**** SECTION 1 - CHEMICAL PRODUCT AND COMPANY IDENTIFICATION ****

MSDS Name: Tellurium, Pieces, 99.999%
Catalog Numbers:
    AC194180000, AC194180200
Synonyms:
    Telloy.
Company Identification (Europe):  Acros Organics BVBA
                                 Janssen Pharmaceuticalaan 3a
                                 2440 Geel, Belgium
Company Identification (USA):     Acros Organics
                                 One Reagent Lane
                                 Fairlawn, NJ  07410
For information in North America, call:   800-ACROS-01
For information in Europe, call:          0032(0) 14575211
For emergencies in the US, call CHEMTREC: 800-424-9300
For emergencies in Europe, call:     0032(0) 14575299

         **** SECTION 2 - COMPOSITION, INFORMATION ON INGREDIENTS ****

+----------------+--------------------------------------+----------+-----------+
|      CAS#      |              Chemical Name           |    %     |  EINECS#  |
|----------------|--------------------------------------|----------|-----------|
|    13494-80-9  |Tellurium                             |  99.999  | 236-813-4 |
+----------------+--------------------------------------+----------+-----------+
         Hazard Symbols: T
         Risk Phrases: 25

                 **** SECTION 3 - HAZARDS IDENTIFICATION ****

                              EMERGENCY OVERVIEW
Toxic if swallowed.

Potential Health Effects
    Eye:
         May cause eye irritation.
    Skin:
         May cause skin irritation. Contact with the skin may cause skin
         lesions which are characterized by cracking of the skin and the
         development of slow-healing ulcers.
    Ingestion:
         Poison by ingestion. May cause headache. May cause nausea and
         vomiting. May cause garlic smell on the breath and body.
    Inhalation:
         Inhalation of high concentrations may cause central nervous system
         effects characterized by nausea, headache, dizziness, unconsciousness
         and coma. May cause respiratory tract irritation. Inhalation may be
         fatal as a result of spasm, inflammation, edema of the larynx and
         bronchi, chemical pneumonitis and pulmonary edema.
    Chronic:
         Adverse reproductive effects have been reported in animals. Exposure
         to large doses may cause central nervous system depression.

                   **** SECTION 4 - FIRST AID MEASURES ****

    Eyes:
         Immediately flush eyes with plenty of water for at least 15 minutes,
         occasionally lifting the upper and lower eyelids. Get medical aid.
    Skin:
         Get medical aid. Immediately flush skin with plenty of soap and
         water for at least 15 minutes while removing contaminated clothing
         and shoes. Wash clothing before reuse.
    Ingestion:
         Do NOT induce vomiting. If victim is conscious and alert, give 2-4
         cupfuls of milk or water. Never give anything by mouth to an
         unconscious person. Get medical aid immediately. Wash mouth out with
         water.
    Inhalation:
         Remove from exposure to fresh air immediately. If breathing is
         difficult, give oxygen. Get medical aid. Do NOT use mouth-to-mouth
         resuscitation. If breathing has ceased apply artificial respiration
         using oxygen and a suitable mechanical device such as a bag and a
         mask.
    Notes to Physician:

                 **** SECTION 5 - FIRE FIGHTING MEASURES ****

    General Information:
         As in any fire, wear a self-contained breathing apparatus in
         pressure-demand, MSHA/NIOSH (approved or equivalent), and full
         protective gear. During a fire, irritating and highly toxic gases
         may be generated by thermal decomposition or combustion. Containers
         may explode when heated. Non-combustible, substance itself does not
         burn but may decompose upon heating to produce irritating, corrosive
         and/or toxic fumes. Runoff from fire control or dilution water may
         cause pollution.
    Extinguishing Media:
         Do NOT get water inside containers. Do NOT use straight streams of
         water. For small fires, use dry chemical, carbon dioxide, or water
         spray. Cool containers with flooding quantities of water until well
         after fire is out. For large fires, use water spray, fog or regular
         foam.

