SECTION 1: IDENTIFICATION
Product Name: Thorium Chloride
Synonyms: Thorium Tetrachloride, ThCl₄
CAS Number: 10026-89-1
Recommended Use: Laboratory chemical, research
Restrictions: For trained personnel only (radioactive material)
Supplier:
International Bio-Analytical Industries, Inc.
3495 N. Dixie Hwy., Unit 8
Boca Raton, FL 33431 USA
Tel: +1 561-826-0061
Fax: +1 561-892-8450
Emergency telephone:
INFOTRAC (USA & Canada): +1-800-535-5053
INFOTRAC (International): +1-352-323-3500
SECTION 2: HAZARD(S) IDENTIFICATION
GHS Classification
Acute Toxicity (Oral, Category 3)
Acute Toxicity (Inhalation, Category 3)
Specific Target Organ Toxicity – Repeated Exposure (Category 2)
Hazardous to Aquatic Environment (Chronic Category 2)
Signal Word: Danger
Hazard Statements
H301: Toxic if swallowed
H331: Toxic if inhaled
H373: May cause damage to organs (kidneys, liver) through prolonged or repeated exposure
H411: Toxic to aquatic life with long lasting effects
Pictogram
Precautionary Statements
P260: Do not breathe dust
P270: Do not eat, drink or smoke when using this product
P273: Avoid release to the environment
P284: Wear respiratory protection
P301+P310: IF SWALLOWED: Immediately call a POISON CENTER
P304+P340: IF INHALED: Remove person to fresh air and keep comfortable
P391: Collect spillage
P405: Store locked up
P501: Dispose of contents in accordance with regulations
Other Hazards
Radioactive material (alpha emitter)
Internal exposure may increase cancer risk
SECTION 3: COMPOSITION/INFORMATION ON INGREDIENTS
Substance: Thorium Chloride
CAS: 10026-89-1
Formula: ThCl₄
SECTION 4: FIRST-AID MEASURES
General: Immediate medical attention required
Inhalation: Move to fresh air; provide oxygen if needed
Skin Contact: Wash with soap and water
Eye Contact: Rinse cautiously with water for at least 15 minutes
Ingestion: Rinse mouth; do NOT induce vomiting
Symptoms: Kidney damage, respiratory irritation, radiological effects
SECTION 5: FIRE-FIGHTING MEASURES
Suitable Media: Dry chemical, CO₂, foam
Hazards: Thermal decomposition may produce hydrogen chloride gas and thorium oxides
Material is not flammable but may decompose
Protective Equipment: SCBA required
SECTION 6: ACCIDENTAL RELEASE MEASURES
Personal Precautions:
Avoid dust formation
Use respiratory protection
Evacuate area
Methods:
Collect using HEPA vacuum or non-dispersive methods
Place in sealed container
Radiological Controls: Notify radiation safety personnel
SECTION 7: HANDLING AND STORAGE
Handling: Use in fume hood or glovebox. Avoid inhalation and ingestion
Storage: Store tightly closed in dry, ventilated area. Store in designated radioactive materials area
SECTION 8: EXPOSURE CONTROLS/PERSONAL PROTECTION
OSHA PEL (Thorium compounds): 0.05 mg/m³ (TWA)
ACGIH TLV: 0.2 mg/m³ (TWA)
Engineering Controls:
Local exhaust ventilation
Containment systems
PPE:
NIOSH-approved respirator (P100/N100)
Gloves (nitrile or equivalent)
Lab coat / disposable protective clothing
Eye protection (safety glasses or face shield)
Radiation Protection:
Follow 10 CFR Part 20
Apply ALARA principles
SECTION 9: PHYSICAL AND CHEMICAL PROPERTIES
Appearance: White to gray crystalline solid
Odor: Odorless or slight acidic
Molecular Weight: 373.85
Density: ~4.6 g/cm³
Melting Point: ~770°C
Boiling Point: ~921°C
Solubility: Reacts with water (hydrolysis)
SECTION 10: STABILITY AND REACTIVITY
Stability: Stable under dry conditions
Reactivity: Hydrolyzes in moisture releasing HCl
Incompatible Materials: Water, strong oxidizers, strong bases
Hazardous Decomposition: Hydrogen chloride, Thorium oxides
SECTION 11: TOXICOLOGICAL INFORMATION
Routes of Exposure: Inhalation, ingestion
Effects: Nephrotoxicity (kidney damage). Respiratory toxicity. Radiological hazard
Carcinogenicity: Not classified chemically. Ionizing radiation is carcinogenic
SECTION 12: ECOLOGICAL INFORMATION
Toxic to aquatic organisms
Long-term environmental hazard
SECTION 13: DISPOSAL CONSIDERATIONS
Dispose in accordance with:
NRC radioactive waste regulations
Federal, state, and local laws
SECTION 14: TRANSPORT INFORMATION
UN Number: To be determined on a case-by-case basis.
Hazard Class: 7 (Radioactive Material)
Proper Shipping Name: Radioactive material
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.
SECTION 15: REGULATORY INFORMATION
OSHA: Hazardous
TSCA: Listed
NRC: Licensed radioactive material
SECTION 16: OTHER INFORMATION
Copyright © 2015 International Bio-Analytical Industries, Inc.
Permission is granted to make unlimited paper copies for internal use only.
International Bio-Analytical Industries, Inc. requires recipients of its materials to comply with 29 CFR 1910.1200(h), which mandates that employers provide employees with effective information and training on hazardous chemicals present in the workplace.
The information contained in this Safety Data Sheet is believed to be accurate as of the date of revision and is provided in good faith. However, this information is intended to serve as a guide only, and recipients are encouraged to exercise independent judgment regarding its accuracy, completeness, and suitability for their specific applications. International Bio-Analytical Industries, Inc., shall not be held liable for any direct or indirect damage resulting from the use of this information.
International Bio-Analytical Industries, Inc. makes no warranties, express or implied, including, but not limited to, warranties of merchantability or 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 sole responsibility of the user.
Revision Date: 03/25/2026
