FED-STD-791D
a. Hygienic Precautions: Adequate ventilation. Physical examinations of exposed
personnel every six months including tests of visual function, careful neurologic
evaluation, and studies of kidney and liver function. Preclude from exposure those
individuals with diseases of eyes, liver, kidneys and lungs.
b. First Aid: Irrigate eyes with water. Wash contaminated areas of body with soap
and water. Hospitalize, and call a physician.
c Fire Precautions (In case of outbreak): Use dry chemical, alcohol foam, or carbon
dioxide, water spray may be ineffective as an extinguishing agent, but water should
be used to keep fire-exposed containers cool.
Spills: Absorb on paper. Evaporate on glass or iron dish in hood. Burn the paper.
042 Methyl ethyl ketone CH3COC2H5
Synonyms: Methyl Ethyl Ketone; 2-Butanone, MEK.
Life Hazard: Strongly anesthetic. Threshold limit value probably similar to that of ethyl
ether, 400 ppm. Wear self-contained breathing apparatus. Highly
dangerous upon exposure to heat or flame.
Flammability: Flammable; dangerous fire and explosion risk. Flash point (open cup)
-4C; ignition temperature 516C; flammable limits 2-10%.
Handling & Storage: Close tightly, store in cool place, and check intermittently for
leakage. Avoid fire. Preferably provide electrical equipment
with spark-resistant construction. Wear rubber gloves, protective
clothing, and face shield. Provide with general-purpose breathing
apparatus.
Emergency Treatment and Measures:
a. Hygienic Precautions: Adequate ventilation. Enforce adequate protective clothing.
Make annually physical examinations, including blood cell count. Preclude from
exposure those individuals with diseases of skin, blood, and central nervous
system.
b. First Aid: Flush eyes with water. Wash out contaminated areas of body with soap
and water. If swallowed, call a physician.
c. Fire Precautions (In case of outbreak): Use alcohol foam, powder, and carbon
dioxide extinguisher. Water spray is ineffective for extinguishing, but may help to
keep fire-exposed containers cool, and to guard fighters who attempt to stop
leakage by diffusing vapor of the leaked ketone if not flushed yet.
Spills:
Absorb on paper. Evaporate on a glass or iron dish in hood. Burn the paper.
043 Methyl orange NaOsS-N=N-N(CH3)2
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