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

                                                                                                    3011

                              1,4-BIS(TRIMETHYLSILYL)-1,3-BUTADIYNE



CHEMICAL NAME & SYNONYMS                                                 DOT CLASS     SARA TITLE 313

1,4-Bis(trimethylsilyl)-1,3-butadiyne                                    4.1/II        No

                                                                         TSCA listed - No



FORMULA                             REPORTABLE QUANTITY                  F.W.          CAS#

(CH 3) 3SiC/CC/CCSi(CH 3) 3                 N/A                          194.43        4526-07-2



PHYSICAL DATA

Melting point 113°C; Density 0.752; Reacts with water.



APPEARANCE & ODOR

White to off-white crystals.



REACTIVITY & CONDITIONS TO AVOID

Stable. Will react with water and moist air. Incompatible with acids, bases and oxidizing

agents. Refrigeration recommended.



FIRE HAZARDS

Flammable solid, 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.                          Not known     Not known



HEALTH HAZARDS

The HEALTH RISKS of this product HAVE NOT BEEN FULLY DETERMINED. Avoid contact with skin and

eyes. Avoid breathing vapor. 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 as

described at 40 CFR 720.36. No LD/TD data found. OSHA PEL/ACGIH TLV not established. 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 if rash should occur. 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.



SPECIAL PRECAUTIONS

Goggles, rubber gloves, protective clothing are required. Use only with adequate ventilation

and/or suitable respiratory protection. Avoid all contact. Refrigeration is recommended.



SPILLS & LEAKS

Ventilate area. Equip personnel with SCBA and full protective clothing. Take up spill in

absorbent and dispose to incinerator or other suitable hazardous waste. Wash spill area

thoroughly with water after absorbent is picked up.





CATALOG #                                                      PREPARED BY                   DATE

3011                                                               MDM                  October 14, 2005