SAFETY DATA SHEET. Creation Date 04-Jun-2010 Revision Date 26-Nov-2018 Revision Number 1. Terbium Oxide 4N; Tervbium Oxide 3N

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1 SAFETY DATA SHEET Creation Date 04-Jun-2010 Revision Number 1 Product Name 1. Identification Cat No. : CAS-No Synonyms Terbium Oxide 4N; Tervbium Oxide 3N Recommended Use Uses advised against Laboratory chemicals. Food, drug, pesticide or biocidal product use Details of the supplier of the safety data sheet Company Alfa Aesar Thermo Fisher Scientific Chemicals, Inc. 30 Bond Street Ward Hill, MA Tel: Fax: tech@alfa.com Emergency Telephone Number During normal business hours (Monday-Friday, 8am-7pm EST), call (800) After normal business hours, call Carechem 24 at (866) Hazard(s) identification Classification Classification under 2012 OSHA Hazard Communication Standard (29 CFR ) Based on available data, the classification criteria are not met Label Elements None required Hazards not otherwise classified (HNOC) None identified 3. Composition/Information on Ingredients Component CAS-No Weight % Page 1 / 6

2 Terbium oxide (Tb4O7) First-aid measures Eye Contact Skin Contact Inhalation Ingestion Most important symptoms and effects Notes to Physician Suitable Extinguishing Media Unsuitable Extinguishing Media Flash Point Method - Rinse immediately with plenty of water, also under the eyelids, for at least 15 minutes. Get medical attention. Wash off immediately with soap and plenty of water while removing all contaminated clothes and shoes. Obtain medical attention. Remove from exposure, lie down. Move to fresh air. If not breathing, give artificial respiration. Obtain medical attention. Do not induce vomiting. Never give anything by mouth to an unconscious person. Drink plenty of water. Clean mouth with water. Get medical attention. If possible drink milk afterwards. Treat symptomatically 5. Fire-fighting measures Carbon dioxide (CO 2). Dry chemical. Use extinguishing measures that are appropriate to local circumstances and the surrounding environment. Chemical foam. Autoignition Temperature Explosion Limits Upper Lower Sensitivity to Mechanical Impact Sensitivity to Static Discharge Specific Hazards Arising from the Chemical Keep product and empty container away from heat and sources of ignition. Hazardous Combustion Products Thermal decomposition can lead to release of irritating gases and vapors Protective Equipment and Precautions for Firefighters As in any fire, wear self-contained breathing apparatus pressure-demand, MSHA/NIOSH (approved or equivalent) and full protective gear. Thermal decomposition can lead to release of irritating gases and vapors. NFPA Health 0 Flammability 0 Instability 1 Physical hazards N/A Personal Precautions Environmental Precautions 6. Accidental release measures Ensure adequate ventilation. Use personal protective equipment. See Section 12 for additional ecological information. Methods for Containment and Clean Sweep up or vacuum up spillage and collect in suitable container for disposal. Up 7. Handling and storage Page 2 / 6

3 Handling Storage Exposure Guidelines Avoid contact with skin and eyes. Do not breathe dust. Avoid contact with clothing. Remove and wash contaminated clothing before re-use. Do not ingest. Wash thoroughly after handling. Keep in a dry, cool and well-ventilated place. Keep container tightly closed. 8. Exposure controls / personal protection This product does not contain any hazardous materials with occupational exposure limitsestablished by the region specific regulatory bodies. Engineering Measures None under normal use conditions. Personal Protective Equipment Eye/face Protection Skin and body protection Respiratory Protection Hygiene Measures Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR or European Standard EN166. Wear appropriate protective gloves and clothing to prevent skin exposure. No protective equipment is needed under normal use conditions. Handle in accordance with good industrial hygiene and safety practice. 9. Physical and chemical properties Physical State Powder Solid Appearance Dark brown Odor Odorless Odor Threshold ph Melting Point/Range Boiling Point/Range Flash Point Evaporation Rate Flammability (solid,gas) Flammability or explosive limits Upper Lower Vapor Pressure Vapor Density Specific Gravity Solubility Partition coefficient; n-octanol/water Autoignition Temperature Decomposition Temperature Viscosity Molecular Formula O7 Tb4 Molecular Weight Stability and reactivity Reactive Hazard Stability Conditions to Avoid None known, based on information available Stable under normal conditions. Air sensitive. Hygroscopic. Incompatible products. Exposure to moisture. Page 3 / 6

