1. IDENTIFICATION
Product Identifier
Name: Thorium Hydride
Other Name: Thorium(II) hydride
Formula: ThH3
Supplier
IBI Labs
3495 N. Dixie Hwy. Unit # 8
Boca Raton, FL 33431
Tel: 561-826-0061 Fax: 561-892-8450
Emergency Telephone Numbers
INFOTRAC
USA & Canada contact number: 1-800-535-5053
International contact number: 1-352-323-3500
2. REGISTRY NUMBERS AND INVENTORIES
CAS RN: [140004-84-0]
NIH PubChem CID: 20431665
UN (DOT): 2910
Beilstein/Gmelin: 169600 (G)
3. PROPERTIES
- Molecular Formula: H3Th
- Formula Mass: 235.06188
- Appearance: Gray to black crystals
- Melting point, °C: 113°C – 114°C
- Boiling point, °C: 75 – 80 (1 torr)
- Density: 9.5 g/cm3
4. HAZARDS AND PROTECTION
Hazards
Emergency Overview: This may cause skin irritation and dermatitis.
Principle route of exposure: Skin.
Inhalation: This may irritate the respiratory tract.
Ingestion: May be harmful if swallowed.
Skin contact: This may cause allergic skin reactions.
Eye contact: Avoid contact with eyes.
Statements of hazard: May cause an allergic skin reaction.
Storage:
- Keep in a cool, dry, dark location in a tightly sealed container or cylinder.
- Use only in areas provided with appropriate exhaust ventilation.
- Keep away from incompatible materials, ignition sources, and untrained individuals.
- Secure and label area.
- Protect containers/cylinders from physical damage.
Handling:
- All chemicals should be considered hazardous.
- Avoid direct physical contact.
- Use appropriate, approved safety equipment.
- Untrained individuals should not handle this chemical or its container.
- Handling should occur in a chemical fume hood.
Protection: Wear appropriate protective gloves, clothing, and goggles.
Respirators: Wear positive pressure self-contained breathing apparatus (SCBA).
Incompatible products: Oxidizing and spontaneously flammable products.
Spill or Leaks – ANSI Label
Eliminate all ignition sources. Absorb and contain spill with inert materials (e.g., sand, vermiculite). Then place it in an appropriate container.
For large spills, use water spray to disperse vapors, and flush the spill area. Prevent runoff from entering waterways or sewers.
Small spills and leaks:
- Do not touch damaged packages or spilled material.
- Cover liquid spill with sand, earth, or other noncombustible absorbent material.
- Cover the powder spill with a plastic sheet or tarp to minimize spreading.
- Contact the radiation safety officer.
Accidental Release Measures
Personal precautions: Use personal protective equipment.
Environmental precautions: Prevent products from entering drains.
Methods for cleaning up: Sweep up and shovel into suitable containers for disposal.
4. FIREFIGHTING
The presence of radioactive material will not influence the fire control processes and the selection of techniques.
Suitable extinguishing media: Use dry chemical, CO2, water spray, or “alcohol” foam.
- Small fires: Dry chemical, carbon dioxide, water spray, or regular foam.
- Large fires: Water spray, fog (flooding amounts).
Fire potential: May burn but does not ignite readily.
Specific hazards: Burning produces irritant fumes.
Special protective equipment for firefighters: As in any fire, wear self-contained breathing apparatus pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear.
Specific methods: Water mist may be used to cool closed containers.
NFPA rating
NFPA Health: 1
NFPA Flammability: 1
NFPA Reactivity: 0
5. HEALTH
Exposure Effects
Ingestion, Skin, and Eyes: See Inhalation.
Inhalation:
- There is minimal risk if the packaging remains intact.
- Package damage can result in a measurable release of radiation, but the risk is still low.
First Aid Measures
General advice: In the case of an accident or if you feel unwell, seek medical advice immediately.
Inhalation:
- Move to a well-ventilated area, preferably with fresh air.
- Apply artificial respiration if the patient is not breathing.
- Administer oxygen if breathing is difficult.
- See Ingestion.
Skin and Eyes:
- Immediately flush with running water for at least 20 minutes.
- See Ingestion.
Ingestion:
- Medical problems take priority over radiological concerns.
- Use first aid treatment according to the nature of the injury.
- Do not delay the care and transport of a seriously injured person.
6. EXPOSURE CONTROLS AND PERSONAL PROTECTION
At any detectable concentration: Any self-contained breathing apparatus with a full facepiece operated in a pressure-demand or other positive-pressure mode.
Any supplied-air respirator with a full facepiece operated in a pressure-demand or other positive-pressure mode or other positive-pressure mode with an auxiliary self-contained breathing apparatus operated in pressure-demand or other positive-pressure mode.
Escape – any air-purifying, full-facepiece respirator with a high-efficiency particulate filler.
Any appropriate escape-type, self-contained breathing apparatus.
Engineering measures: Ensure adequate ventilation.
Personal Protective Equipment
Respiratory protection: Breathing apparatus only if aerosol or dust is formed.
Hand protection: PVC or other plastic material gloves
Skin and body protection: Usual safety precautions while handling the product will provide adequate protection against this potential effect.
Eye protection: Safety glasses with side-shields
Hygiene measures: Handle following good industrial hygiene and safety practices.
7. STABILITY AND REACTIVITY
Stability: Stable under recommended storage conditions.
Polymerization: None under normal processing.
Hazardous decomposition products: Thermal decomposition can lead to the release of irritating gases and vapors such as carbon oxides.
Materials to avoid: Strong oxidizing agents.
Conditions to avoid: Exposure to air or moisture over prolonged periods.