               **** SECTION 6 - ACCIDENTAL RELEASE MEASURES ****

    General Information: Use proper personal protective equipment as indicated
                         in Section 8.
    Spills/Leaks:
         Vacuum or sweep up material and place into a suitable disposal
         container. Avoid runoff into storm sewers and ditches which lead to
         waterways. Clean up spills immediately, observing precautions in the
         Protective Equipment section. Avoid generating dusty conditions.
         Provide ventilation. Do not get water inside containers.

                  **** SECTION 7 - HANDLING and STORAGE ****

    Handling:
         Wash thoroughly after handling. Use with adequate ventilation.
         Minimize dust generation and accumulation. Follow all MSDS and label
         precautions even after container is emptied because they may contain
         product residues. Do not breathe dust, vapor, mist, or gas. Do not
         get in eyes, on skin, or on clothing. Keep container tightly closed.
         Use only in a chemical fume hood.
    Storage:
         Store in a cool, dry, well-ventilated area away from incompatible
         substances. Keep containers tightly closed.

         **** SECTION 8 - EXPOSURE CONTROLS, PERSONAL PROTECTION ****

    Engineering Controls:
         Facilities storing or utilizing this material should be equipped
         with an eyewash facility and a safety shower. Use adequate
         ventilation to keep airborne concentrations low.
    Personal Protective Equipment

                Eyes:
                      Wear appropriate protective eyeglasses or chemical
                      safety goggles as described by OSHA's eye and face
                      protection regulations in 29 CFR 1910.133 or European
                      Standard EN166.
                Skin:
                      Wear appropriate protective gloves to prevent skin
                      exposure.
            Clothing:
                      Wear appropriate protective clothing to prevent skin
                      exposure.
         Respirators:
                      Follow the OSHA respirator regulations found in 29CFR
                      1910.134 or European Standard EN 149. Always use a
                      NIOSH or European Standard EN 149 approved respirator
                      when necessary.

            **** SECTION 9 - PHYSICAL AND CHEMICAL PROPERTIES ****

Physical State:             Powder
Appearance:                 grey - white powder
Odor:                       odorless
pH:                         Not available.
Vapor Pressure:             1 mm Hg @520 deg C
Vapor Density:              Not available.
Evaporation Rate:           Not available.
Viscosity:                  Not available.
Boiling Point:              989.8 deg C
Freezing/Melting Point:     449.5 deg C
Autoignition Temperature:   Not applicable.
Flash Point:                Not applicable.
Explosion Limits, lower:    Not available.
Explosion Limits, upper:    Not available.
Decomposition Temperature:
Solubility:                 insoluble
Specific Gravity/Density:   6.11-6.27
Molecular Formula:          Te
Molecular Weight:           127.60

                **** SECTION 10 - STABILITY AND REACTIVITY ****

    Chemical Stability:
         Stable at room temperature in closed containers under normal storage
         and handling conditions. Slowy tarnishes in air.
    Conditions to Avoid:
         Incompatible materials, ignition sources, dust generation, excess
         heat.
    Incompatibilities with Other Materials:
         Zinc, strong acids, strong bases, oxidizing agents, active metals,
         halogens.
    Hazardous Decomposition Products:
         Irritating and toxic fumes and gases.
    Hazardous Polymerization: Will not occur.

               **** SECTION 11 - TOXICOLOGICAL INFORMATION ****

    RTECS#:
         CAS# 13494-80-9: WY2625000
    LD50/LC50:
         CAS# 13494-80-9: Inhalation, rat: LC50 = >2420 mg/m3/4H; Oral,
         mouse: LD50 = 20 mg/kg; Oral, rabbit: LD50 = 67 mg/kg; Oral, rat:
         LD50 = 83 mg/kg.
    Carcinogenicity:
      Tellurium -
         Not listed by ACGIH, IARC, NIOSH, NTP, or OSHA.
    Epidemiology:
         Experimental reproductive effects have been reported.
    Teratogenicity:
         No information available.
    Reproductive Effects:
         Reproductive effects have occurred in experimental animals.
    Neurotoxicity:
         No information available.
    Mutagenicity:
         No information available.
    Other Studies:
         See actual entry in RTECS for complete information. The
         toxicological properties have not been fully investigated.

