H226:Flammable liquid and vapour
H315:Causes skin irritation
H319:Causes serious eye irritation
H335:May cause respiratory irritation
P261:Avoid breathing dust/fume/gas/mist/vapours/spray
P305+P351+P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses if present
and easy to do – continue rinsing

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Section3. Composition/information on ingredients.
Ingredient name:4-Mercapto-4-methylpentan-2-one
CAS number:19872-52-7

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Section4. First aid measures
Skin contact:Immediately wash skin with copious amounts of water for at least 15 minutes while removing
contaminated clothing and shoes. If irritation persists, seek medical attention.
Eye contact:Immediately wash skin with copious amounts of water for at least 15 minutes. Assure adequate
?ushing of the eyes by separating the eyelids with ?ngers. If irritation persists, seek medical
attention.
Inhalation:Remove to fresh air. In severe cases or if symptoms persist, seek medical attention.
Ingestion:Wash out mouth with copious amounts of water for at least 15 minutes. Seek medical attention.

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Section5. Fire ?ghting measures
In the event of a ?re involving this material, alone or in combination with other materials, use dry
powder or carbon dioxide extinguishers. Protective clothing and self-contained breathing apparatus
should be worn.

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Section6. Accidental release measures
Personal precautions: Wear suitable personal protective equipment which performs satisfactorily and meets local/state/national
standards.
Respiratory precaution:Wear approved mask/respirator
Hand precaution:Wear suitable gloves/gauntlets
Skin protection:Wear suitable protective clothing
Eye protection:Wear suitable eye protection
Methods for cleaning up: Mix with sand or similar inert absorbent material, sweep up and keep in a tightly closed container
for disposal. See section 12.
Environmental precautions: Do not allow material to enter drains or water courses.

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Section7. Handling and storage
Handling:This product should be handled only by, or under the close supervision of, those properly quali?ed
in the handling and use of potentially hazardous chemicals, who should take into account the ?re,
health and chemical hazard data given on this sheet.
Storage:Store in closed vessels.

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Section8. Exposure Controls / Personal protection
Engineering Controls: Use only in a chemical fume hood.
Personal protective equipment: Wear laboratory clothing, chemical-resistant gloves and safety goggles.
General hydiene measures: Wash thoroughly after handling. Wash contaminated clothing before reuse.

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Section9. Physical and chemical properties
Appearance:Not speci?ed
No data
Boiling point:
Melting point:No data
Flash point:No data
Density:No data
Molecular formula: C6H12OS
Molecular weight: 132.2

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Section10. Stability and reactivity
Conditions to avoid: Heat, ?ames and sparks.
Materials to avoid: Oxidizing agents.
Possible hazardous combustion products: Carbon monoxide, sulfur oxides.

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Section11. Toxicological information
No data.

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Section12. Ecological information
No data.

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Section13. Disposal consideration
Arrange disposal as special waste, by licensed disposal company, in consultation with local waste
disposal authority, in accordance with national and regional regulations.

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Section14. Transportation information
UN Number:UN3336 Class: 3 Packing group: III
Proper shipping name: MERCAPTANS, LIQUID, FLAMMABLE, N.O.S. OR MERCAPTAN MIXTURE, LIQUID, FLAMMABLE
N.O.S. (4-Mercapto-4-methylpentan-2-one)

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Section15. Regulatory information
No chemicals in this material are subject to the reporting requirements of SARA Title III, Section
302, or have known CAS numbers that exceed the threshold reporting levels established by SARA
Title III, Section 313.

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SECTION 16 - ADDITIONAL INFORMATION
N/A