Page 1 Date: Aug. 3, 1995



                         SAINT-GOBAIN CRYSTALS

                       MATERIAL SAFETY DATA SHEET





PRODUCT: BC-531                                 EMERGENCY PHONE NO.

                                                (440) 564-2251

                      SECTION 1 SUPPLIER INFORMATION



COMMON NAME                 : BC-531

CHEMICAL NAME                : Liquid Scintillator

FORMULA                     : Mixture

PRODUCT CAS #               : Proprietary

SUPPLIER                    : SAINT-GOBAIN CRYSTALS

ADDRESS                     : 12345 KINSMAN ROAD

CITY/STATE/ZIP               : NEWBURY, OH 44065

PHONE                       :(440)564-2251

TELEFAX                     :(440)564-8047

         SECTION II HAZARDOUS INGREDIENT INFORMATION



                                                                   TLV-ACGIH

                                         %WT. PEL-OSHA

INGREDIENT

                                                                   Not determined

                                               95 Not determined

Linear Alkylbenzene

Pseudocumene                                    5 Not determined   25ppm

Fluors                                        <.3 Not determined   Not determined





INGREDIENT HAZARD STATEMENT

NOTE: N/A









        SECTION III PHYSICAL/CHEMICAL CHARACTERISTICS



                                   : >400°F

BOILING POINT

SPECIFIC GRAVITY (H20=1)           : .87

MELTING POINT                      : N/A

                                   : <0.5mm

VAPOR PRESSURE (mmHg)

VAPOR I)FNSITV (air=1)

                                                                 Page 2 Date: Aug. 3, 1995

MATERIAL SAFETY DATA SHEET



EVAPORATION RATE (BUTYL ACETATE=1): <0.1

  SOLUBILITY/WATER:





 APPEARANCE AND ODOR: Clear, blue fluorescent

                         oily liquid, aromatic odor





                  SECTION IV FIRE AND EXPLOSION HAZARD DATA



FLASH POINT: 199°F, TOL

AUTO-IGNITION: Not determined

LEL: 0.6%

UEL: <7%

NFPA HAZARD CLASSIFICATION



 HEALTH: 1                FLAMMABLE: 2           REACTIVITY: 0



HMIS HAZARD CLASSIFICATION



 HEALTH: 1            FLAMMABLE: 2             REACTIVITY: 0

EXTINGUISHING MEDIA: Foam, dry chemical, water spray





SPECIAL FIRE FIGHTING PROCEDURES: Wear self-contained breathing apparatus, use water

      spray - aqueous forming foam combination.





UNUSUAL FIRE AND EXPLOSION HAZARDS: Heat, sparks, strong oxidizers



                             SECTION V REACTIVITY DATA

STABILITY: N/A

AVOID





INCOMPATIBILITY:         Strong oxidizers





HAZARDOUS DECOMPOSITION OR BY-PRODUCTS: Carbon monoxide, asphyxiants





POLYMERIZATION: Will not occur





AVOID:

MATERIAL SAFETY DATA SHEET                                     Page 3 Date: Aug. 3, 1995



                       SECTION VI HEALTH HAZARD DATA

ROUTES OF ENTRY



EYES: Yes SKIN: Yes                INHALATION: Yes         INGESTION: Yes



EFFECTS OF OVEREXPOSURE





   EYE:        Slight irritation



   SKIN:       Not a known skin irritant. Prolonged exposure may cause contact dermatitis.



   INHALATION: Mist or high vapor concentration may cause irritation to the upper respiratory



   tract.



   INGESTION: May cause gastrointestinal irritation, diarrhea, and nausea.





NOTE:







CARCINOGENICITY:



NTP: N/A        IARC: N/A          OSHA: N/A



CHRONIC HEALTH HAZARD: Not determined







MEDICAL CONDITIONS GENERALLY AGGRAVATED BY EXPOSURE:



    In high concentrations, disorders of the skin, eyes, and respiratory system may be aggravated.



EMERGENCY FIRST AID



EYE AND SKIN CONTACT: Flush eyes for at least 15 minutes. If irritation persists, seek medical

    attention.



INHALATION: Move to fresh air. Get medical attention.







INGESTION: ASPIRATION HAZARD! DO NOT INDUCE VOMITING! Should vomiting occur,

material may enter the lungs and result in chemical pneumonia. Get medical attention immediately!

MATERIAL SAFETY DATA SHEET                                     Page 4 Date: Aug. 3, 1995



           SECTION VII PRECAUTIONS FOR SAFE HANDLING AND USE



EPA: WASTE #: None

UN #: None

DOT CLASSIFICATION: None



STEPS TO BE TAKEN IN CASE MATERIAL IS RELEASED OR SPILLED: Stop leak, clean up spilled

   material







WASTE DISPOSAL METHOD: Check state, federal and local regulations.









PRECAUTIONS TO BE TAKEN IN HANDLING AND STORAGE: Class II storage.

   Containers should be grounded when pouring.







                          SECTION VIII CONTROL MEASURES







RESPIRATORY PROTECTION: Use an approved respirator if needed.







VENTILATION:          General ventilation, local exhaust if needed.





PROTECTIVE EQUIPMENT: Wear chemically resistant gloves for prolonged or repeated exposures, and

   chemical splash goggles.





WORK/HYGIENE PRACTICES: Always wash hands after handling.

MATERIAL SAFETY DATA SHEET                          Page 5 Date: Aug. 3, 1995



                SECTION IX FEDERAL AND STATE REGULATIONS



SARA HAZARD CATEGORIES



                                         YES [ ]    NO [ X ]

IMMEDIATE (ACUTE) HEALTH HAZARD:



                                                    NO [ X ]

DELAYED (CHRONIC) HEALTH HAZARD:         YES [ ]

FIRE HAZARD: YES [ ] NO [ X ]



REACTIVITY HAZARD: YES [ ] NO [ X ]



SUDDEN RELEASE OF PRESSURE: YES [ ] NO [ X ] SARA



SECTION 313 NOTIFICATION: N/A





THIS PRODUCT MAY CONTAIN A TOXIC CHEMICAL (OR CHEMICALS) SUBJECT TO THE

REPORTING REQUIREMENTS OF SECTION 313 TITLE III OF THE SUPERFUND AMENDMENTS AND



REAUTHORIZATION ACT OF 1986 AND 40 CFR PART 372.



CHEMICAL NAME:                        CAS #                %WT.









INFORMATION PRESENTED HEREIN HAS BEEN COMPILED FROM SOURCES CONSIDERED TO BE

DEPENDABLE, AND IS ACCURATE AND RELIABLE TO THE BEST OF OUR KNOWLEDGE AND

BELIEF, BUT IS NOT GUARANTEED TO BE SO. SINCE CONDITIONS OF USE ARE BEYOND OUR

CONTROL, WE MAKE NO WARRANTIES, EXPRESSED OR IMPLIED, EXCEPT THOSE THAT MAY BE

CONTAINED IN OUR WRITTEN CONTRACT OF SALE OR ACKNOWLEDGMENT.