                 **** SECTION 12 - ECOLOGICAL INFORMATION ****



                **** SECTION 13 - DISPOSAL CONSIDERATIONS ****

Dispose of in a manner consistent with federal, state, and local regulations.

                 **** SECTION 14 - TRANSPORT INFORMATION ****

    US DOT
         No information available
    Canadian TDG
         No information available.

                 **** SECTION 15 - REGULATORY INFORMATION ****

US FEDERAL
    TSCA
         CAS# 13494-80-9 is listed on the TSCA inventory.
         This material does not contain any Class 2 Ozone depletors.
    Clean Water Act:
         None of the chemicals in this product are listed as Hazardous
         Substances under the CWA.
         None of the chemicals in this product are listed as Priority
         Pollutants under the CWA.
         None of the chemicals in this product are listed as Toxic Pollutants
         under the CWA.
    OSHA:
         None of the chemicals in this product are considered highly hazardous
         by OSHA.
STATE
    Tellurium can be found on the following state right to know lists:
    California, New Jersey, Florida, Pennsylvania, Minnesota,
    Massachusetts.
    California No Significant Risk Level:
    None of the chemicals in this product are listed.
European/International Regulations
    European Labeling in Accordance with EC Directives
         Hazard Symbols: T
         Risk Phrases:
                      R 25  Toxic if swallowed.
         Safety Phrases:
                      S 22  Do not breathe dust.
                      S 24/25  Avoid contact with skin and eyes.
  WGK (Water Danger/Protection)
         CAS# 13494-80-9: No information available.
  United Kingdom Occupational Exposure Limits
         CAS# 13494-80-9: OES-United Kingdom, TWA 0.1 mg/m3 TWA

  Canada
         CAS# 13494-80-9 is listed on Canada's DSL List.
         CAS# 13494-80-9 is listed on Canada's Ingredient Disclosure List.
  Exposure Limits
         CAS# 13494-80-9: OEL-AUSTRALIA:TWA 0.1 mg/m3
         OEL-BELGIUM:TWA 0.1 mg/m3
         OEL-DENMARK:TWA 0.1 mg/m3
         OEL-FINLAND:TWA 0.1 mg/m3;STEL 0.3 mg/m3
         OEL-FRANCE:TWA 0.1 mg/m3
         OEL-GERMANY:TWA 0.1 mg/m3
         OEL-THE NETHERLANDS:TWA 0.1 mg/m3
         OEL-THE PHILIPPINES:TWA 0.1 mg/m3
         OEL-SWEDEN:TWA 0.1 mg/m3
         OEL-SWITZERLAND:TWA 0.1 mg/m3;STEL 0.5 mg/m3 JAN9
         OEL-TURKEY:TWA 0.1 mg/m3
         OEL-UNITED KINGDOM:TWA 0.1 mg/m3
         OEL IN BULGARIA, COLOMBIA, JORDAN, KOREA check ACGIH TLV
         OEL IN NEW ZEALAND, SINGAPORE, VIETNAM check ACGI TLV

                 **** SECTION 16 - ADDITIONAL INFORMATION ****

    MSDS Creation Date:  4/13/1999  Revision #2 Date:  8/02/2000

    The information above is believed to be accurate and represents the best
    information currently available to us. However, we make no warranty of
    merchantability or any other warranty, express or implied, with respect to
    such information, and we assume no liability resulting from its use. Users
    should make their own investigations to determine the suitability of the
    information for their particular purposes. In no way shall the company be
    liable for any claims, losses, or damages of any third party or for lost
    profits or any special, indirect, incidental, consequential or exemplary
    damages, howsoever arising, even if the company has been advised of
    the possibility of such damages.
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