Revision Date: 01/30/2023
Name: Thorium Hydride
Other Name: Thorium(II) hydride
3495 N. Dixie Hwy. Unit # 8
Boca Raton, FL 33431
Tel: 561-826-0061 Fax: 561-892-8450
Emergency Telephone Numbers
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)
- 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
Emergency overview: May cause skin irritation and dermatitis.
Principle route of exposure: Skin.
Inhalation: May cause irritation of respiratory tract.
Ingestion: May be harmful if swallowed.
Skin contact: May cause allergic skin reaction.
Eye contact: Avoid contact with eyes.
Statements of hazard: May cause an allergic skin reaction.
- Keep in a cool, dry, dark location in a tightly sealed container or cylinder.
- Use only in area 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.
- 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/or contain spill with inert materials (e.g., sand, vermiculite). Then place in appropriate container.
For large spills, use water spray to disperse vapors, flush 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 powder spill with plastic sheet or tarp to minimize spreading.
- Contact radiation safety officer.
Accidental Release Measures
Personal precautions: Use personal protective equipment.
Environmental precautions: Prevent product from entering drains.
Methods for cleaning up: Sweep up and shovel into suitable containers for disposal.
Presence of radioactive material will not influence the fire control processes and should not influence 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 Health: 1
NFPA Flammability: 1
NFPA Reactivity: 0
Ingestion, Skin, and Eyes: See Inhalation.
- Minimal risk if 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 accident or if you feel unwell, seek medical advice immediately.
- Move to a well-ventilated area, preferably with fresh air.
- Apply artificial respiration if 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.
- Medical problems take priority over radiological concerns.
- Use first aid treatment according to the nature of the injury.
- Do not delay care and transport of a seriously injured person.
6. EXPOSURE CONTROLS AND PERSONAL PROTECTION
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 in accordance with good industrial hygiene and safety practice.
7. STABILITY AND REACTIVITY
Stability: Stable under recommended storage conditions.
Polymerization: None under normal processing.
Hazardous decomposition products: Thermal decomposition can lead to 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.
8. TOXICOLOGICAL INFORMATION
Components RTECS Number: Selected LD50s and LC50s
Thorium Hydride: Not Available – Not Determined
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, 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:
Germany VCI (WGK)
World Health Organization (WHO) – Drinking Water
Ecotoxicity – Fish Species Data
Ecotoxicity – Freshwater Algae Data
Ecotoxicity – Microtox Data Ecotoxicity – Water Flea Data
EPA – ATSDR Priority List
EPA – HPV Challenge Program Chemical List
California – Priority Toxic Pollutants
10. DISPOSAL CONSIDERATIONS
Waste from residues/unused products: Waste disposal must be in accordance with appropriate Federal, State, and local regulations. This product, if unaltered by use, 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 hazardous.
Contaminated packaging: Do not re-use empty containers.
UN Number: 2910
Response Guide: 161
Hazard Class: 7
12. REGULATORY INFORMATION
California Proposition 65
Massachusetts Right to know List
New Jersey Right to Know List
Pennsylvania Right to Know List
Inventory – United States TSCA – Sect. 8(b)
Canada DSL Inventory List –
Product name: THORIUM HYDRIDE
Florida substance List:
Rhode Island Right to Know List:
Illinois – Toxic Air Contaminants
Connecticut – Hazardous Air Pollutants
SARA 313 Emission reporting/Toxic Release of Chemicals
CERCLA/SARA – Section 302 Extremely Haz
NTP: IARC: THORIUM HYDRIDE
SARA 313 Notification: The above is your notification as to the SARA 313 listing for this product(s) pursuant to 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 compounds toxicity; carcinogenic, tumorigenic and/or reproductive hazards; and the compounds environmental impact if accidentally released.
13. OTHER INFORMATION
IBI Labs expects that recipients of their material are in compliance with 29 CFR 1910.1200(h) which requires employers to provide employees with effective information and training on hazardous chemicals in their work area.
The information and recommendations set forth herein are presented in good faith and believed to be correct as of the revision date. However, recipients of this material should use this information only as a supplement to other information gathered by them and should make independent judgement of the suitability and accuracy of this information. IBI Labs will not be liable for any special, indirect, incidental, or consequential damages, including but not limited to, loss of any kind whatsoever resulting from the use of the information provided in this Safety Data Sheet. IBI
Labs expressly includes all warranties, expressed or implied, including warranties of merchantability and fitness for a particular purpose.
This information is furnished without warranty, and any use of the product not in conformance with this Safety Data Sheet, or in combination with any other product or process, is the responsibility of the user.