EMS C ALOG NO:

                             AT              14385

                                             Acceler at or

                      EMS PRODUC :

                                T

                      DAT E:                 05/18/98

                      PAG NUMBER:

                          E                  One of 3





              MAT ER I AL S AFET Y DAT A S HEET



   T he information contained herein is based on data considered

   accurate. However, no warranty is expressed or implied

   regarding the accuracy of these data or the results to be

   obtained from the use thereof.



   Electron Microscopy Sciences assumes no responsibility for

   personal injury or property damage to vendees, users or

   third parties caused by the material. Such vendees or users

   assume all risks associated with the use of the material.





ELEC RON MI C

     T        ROSCOPY SC ENC

                        I   ES

321 MORRI S ROAD

P.O. BOX 251

FORT WASHI NG ON, PA 19034

               T               24 HOUR EMER GENCY PHONE NUMB ER

                                    CHEMT R EC: (800) 424-9300

(215) 646-1566

_________________________________________________________________



                   FOR PRODUC AND SALES I NFORMAT I ON

                              T

    _________________________________________________________________



             CONT AC ELEC RON MI C

                    T    T        ROSCOPY SC ENC OFFI C ABOVE.

                                            I   ES     E



_________________________________________________________________



                         PRODUC I DENT I FI C I ON

                                T            AT

_________________________________________________________________



PRODUC NAME:

      T                        Accelerator



CHEMI C C

       AL OMPOSI T I ON:60% nn-di methyl p. toluidine

                        40% poly ethylene glycol

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                               T OXI C DAT A

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T he di methyl para toluidine is referred to in NI OSH toxic substance

directory. T he Accelerator itself should be regarded as toxic if

taken by mouth or via continual skin exposure. However, in the

concentration used in the final resin mix little toxic hazard exists,

especially since the concentrations are of the same order as those

used in dental resins cured in the mouth.

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                                HAZARDS

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   T he Accelerator is combustible. T he flash point of the Accelerator exceeds 120oC.



    Do not combine equal amounts of catalyzed resin and accelerator

as a high exotherm will result, with the potential for the curing

resin to fume or even boil. Do not add Accelerator to catalyzed resin

in an enclosed rigid container as pressure may increase within the

vessel causing its explosive rupture.

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                  REC OMMENDAT I ONS FOR SAFE HANDLI NG

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   Nn-di methyl p. toluidine is a strong organic base. Avoid

unnecessary contact with skin; wash hands after use with soap and warm

water. Apply a moisturizing cream after use if large amounts have

been spilled on the skin.



   Avoid contact with eyes. I f the eyes are contacted by the

material wash the eyes gently with distilled water for ten minutes and

have eyes examined by a doctor, preferably an eye specialist.

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                                DI SPOSAL

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    T he Accelerator should be disposed of as liquid toxic basic

waste. I t should not be combined with acids, peroxides or alpha

diketones. I t should not be disposed of down public sewers.









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