel to ignition sources and flashback. Keep unignited containers cool
with water. Contaminated fire control waters should be diked or collected
in ponds if possible and disposed of properly. Use eye and skin protections
and self-contained breathing apparatus.
FIRE FIGHTING EQUIPMENT: Respiratory and eye protection
are required for fire fighting personnel. Full protective equipment (Bunker
Gear) and self contained breathing apparatus (SCBA) should be used for
all indoor fires and any significant outdoor fires. For small outdoor fires,
which may easily be extinguished with a portable fire extinguisher, use of
a SCBA may not be required.
6. ACCIDENTAL RELEASE MEASURES
SMALL SPILL:
Extinguish all ignition sources and ventilate area. Evacuate all non-
essential personnel. Blanket spill with alcohol resistant foam to limit
evaporation. Dike area to contain spill and clean up by absorbing on inert
absorbent or by other means. Liquid may be flammable even when mixed
with water unless heavily diluted (>5:1). Do not flush into sewers or
natural waterways.
LARGE SPILL:
Contain material as described above and call the local fire or police
department for immediate emergency assistance.
7. HANDLING AND STORAGE
HANDLING:
Open container slowly to relieve any pressure. Bond and ground all
equipment when transferring from one vessel or container to another. This
material can accumulate static charge by flow or agitation. Vapors can be
ignited by static discharge. Use explosion proof equipment as directed by
local fire codes.
STORAGE:
Store unopened containers under cool, dry and ventilated conditions. Keep
away from heat, sparks and flame.
8. EXPOSURE CONTROLS / PERSONAL
PROTECTION
EXPOSURE GUIDELINES:

OSHA HAZARDOUS COMPONENTS (29 CFR 1910.1200)
EXPOSURE LIMITS
OSHA PEL ACGIH TLV Supplier OEL
ppm mg/m
3
ppm mg/m
3
ppm mg/m
3
2-Butanone TWA 200 200
STEL 300
ENGINEERING CONTROLS: If current ventilation practices are not
adequate to maintain airborne concentrations below the established exposure
guidelines, additional ventilation or exhaust systems may be required. Where
explosive mixtures may be present, electrical systems safe for such locations must
be used.
PERSONAL PROTECTIVE EQUIPMENT
EYES AND FACE:
Wear safety glasses with side shields or goggles
when handling this material.
SKIN: To prevent any contact, wear impervious protective clothing such
as neoprene or butyl rubber gloves, apron, boots or whole bodysuit, as
appropriate.
RESPIRATORY: Use NIOSH/MSHA approved respirators when
vapors or mist concentrations exceed permissible exposure limits.
PROTECTIVE CLOTHING: Chemical resistant boots, apron, etc. as
necessary to prevent contamination of clothing and skin contact.
9. PHYSICAL AND CHEMICAL PROPERTIES
PHYSICAL STATE: Liquid
ODOR: Sweet, Pungent odor
APPEARANCE: Clear
COLOR: Colorless
pH: Not Available
PERCENT VOLATILE: 100
VAPOR PRESSURE: 100 mmHg at 25°C
VAPOR DENSITY: 2.5 (Air=1)
BOILING POINT: (176°F)
FREEZING POINT: (-123°F)
SOLUBILITY IN WATER: Partially Soluble
EVAPORATION RATE: 2.7 (n-Butyl Acetate=1)
SPECIFIC GRAVITY: 0.81 (water=1) at 20°C
MOLECULAR FORMULA: C4H8O
MOLECULAR WEIGHT: 72.12 8018OML6
10. STABILITY AND REACTIVITY

STABLE: YES
HAZARDOUS POLYMERIZATION: NO
CONDITIONS TO AVOID: Exposure to excessive heat, open flames
and sparks. Avoid conditions that favor the formation of excessive mists
and/or fumes.
STABILITY: Stable
POLYMERIZATION: Will not occur
HAZARDOUS DECOMPOSITION PRODUCTS: Oxides of
Carbon when burned.
INCOMPATIBLE MATERIALS: Strong oxidizing agents.
11. TOXICOLOGICAL INFORMATION
ACUTE
DERMAL LD
50
: 6400 mg/kg (rabbit)
ORAL LD
50
: 2737 mg/kg (rat)
INHALATION LC
50
: 23500 (mg/m3) Rat
CARCINOGENICITY:
IARC:
Not listed by IARC
NTP: Not listed by NTP.
OSHA: Not listed by OSHA
12. ECOLOGICAL INFORMATION
ECOTOXICOLOGICAL INFORMATION: No data available.
CHEMICAL FATE INFORMATION: No Data at this time.
13. DISPOSAL CONSIDERATIONS
DISPOSAL METHOD: Conditions of use may cause this material to
become a hazardous waste as defined by state or federal law. Use
approved treatment, transporters and disposal sites.
EMPTY CONTAINER: Keep containers closed when not in use. Do
not reuse empty containers.
14. TRANSPORT INFORMATION
DOT (DEPARTMENT OF TRANSPORTATION)
PROPER SHIPPING NAME:
Methyl Ethyl Ketone
PRIMARY HAZARD CLASS/DIVISION: 3
UN/NA NUMBER: UN1193

PACKING GROUP: II
LABEL: Flammable Liquid
15. REGULATORY INFORMATION
UNITED STATES
SARA TITLE III (SUPERFUND AMENDMENTS AND
REAUTHORIZATION ACT)
311/312 HAZARD CATEGORIES:
FIRE: YES PRESSURE GENERATING: NO REACTIVITY: NO
ACUTE: YES CHRONIC: NO
313 REPORTABLE INGREDIENTS: Yes – Methyl Ethyl Ketone
CERCLA (COMPREHENSIVE RESPONSE, COMPENSATION,
AND LIABILITY ACT)
CERCLA REGULATORY:
Sec. 103 – Yes; RQ = 5000 lbs.
CERCLA RQ: 5000 lbs.
TSCA (TOXIC SUBSTANCE CONTROL ACT)
TSCA REGULATORY:
This material or its components are listed in
the TSCA inventory.
PROPOSITION 65 STATEMENT: Not Listed
16. OTHER INFORMATION
REVISION SUMMARY
Revision #: 1
This MSDS replaces the December 26, 2000 MSDS. Any changes in information
are as follows:
In Section 1
Prepared By
NFPA CODES
HEALTH: 2 FIRE: 3 REACTIVITY: 0
HMIS CODES
HEALTH: -2 FIRE: 3 REACTIVITY: 0 PROTECTION: X
MANUFACTURER DISCLAIMER: The information in this MSDS was
obtained from sources which we believe are reliable. However, the above
information is provided without warranty, expressed or implied, regarding its
correctness. The conditions or methods if handling, storage, use and disposal of
the product are beyond our control and may be beyond our knowledge. For this

and other reasons, we do not assume responsibilty and expressly dislcaim liability
for loss, damage or expense arising out of or in any way connected with the
handling, storage, use or disposal of the procuct.