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

MSDS Name: Rhenium, powder, 99.99%
Catalog Numbers:
    AC193860000, AC193860010
Synonyms:
    None.
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#  |
|----------------|--------------------------------------|----------|-----------|
|     7440-15-5  |Rhenium, powder                       |   99.9   | 231-124-5 |
+----------------+--------------------------------------+----------+-----------+
         Hazard Symbols: None Listed.
         Risk Phrases: 10

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

                              EMERGENCY OVERVIEW
Flammable.The toxicological properties of this material have not
been fully investigated.

Potential Health Effects
    Eye:
         May cause eye irritation.
    Skin:
         May cause skin irritation.
    Ingestion:
         May cause irritation of the digestive tract. The toxicological
         properties of this substance have not been fully investigated.
    Inhalation:
         May cause respiratory tract irritation. The toxicological properties
         of this substance have not been fully investigated. Vapors may cause
         dizziness or suffocation.
    Chronic:
         No information found.

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

    Eyes:
         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. Flush skin with plenty of soap and water for at
         least 15 minutes while removing contaminated clothing and shoes. Wash
         clothing before reuse.
    Ingestion:
         Never give anything by mouth to an unconscious person. Get medical
         aid. Do NOT induce vomiting. If conscious and alert, rinse mouth and
         drink 2-4 cupfuls of milk or water.
    Inhalation:
         Remove from exposure to fresh air immediately. If not breathing,
         give artificial respiration. If breathing is difficult, give oxygen.
         Get medical aid.
    Notes to Physician:
    Antidote:
         None reported.

                 **** 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. Will burn
         if involved in a fire. Use water spray to keep fire-exposed
         containers cool. Containers may explode in the heat of a fire.
    Extinguishing Media:
         For small fires, use dry chemical, carbon dioxide, water spray or
         alcohol-resistant foam. For large fires, use water spray, fog, or
         alcohol-resistant foam. Use water spray to cool fire-exposed
         containers. Water may be ineffective. Do NOT use straight streams of
         water.

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

    General Information: Use proper personal protective equipment as indicated
                         in Section 8.
    Spills/Leaks:
         Clean up spills immediately, observing precautions in the Protective
         Equipment section. Sweep up or absorb material, then place into a
         suitable clean, dry, closed container for disposal. Avoid generating
         dusty conditions. Remove all sources of ignition. Use a spark-proof
         tool. Provide ventilation.

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

    Handling:
         Wash thoroughly after handling. Remove contaminated clothing and
         wash before reuse. Use with adequate ventilation. Minimize dust
         generation and accumulation. Ground and bond containers when
         transferring material. Use spark-proof tools and explosion proof
         equipment. Avoid contact with eyes, skin, and clothing. Empty
         containers retain product residue, (liquid and/or vapor), and can be
         dangerous. Keep container tightly closed. Avoid contact with heat,
         sparks and flame. Avoid ingestion and inhalation. Do not pressurize,
         cut, weld, braze, solder, drill, grind, or expose empty containers
         to heat, sparks or open flames.
    Storage:
         Keep away from heat, sparks, and flame. Keep away from sources of
         ignition. Keep container closed when not in use. Store in a tightly
         closed container. Store in a cool, dry, well-ventilated area away
         from incompatible substances. Flammables-area.

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

    Engineering Controls:
         Use adequate general or local explosion-proof ventilation to keep
         airborne levels to acceptable levels.
    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
Odor:                       None reported.
pH:                         Not available.
Vapor Pressure:             Not available.
Vapor Density:              Not available.
Evaporation Rate:           Not available.
Viscosity:                  Not available.
Boiling Point:              5630 deg C @ 760.00mmHg
Freezing/Melting Point:     3180 deg C
Autoignition Temperature:   Not available.
Flash Point:                Not available.
Explosion Limits, lower:    Not available.
Explosion Limits, upper:    Not available.
Decomposition Temperature:
Solubility:                 insoluble
Specific Gravity/Density:
Molecular Formula:          Re
Molecular Weight:           186.20

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

    Chemical Stability:
         Stable under normal temperatures and pressures.
    Conditions to Avoid:
         Incompatible materials, ignition sources, dust generation, excess
         heat, strong oxidants.
    Incompatibilities with Other Materials:
         Oxidizing agents.
    Hazardous Decomposition Products:
         Carbon monoxide, irritating and toxic fumes and gases, carbon
         dioxide.
    Hazardous Polymerization: Has not been reported.

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

    RTECS#:
         CAS# 7440-15-5: VI0780000
    LD50/LC50:
         Not available.
    Carcinogenicity:
      Rhenium, powder -
         Not listed by ACGIH, IARC, NIOSH, NTP, or OSHA.
    Epidemiology:
         No information available.
    Teratogenicity:
         No information available.
    Reproductive Effects:
         No information available.
    Neurotoxicity:
         No information available.
    Mutagenicity:
         No information available.
    Other Studies:
         No data available.

                 **** 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
         Shipping Name: **SMALL QTY EXCEPTION SEE 49 CFR 173.4**
          Hazard Class: 110
             UN Number: UN0001
         Packing Group:
         Shipping Name: **SMALL QTY EXCEPTION SEE 49 CFR 173.4**
          Hazard Class: 110
             UN Number: UN0001
         Packing Group:
    Canadian TDG
         No information available.

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

US FEDERAL
    TSCA
         CAS# 7440-15-5 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
    Rhenium, powder is not present on state lists from CA, PA, MN, MA,
    FL, or NJ.
    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: Not available.
         Risk Phrases:
                      R 10  Flammable.
         Safety Phrases:
                      S 9  Keep container in a well-ventilated place.
                      S 16  Keep away from sources of ignition - No
                      smoking.
                      S 24/25  Avoid contact with skin and eyes.
                      S 28A  After contact with skin, wash immediately with
                      plenty of water.
                      S 33  Take precautionary measures against static
                      discharges.
                      S 37  Wear suitable gloves.
                      S 45  In case of accident or if you feel unwell, seek
                      medical advice immediately (show the label where
                      possible).
  WGK (Water Danger/Protection)
         CAS# 7440-15-5: 0
  United Kingdom Occupational Exposure Limits

  Canada
         CAS# 7440-15-5 is listed on Canada's DSL List.
         CAS# 7440-15-5 is not listed on Canada's Ingredient Disclosure List.
  Exposure Limits

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

    MSDS Creation Date:  3/31/1999  Revision #1 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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