MATERIAL SAFETY DATA SHEET





                                    MAGNESIUM OXIDE SINGLE CRYSTAL



Advanced Composite Materials, LLC                                   Telephone Numbers:

1446 S. Buncombe Road

Greer, South Carolina 29651                                         Technical:   864-877-0123



Issued: 01/31/08      Supercedes: 08/15/06                          Emergency:   1-800-457-4280 (Infotrac)



I.                                                GENERAL



Trade Names: Magnesium Oxide Single Crystal: All Designations

Other Name: MgO Single Crystal, Magnesia

Generic Name: Magnesium Oxide

Chemical Family: Metal Carbide/Metal Oxide                                 CAS No.: See Section II

DOT Hazardous Material Proper Shipping Name: Not regulated                 DOT Hazard Class: Not regulated

NFPA Rating: Health      0       Flammability _ 0 _   Reactivity _ 0 _     UN/NA ID NO.: N/AP



II.                                         HAZARDOUS INGREDIENTS



                                             CARCINOGEN a EXPOSURE LIMIT

NAME                      CAS #         %



                                                                           10 mg/m3 TWA (as fume)

Magnesium Oxide         1309-48-4 100%            N/P          OSHA PEL :

                                                                             respirable: 5 mg/m3 TWA (as dust)

                                                               ACGIH TLV : 10 mg/m3 TWA (as fume)

                                                                    ®   ®



a. Listing Agencies: 1 = NTP, National Toxicology Program

                     2 = IARC, International Agency for Research on Cancer

                     3 = ACGIH®, American Conference of Governmental Industrial Hygienists

                     4 = OSHA, Occupational Safety and Health Administration

                     5 = Other



III.                                PHYSICAL/CHEMICAL CHARACTERISTICS



Boiling Point: N/AP                                         Specific Gravity (Water = 1): 3.65

Vapor Pressure (mm Hg): N/AP                                Melting Point: 2800°

                                                                               C

Vapor Density (Air = 1): N/AP                               pH: N/AP

Solubility in Water: Insoluble                              Evaporation Rate (Butyl Acetate = 1): N/AP

Appearance and Odor: Translucent to white crystal as thin wafers or rectangular shapes, with no odor.



IV.                                   FIRE AND EXPLOSION HAZARD DATA



Flash Point (Method): Non-flammable by conventional test methods.

Auto Ignition Temp. (Method): N/AP

Flammable Limits: Non-flammable               Lower (LEL): N/AP            Upper (UEL): N/AP

Fire and Explosion Hazards: None. Inorganic, non-explosive.

Extinguishing Media: Use extinguishing media appropriate for surrounding materials.

MSDS: MAGNESIUM OXIDE SINGLE CRYSTAL                                                                                            Page 2 of 2





V.                                                         REACTIVITY DATA



Stability: Stable.

           Conditions to Avoid: None.

Incompatibility (Materials to Avoid): None (Long term contact with moisture will cause surface to become

         cloudy, a non-hazardous condition).

Hazardous Polymerization: Will not occur.

         Conditions to Avoid: N/AP



VI.                                                        HEALTH HAZARDS



Physical Hazards: None

Acute or Chronic Effects: None



Effects of Overexposure: No harm via inhalation, skin absorption or eye contact when handling single crystal

           material. During grinding and finishing, skin contact with grinding dust may cause drying and

           roughness or irritation to persons with sensitive skin. No effect to normal skin.

Emergency First Aid Procedures: First, wash the affected skin area with water. If skin irritation continues,

        apply an ointment or cream to the skin.



VII.                                       PRECAUTIONS FOR SAFE HANDLING AND USE



Steps to be Taken in Case Material is Released or Spilled: Collect materials for re-use or disposal. To

minimize dust generation, wet down spillage with low velocity fine mist water spray.



Waste Disposal Method: Dispose in accordance with all federal, state, county and local jurisdiction solid

waste regulations.



VIII.                                                      CONTROL MEASURES



Respiratory Protection: None under normal conditions of use.



Eye Protection: Wear safety goggles during dry grinding.



Skin Protection: Wear rubber gloves during polishing or grinding.



Ventilation: Ventilate work area to remove dust produced during polishing or grinding.



Other Hygienic and Work Practices: Wear NIOSH/OSHA approved nuisance dust respirator when polishing

or grinding produces dust.



                                         EQ = Equal                   AP = Approximately            N/P = No Applicable Information Found

 - - - NOTE - - - QUALIFICATIONS         LT = Less Than               UK = Unknown                  N/AP = Not Applicable

                                         GT = Greater Than            TR = Trace                    N/DA = No Data Available





The information in this MSDS was obtained from sources that we believe are reliable. HOWEVER, THE INFORMATION IS PROVIDED WITHOUT ANY

WARRANTY, EXPRESS OR IMPLIED, REGARDING ITS CORRECTNESS.

The conditions or methods of handling, storage, use and disposal of the product are beyond our control and may be beyond our knowledge. FOR THIS

AND OTHER REASONS, WE DO NOT ASSUME RESPONSIBILITY AND EXPRESSLY DISCLAIM LIABILITY FOR LOSS, DAMAGE OR EXPENSE

ARISING OUT OF OR IN ANY WAY CONNECTED WITH THE HANDLING, STORAGE, USE OR DISPOSAL OF THE PRODUCT.

This MSDS was prepared and is to be used only for this product. If the product is used as a component in another product, this MSDS information may

not be applicable.