4 Incompatible Materials Strong oxidizing agents, Strong acids, Powdered metals Hazardous Decomposition Products Thermal decomposition can lead to release of irritating gases and vapors Hazardous Polymerization Hazardous Reactions Acute Toxicity None under normal processing. 11. Toxicological information Product Information No acute toxicity information is available for this product Component Information Toxicologically Synergistic Products Delayed and immediate effects as well as chronic effects from short and long-term exposure Irritation Sensitization Carcinogenicity The table below indicates whether each agency has listed any ingredient as a carcinogen. Component CAS-No IARC NTP ACGIH OSHA Mexico Terbium oxide (Tb4O7) Not listed Not listed Not listed Not listed Not listed Mutagenic Effects Reproductive Effects Developmental Effects Teratogenicity STOT - single exposure STOT - repeated exposure Aspiration hazard Symptoms / effects,both acute and delayed Endocrine Disruptor Information Other Adverse Effects Ecotoxicity Do not empty into drains. Persistence and Degradability Bioaccumulation/ Accumulation Mobility Waste Disposal Methods None known None known The toxicological properties have not been fully investigated. 12. Ecological information Insoluble in water Is not likely mobile in the environment due its low water solubility. 13. Disposal considerations Chemical waste generators must determine whether a discarded chemical is classified as a Page 4 / 6

5 hazardous waste. Chemical waste generators must also consult local, regional, and national hazardous waste regulations to ensure complete and accurate classification. DOT TDG IATA IMDG/IMO 14. Transport information 15. Regulatory information International Inventories Component TSCA DSL NDSL EINECS ELINCS NLP PICCS ENCS AICS IECSC KECL Terbium oxide (Tb4O7) X - X X - - X Legend: X - Listed E - Indicates a substance that is the subject of a Section 5(e) Consent order under TSCA. F - Indicates a substance that is the subject of a Section 5(f) Rule under TSCA. N - Indicates a polymeric substance containing no free-radical initiator in its inventory name but is considered to cover the designated polymer made with any free-radical initiator regardless of the amount used. P - Indicates a commenced PMN substance R - Indicates a substance that is the subject of a Section 6 risk management rule under TSCA. S - Indicates a substance that is identified in a proposed or final Significant New Use Rule T - Indicates a substance that is the subject of a Section 4 test rule under TSCA. XU - Indicates a substance exempt from reporting under the Inventory Update Rule, i.e. Partial Updating of the TSCA Inventory Data Base Production and Site Reports (40 CFR 710(B). Y1 - Indicates an exempt polymer that has a number-average molecular weight of 1,000 or greater. Y2 - Indicates an exempt polymer that is a polyester and is made only from reactants included in a specified list of low concern reactants that comprises one of the eligibility criteria for the exemption rule. U.S. Federal Regulations TSCA 12(b) SARA 313 SARA 311/312 Hazard Categories CWA (Clean Water Act) Clean Air Act See section 2 for more information OSHA Occupational Safety and Health Administration CERCLA California Proposition 65 U.S. State Right-to-Know Regulations This product does not contain any Proposition 65 chemicals U.S. Department of Transportation Reportable Quantity (RQ): DOT Marine Pollutant DOT Severe Marine Pollutant N N N U.S. Department of Homeland Security This product does not contain any DHS chemicals. Page 5 / 6

6 Other International Regulations Mexico - Grade Prepared By Creation Date Revision Date Print Date Revision Summary 16. Other information Health, Safety and Environmental Department tech@alfa.com 04-Jun Nov Nov-2018 Initial Release. Disclaimer The information provided in this Safety Data Sheet is correct to the best of our knowledge, information and belief at the date of its publication. The information given is designed only as a guidance for safe handling, use, processing, storage, transportation, disposal and release and is not to be considered a warranty or quality specification. The information relates only to the specific material designated and may not be valid for such material used in combination with any other materials or in any process, unless specified in the text End of SDS Page 6 / 6