SECTION 1: IDENTIFICATION
Product Name: Thorium Acetate
Synonyms: Thorium tetraacetate
CAS Number: 13075-28-0
Recommended Use: Laboratory chemical, research Restrictions on Use: For use by 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 2)
Specific Target Organ Toxicity – Repeated Exposure (Category 2) (kidneys, liver)
Hazardous to Aquatic Environment (Chronic Category 2)
Signal Word: Danger
Hazard Statements:
H301: Toxic if swallowed
H330: Fatal if inhaled
H373: May cause damage to organs through prolonged or repeated exposure
H411: Toxic to aquatic life with long lasting effects
Precautionary Statements:
P260: Do not breathe dust
P264: Wash thoroughly after handling
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
P391: Collect spillage P405: Store locked up
P501: Dispose of contents in accordance with regulations
Pictogram
Other Hazards:
Radioactive material (alpha emitter); internal exposure hazard
SECTION 3: COMPOSITION/INFORMATION ON INGREDIENTS
Substance: Thorium acetate
CAS: 13075-28-0
Formula: Th(C2H3O2)4
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 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: Water spray, foam, dry chemical, CO2
Hazards: Thermal decomposition may produce toxic fumes (thorium oxides, carbon oxides)
Protective Equipment: SCBA required
SECTION 6: ACCIDENTAL RELEASE MEASURES
Precautions: Avoid dust, wear PPE
Methods: Collect material without generating dust; use HEPA vacuum if possible
Radiological: Notify radiation safety personnel
SECTION 7: HANDLING AND STORAGE
Handling: Avoid inhalation and ingestion; use containment (glovebox/fume hood)
Storage: Store in tightly closed container 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 PPE: NIOSH-approved respirator (P100/N100), gloves, lab coat, eye protection
Radiation: Follow 10 CFR Part 20 limits
SECTION 9: PHYSICAL AND CHEMICAL PROPERTIES
Appearance: Yellow crystalline solid Molecular
Weight: 472.25 Density: 2.89 g/cm³
Decomposition Temperature: ~275°C
Solubility: Moderately soluble in water
SECTION 10: STABILITY AND REACTIVITY
Stability: Stable under recommended conditions
Incompatible Materials: Strong oxidizers Hazardous
Decomposition: Thorium oxides, carbon oxides
SECTION 11: TOXICOLOGICAL INFORMATION
Routes: Inhalation, ingestion
Effects: Nephrotoxicity, radiological hazard
Carcinogenicity: Not classified chemically; ionizing radiation is carcinogenic
SECTION 12: ECOLOGICAL INFORMATION
Toxic to aquatic organisms; long-term hazard
SECTION 13: DISPOSAL CONSIDERATIONS
Dispose in accordance with NRC/EPA radioactive waste regulations
SECTION 14: TRANSPORT INFORMATION
UN Number: UN2910/2912 (depending on activity). To be determined on a case-by-case basis.
Transport classification depends on quantity, physical form, and regulatory jurisdiction.
Hazard Class: 7 (Radioactive)
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 NRC: Licensed radioactive material
TSCA: Listed
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: 04/14/2026
