GFS CHEMICALS, INC.

                                      P.O. Box 245 Powell, OH 43065

                                   740-881-5501(Tel.) 740-881-5989(Fax)

                                   1-800-424-9300(Chemtrec 24Hr. Info.)



                                  MATERIAL SAFETY DATA SHEET

                                                                                                     3344

                                  4-TRIMETHYLSILYL-3-BUTYN-2-ONE



CHEMICAL NAME & SYNONYMS                                                  DOT CLASS     SARA TITLE 313

4-Trimethylsilyl-3-butyn-2-one                                            3/6.1/II      No

                                                                          TSCA listed - No



FORMULA                              REPORTABLE QUANTITY                  F.W.          CAS#

(CH 3) 3SiC/CCOCH 3                          N/A                          140.26        5930-98-3



PHYSICAL DATA

Boiling point 156°C; Density 0.838.



APPEARANCE & ODOR

Clear, colorless to light yellow liquid.



REACTIVITY & CONDITIONS TO AVOID

Stable. Incompatible with strong oxidizing materials.



FIRE HAZARDS

Flammable liquid. Will emit toxic fumes of carbon monoxide carbon dioxide and silicon dioxide.

Firefighters wear SCBA.



EXTINGUISHER                                                              FLASHPOINT    LEL   UEL

CO 2, ABC dry powder, foam, water spray or fog.                           28°C          Not known



HEALTH HAZARDS

Vapor and liquid irritating to skin, eyes and mucous membranes. The health risks of this product

have not been fully determined. Expect to be harmful by inhalation, ingestion, or skin

absorption. This product must only be used under conditions of prudent laboratory practice as

described at 40 CFR 720.36. This product is supplied solely for use in research and development

by or under the supervision of a technically qualified individual, who should be fully cognizant

of the procedures for working with chemical products of this type. No LD/TD data found. OSHA

PEL/ACGIH TLV not established. This material is not a listed carcinogen. It DOES NOT indicate

absence of carcinogenicity.



FIRST AID

Remove contaminated clothing immediately and launder before reuse. Discard contaminated shoes.

For eyes, flush with plenty of water for at least fifteen minutes. Seek medical attention

immediately. For skin, wash thoroughly with soap and water, while removing clothing. Seek

medical attention. For inhalation, remove to fresh air. If not breathing give mouth to mouth

resuscitation. If breathing is difficult, give oxygen. Seek medical attention at once. For

ingestion, seek medical attention at once.



SPECIAL PRECAUTIONS

Wear goggles, rubber gloves, protective clothing. Use only with adequate ventilation and/or

suitable respiratory protection. Avoid all contact.



SPILLS & LEAKS

Ventilate area. Equip personnel with respirator. Take up spill in absorbent and dispose to

incinerator or other suitable hazardous waste.





CATALOG #                                                       PREPARED BY                   DATE

3344                                                                MDM                    April 23, 2007



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