Thorium Dicarbide SDS


Name: Thorium Dicarbide

Formula: ThC2

CAS RN: [12071-31-7]


IBI Labs

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


  • Appearance: Yellow monoclinic crystals
  • Molecular Formula: C2Th
  • Molecular Weight: 256.060
  • Solubility: Decomposed in H2O, with evolution of ethane [KIR83]
  • Density, g/cm³: 9 g/cm³ (20 °C)
  • Melting Point, °C: 97°C
  • Boiling Point, °C: ~5000°C
  • Reactions: α to β transition at 1427°C, β to γ at 1497°C



  • Keep in a cool, dry, dark location, in a tightly sealed container or cylinder.
  • Keep away from incompatible materials, ignition sources, and untrained individuals.
  • Secure and label area.
  • Protect containers 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).

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.


Exposure Effects

Ingestion, skin, and eyes: See 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

General advice: In the case of an accident or if you feel unwell, seek medical advice immediately.


  • 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.


  • 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.


Radioactive material will not influence the fire control processes and selection of techniques.

  • 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.


Precautions for safe handling:

  • Avoid contact with skin, eyes, and clothing.
  • When using do not eat, drink, or smoke.
  • Avoid Breathing Dust.
  • Wash thoroughly after handling.
  • Use only with adequate ventilation.

Conditions for safe storage:

  • Store in the radioactive materials area.
  • Keep the storage container tightly closed.
  • Store separately from incompatible materials.
  • Observe all Federal, State, and local regulations regarding storage of this substance.

Personal Protective Equipment

Clothing, gloves, and eye protection equipment will protect against alpha particles, and some protection against beta particles, depending on thickness, but will not shield gamma radiation.

Eye protection: Employees must wear appropriate eye protection that will not allow the introduction of particles into the eyes. Contact lenses should not be worn.

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.

In an accident, large-scale release or a large-scale clean-up of full protective clothing will be necessary.

Gloves: Employees must wear appropriate protective gloves to prevent contact with this substance. Used gloves may present a radiation hazard and should be disposed of as radioactive waste.

The selection of appropriate gloves depends on the material, while the quality standards may vary among manufacturers.

Respirator: The following respirators and maximum use concentrations are recommendations by the U.S. Department of Health and Human Services, NIOSH pocket guide to chemical hazards; NIOSH criteria documents or by the U.S. Department of Labor, 29 CFR 1910 Subpart Z.

The specific respirator selected must be based on contamination levels found in the workplace, must not exceed the working limits of the respirator, and be jointly approved by the National Institute for Occupational Safety and Health and the Mine Safety and Health Administration (NIOSH-MSHA).

Exposure controls

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.

For 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.


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.


The U.S. Department of Transportation (D.O.T.) Code of Federal Regulations (49 CFR Parts 100- 185), the International Air Transportation Association (IATA), the International Civil Aviation Organization (ICAO), and the International Maritime Organization (IMDG) are all factored into the classification and transport of material.

Proper Shipping Name:

Hazard Class:

UN/ID Number:                              To be determined on a case-by-case basis.

Special Information:

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.


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: 07/03/2024


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