EMS CATALOG NO:   50360-01

                                          EMS PRODUCT:      Alumina Powder

                                          DATE:             11/19/99

                                          PAGE NUMBER:      One of 4





                        MATERIAL SAFETY DATA SHEET



       The 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.





ELECTRON MICROSCOPY SCIENCES

321 MORRIS ROAD

P.O. BOX 251

FORT WASHINGTON, PA 19034          24 HOUR EMERGENCY PHONE NUMBER

(215) 646-1566                     CHEMTREC: (800) 424-9300

_________________________________________________________________



                FOR PRODUCT AND SALES INFORMATION

_________________________________________________________________



       CONTACT ELECTRON MICROSCOPY SCIENCES OFFICE ABOVE.



_________________________________________________________________



                      PRODUCT IDENTIFICATION

_________________________________________________________________



PRODUCT NAME:                 Alumina; aluminum oxide powder

                                (all types and micron sizes)



DESCRIPTION:     Polishing powder



______________________________________________________________________



                COMPOSITION/INFORMATION ON INGREDIENTS

______________________________________________________________________



NAME             CASE NUMBER       PERCENT     OSHA PEL        ACGIH TLV



Aluminum oxide    1344-28-1         100       10 mg/m3(total) 10mg/m3(total)

                                              5 mg/m3         5mg/m3

                                              (respirable)    (respirable)









______________________________________________________________________

                       HAZARDS IDENTIFICATION

______________________________________________________________________



EMERGENCY OVERVIEW:

     May create nuisance dust; may aggravate existing dermatitis.



POTENTIAL HEALTH EFFECTS

     EYE:       May cause minor irritation.

     SKIN:      May cause drying of the skin.

     INGESTION:      Not expected to be an ingestion hazard.

     INHALATION:     Excessive exposure may cause cough, mucous

                     production, and shortness of breath.



CHRONIC HEALTH EFFECTS/CARCINOGENICITY

     NTP, OSHA and IARC:      Not listed.

MEDICAL RESTRICTIONS:         None known.



______________________________________________________________________



                          FIRST-AID MEASURES

______________________________________________________________________



EYES:      Flush with water for 20 to 30 minutes while holding eyelids

           open. Obtain medical attention if irritation persists.

SKIN:      Wash with soap and water.

INGESTION:      Call a physician.

INHALATION:     Remove to fresh air. Call a physician if shortness of

                breath persists for more than 15 minutes.

______________________________________________________________________



                        FIRE FIGHTING MEASURES

______________________________________________________________________



FIRE FIGHTING:           Not applicable.

EXTINGUISHING MEDIA:        "    "

HAZARDOUS COMBUSTION PRODUCTS:     Not applicable.

FLASH POINT:                       Not applicable.

LOWER FLAMMABLE LIMIT:             Not applicable.

UPPER FLAMMABLE LIMIT:             Not applicable.

AUTOIGNITION:                      Not applicable.

CONDITIONS OF FLAMMABILITY:        Not applicable.



EXPLOSION DATA

     Impact sensitivity:      Not applicable.

     Static discharge:        Not applicable.



______________________________________________________________________



                    ACCIDENTAL RELEASE MEASURES

______________________________________________________________________



GENERAL:       Avoid generating dust.

SMALL SPILLS: Sweep or scoop up material.

LARGE SPILLS:    "        "         "

______________________________________________________________________

                         HANDLING AND STORAGE

______________________________________________________________________



HANDLING: Wear appropriate protection; use adequate ventilation.

STORAGE:

  Keep container closed when not in use. Store in a cool, dry place.



______________________________________________________________________



                EXPOSURE CONTROLS/PERSONAL PROTECTION

______________________________________________________________________



VENTILATION:    Use adequate ventilation to meet exposure limits.

RESPIRATORY PROTECTION: NIOSH-approved respirator.

EYE PROTECTION:      Splashproof goggles.

SKIN PROTECTION:     Rubber gloves.

OTHER:               Eye bath and safety shower should be available.



______________________________________________________________________



                   PHYSICAL AND CHEMICAL PROPERTIES

______________________________________________________________________



PHYSICAL STATE:          Solid in the form of a powder.

COLOR/ODOR:              White-odorless

SPECIFIC GRAVITY:        3.98, water=1

VAPOR PRESSURE:          1 mm Hg at 3917oF

VAPOR DENSITY:           Not listed.

EVAPORATION RATE:        Not applicable.

VOLATILE FRACTION BY

  WEIGHT:                Zero.

BOILING POINT:           5391oF

MELTING POINT:           3722oF

DYNAMIC VISCOSITY:       Not applicable.

KINEMATIC VISCOSITY:     Not applicable.

SOLUBILITY IN WATER:     Insoluble.

pH:                      Not applicable.

______________________________________________________________________



                       STABILITY AND REACTIVITY

______________________________________________________________________



STABILITY:          Stable.

REACTIVITY:         Unreactive.

INCOMPATIBILITY:    Not applicable.

HAZARDOUS POLYMERIZATION:      Will not occur.

DECOMPOSITION:            Not likely.







______________________________________________________________________



                        TOXOLOGICAL INFORMATION

______________________________________________________________________



ACUTE TOXICITY:     Oral - Inhalation - Dermal=Not listed.

______________________________________________________________________



                         DISPOSAL INFORMATION

______________________________________________________________________



RCRA HAZARDOUS WASTE:    Not defined as a hazardous waste under RCRA.

WASTE DISPOSAL:

     Ordinary solid waste methods is recommended, if permitted under

     Federal, State, and local regulations.

______________________________________________________________________



                      TRANSPORTATION INFORMATION

______________________________________________________________________



DOT HAZARD CLASS:        Not regulated.

PROPER SHIPPING NAME:     "     "

I.D. NUMBER:              "     "

______________________________________________________________________



                        REGULATORY INFORMATION

______________________________________________________________________



Federal EPA

     SARA TITLE III:     Listed on Section 313

     TSCA STATUS:        All ingredients of this product are on the

                         TSCA inventory.

     WHMIS CLASSIFICATION:    Not listed.



STATE RIGHT-TO-KNOW

     California-65:         Not listed.

     Florida:               Not listed.

     Massachusetts:         Not listed.

     New Jersey:            Not listed.

     Pennsylvania:          Aluminum oxide.



HMIS CODE:        Health=1       Flammability=0       Reactivity=0

             0=minimal hazard    1=slight hazard    2=moderate hazard

             3=serious hazard    4=extreme hazard



