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

MSDS Name: Thulium, Chip, 99.9%
Catalog Numbers:
    AC317790000, AC317790010
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#  |
|----------------|--------------------------------------|----------|-----------|
|     7440-30-4  |Thulium                               |  99.9%   | 231-140-2 |
+----------------+--------------------------------------+----------+-----------+
         Hazard Symbols: None Listed.
         Risk Phrases: None Listed.

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

                              EMERGENCY OVERVIEW
Moisture sensitive.Air sensitive.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.
    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. Get medical aid immediately. Flush skin with plenty
         of soap and water for at least 15 minutes while removing contaminated
         clothing and shoes.
    Ingestion:
         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:

                 **** 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.
    Extinguishing Media:
         Use agent most appropriate to extinguish fire. Do NOT get water
         inside containers. Use water spray, dry chemical, carbon dioxide, or
         appropriate foam.

               **** 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, then place into a suitable container for
         disposal. Avoid generating dusty conditions. Provide ventilation.
         Place under an inert atmosphere. Do not get water inside containers.

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

    Handling:
         Wash thoroughly after handling. Use with adequate ventilation. Avoid
         contact with eyes, skin, and clothing. Keep container tightly closed.
         Avoid ingestion and inhalation. Handle under an inert atmosphere.
         Store protected from air. Do not allow contact with water. Keep from
         contact with moist air and steam.
    Storage:
         Store in a tightly closed container. Store in a cool, dry,
         well-ventilated area away from incompatible substances. Do not expose
         to air. Store protected from moisture. Store under an inert
         atmosphere.

         **** 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:
                      A respiratory protection program that meets OSHA's 29
                      CFR :1910.134 and ANSI Z88.2 requirements or European
                      Standard EN 149 must be followed whenever workplace
                      conditions warrant a respirator's use.

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

Physical State:             Flakes
Appearance:                 silver white
Odor:                       none reported
pH:                         Not available.
Vapor Pressure:             Not available.
Vapor Density:              Not available.
Evaporation Rate:           Not available.
Viscosity:                  Not available.
Boiling Point:              1725 deg F
Freezing/Melting Point:     1545 deg F
Autoignition Temperature:   Not applicable.
Flash Point:                Not applicable.
Explosion Limits, lower:    Not available.
Explosion Limits, upper:    Not available.
Decomposition Temperature:
Solubility:
Specific Gravity/Density:   9.332g/cm3
Molecular Formula:          Tm
Molecular Weight:           168.93

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

    Chemical Stability:
         Stable at room temperature in closed containers under normal storage
         and handling conditions.
    Conditions to Avoid:
         Incompatible materials, moisture, exposure to air.
    Incompatibilities with Other Materials:
         Strong acids, halogens, moisture, air.
    Hazardous Decomposition Products:
         Irritating and toxic fumes and gases, thulium.
    Hazardous Polymerization: Has not been reported

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

    RTECS#:
         CAS# 7440-30-4 unlisted.
    LD50/LC50:
         Not available.
    Carcinogenicity:
      Thulium -
         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
         No information available
    Canadian TDG
         No information available.

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

US FEDERAL
    TSCA
         CAS# 7440-30-4 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
    Thulium 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:
         Safety Phrases:
                      S 24/25  Avoid contact with skin and eyes.
                      S 28A  After contact with skin, wash immediately with
                      plenty of water.
                      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# 7440-30-4: No information available.
  United Kingdom Occupational Exposure Limits

  Canada
         CAS# 7440-30-4 is listed on Canada's DSL List.
         CAS# 7440-30-4 is not listed on Canada's Ingredient Disclosure List.
  Exposure Limits

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

    MSDS Creation Date:  5/03/1999  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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