Clothing: Employees handling radioactive substances should wear disposable overgarments, including head and foot coverings. These garments are also recommended even if the employee uses a “glove box” containment system. Certain clothing fibers may be useful in dosimetry so clothing should be kept.
Gloves: The selection of appropriate gloves depends on the material, while the quality standards may vary among manufacturers.
Firefighting and Other Immediately Dangerous to Life or Health Conditions
Use any self-contained breathing apparatus with a full facepiece respirator and a high-efficiency particulate filter.
Use any supplied air respirator with a full facepiece operated in a pressure-demand or other positive-pressure mode or other positive-pressure modes with an auxiliary self-contained breathing apparatus operated in pressure-demand or other positive-pressure modes.
8. TOXICOLOGICAL INFORMATION
Product Information
Acute toxicity:
Components RTECS Number: Selected LD50s and LC50s
Thorium Hydride: Not Available – Not Determined
Chronic toxicity:
Chronic exposure may cause nausea and vomiting, higher exposure causes unconsciousness.
Local effects: Symptoms of overexposure may be headache, dizziness, tiredness, nausea, and vomiting.
Specific effects: May include moderate to severe erythema (redness) and moderate edema (raised skin), nausea, vomiting, and headache.
Primary irritation: No data is available on the product itself.
Carcinogenic effects: No data is available on the product itself.
Mutagenic effects: No data is available on the product itself.
Reproductive toxicity: No data is available on the product itself.
9. ECOLOGICAL INFORMATION
Mobility: No data available.
Bioaccumulation: No data available.
Ecotoxicity effects: No data available.
Aquatic toxicity: May cause long-term adverse effects in the aquatic environment.
U.S. DOT – Appendix B -Marine Pollutant
U.S. DOT – Appendix B – Severe Marine Pollutants
United Kingdom – The Red List:
THORIUM HYDRIDE
Not Listed
Germany VCI (WGK)
World Health Organization (WHO) – Drinking Water
Ecotoxicity – Fish Species Data
THORIUM HYDRIDE
Not Listed
Ecotoxicity – Freshwater Algae Data
Ecotoxicity – Microtox Data Ecotoxicity – Water Flea Data
THORIUM HYDRIDE
Not Listed
EPA – ATSDR Priority List
EPA – HPV Challenge Program Chemical List
California – Priority Toxic Pollutants
THORIUM HYDRIDE
Not Listed
10. DISPOSAL CONSIDERATIONS
Waste from residues/unused products: Waste disposal must follow appropriate Federal, State, and local regulations. If unaltered, this product may be disposed of by treatment at a permitted facility or as advised by your local hazardous waste regulatory authority. Residue from fires extinguished with this material may be dangerous.
Contaminated packaging: Do not reuse empty containers and dispose of them as unused products.
Recommendations: Should not be disposed of with household garbage.
11. TRANSPORTATION
UN Number: 2910
Response Guide: 161
Hazard Class: 7
Packing Group:
The classification of substances with multiple hazards must be determined following the criteria presented in the regulations mentioned above. Due to the various quantities and combinations of materials being shipped at one time, the information above must be determined based on the characteristics of the specific shipment.
12. REGULATORY INFORMATION
International Inventories
U.S. regulations:
Components
California Proposition 65
Massachusetts Right to know List
New Jersey Right to Know List
Pennsylvania Right to Know List
THORIUM HYDRIDE
Not Listed
Inventory – United States TSCA – Sect. 8(b)
Not Listed
Components
THORIUM HYDRIDE
Canada DSL Inventory List –
Product name: THORIUM HYDRIDE
Not Listed
Components
Florida Substance List:
Rhode Island Right to Know List:
Illinois – Toxic Air Contaminants
Connecticut – Hazardous Air Pollutants
THORIUM HYDRIDE
Not Listed
Components
SARA 313 Emission Reporting/Toxic Release of Chemicals
CERCLA/SARA – Section 302 Extremely Haz
NTP: IARC: THORIUM HYDRIDE
Not Listed
SARA 313 Notification: The above is your notification as to the SARA 313 listing for this product(s) under Section 313 of Title III of the Superfund Amendments and Reauthorization Act of 1986 and 40 CFR Part 372. If you are unsure if you are subject to the reporting requirements of Section 313, or need more information, please call the EPA Emergency Planning and Community Right-To-Know Information Hotline: (800) 535-0202 or (202) 479-2499 (in Washington, DC or Alaska).
State Notification: The above information is your notice as to the Right-to-Know listings of the stated product(s). Individual states will list chemicals for a variety of reasons including, but not limited to, the compound’s toxicity; carcinogenic, tumorigenic, and reproductive hazards; and the compound’s environmental impact if accidentally released.
13. OTHER INFORMATION
Copyright 2014 IBI Labs. License granted to make unlimited paper copies for internal use only.
IBI Labs requires that those who receive their materials comply with 29 CFR 1910.1200(h), which mandates that employers provide employees with effective information and training about hazardous chemicals in their workplace.
The contents of this document are believed to be accurate as of the date of revision and are provided in good faith. However, it is recommended that recipients use this information as supplementary and exercise caution and judgment regarding its accuracy and suitability. Please note that IBI Labs cannot be held responsible for any damage, direct or indirect, that occurs because of using the information provided in this Safety Data Sheet.
IBI Labs makes no warranties, expressed or implied, including warranties of merchantability and fitness for a particular purpose. This information is provided without warranty, and any use of the product that does not conform to this Safety Data Sheet, or that is used in combination with any other product or process, is the user’s responsibility.
Revision Date: 07/10/2024
