Revision Date: 01/26/2023

1. PRODUCT IDENTIFICATION

Name: Thorium Acetylacetonate

Synonyms: 4-pentanedionato-o,o’)-tetrakis((sa-8-11’’11’’1’1’’’1’1’’’)-thoriu; Tetrakis(2,4-pentanedionato)thorium; Tetrakis(3,4-pentanedionato)thorium

Formula: Th(CH₃COCHCOCH₃)₄

CAS RN: [17499-48-8]

Chemical Family: Metal beta-diketone complexes.

Beilstein/Gmelin: 196552 (G)

NIH PubChem CID: 24181091

EC (EINECS/ELINCS): 241-506-3

Canada DSL/NDSL: NDSL

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Emergency Telephone Numbers

INFOTRAC

USA & Canada contact number: 1-800-535-5053

International contact number: 1-352-323-3500

2. COMPOSITION AND INFORMATION ON INGREDIENTS, PHYSICAL AND CHEMICAL PROPERTIES

• Molecular Formula: C20H28O8Th
• Percent: 100
• Molecular weight: 628.475
• Melting Point, °C: 168°C-169°C
• Vapor Pressure, mm_Hg: 2.9 – 3.5 (100°C)
• Density: 1.72-1.77 g/cm3
• Solubility: Slightly soluble in water
• ACGIH (TWA): 0.2mg/m3 (as U)
• OSHA (PEL): 0.25mg/m3 (as insoluble U)

3. HAZARDS IDENTIFICATION

• Toxic by inhalation and if swallowed.
• Irritating to skin, eyes, and respiratory tract.
• May cause cancer.

Primary routes of exposure: Ingestion and inhalation.

Skin and eye contact: Causes slight to mild irritation of the skin and eyes.

Inhalation:

• Toxic by inhalation.
• Irritating to the nose, mucous membranes, and respiratory tract.

Ingestion: Toxic if swallowed.

Acute Health Effects

• Toxic by inhalation and if swallowed.
• Irritating to skin, eyes, and respiratory tract.

Chronic Health Effects

• Prolonged exposure to dust at above regulatory levels may increase likelihood of radiation induced diseases because of alpha emission and radon gas.
• May increase risk of cancer of the skin and lymphatic system.

4. FIRST AID MEASURES

Eye exposure:

• Immediately flush the eyes with copious amounts of water for at least 20 minutes.
• A patient may need assistance in keeping their eye lids open.
• Get immediate medical attention.
• See ingestion.

Skin exposure:

• Wash the affected area with water.
• Immediately flush with running water for at least 20 minutes.
• Remove contaminated clothes if necessary.
• Seek medical assistance if irritation persists.
• See Ingestion.

Inhalation:

• Remove the patient to fresh air.
• Closely monitor the patient for signs of respiratory problems, such as difficulty in breathing, coughing, wheezing, or pain.
• Apply artificial respiration if patient is not breathing.
• Administer oxygen if breathing is difficult.
• Seek immediate medical assistance.
• See Ingestion.

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.
• Give the patient water (only if conscious).
• Induce vomiting (only if directed by medical personnel).

5. FIREFIGHTING

Presence of radioactive material will not influence the fire control processes and should not influence selection of techniques.

• Small fires: Dry chemical, carbon dioxide, water spray or regular foam.
• Large fires: Water spray, fog (flooding amounts).

Fire protection: May burn, but it does not ignite rapidly.

6. HANDLING AND STORAGE

Storage:

• 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/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: If ventilation is not available a respirator should be worn. The use of respirators requires a Respirator Protection Program to follow 29 CFR 1910.134. Wear positive pressure self-contained breathing apparatus (SCBA).

Ventilation: Material may form a fine dust. If possible, handle the material in an efficient fume hood.

Small spills and leaks: Minimal risk if packaging remains intact. Package damage can result in a measurable release of radiation, but the risk is still low.

• 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.

7. STABILITY AND REACTIVITY

Stability: Air and moisture stable.

Hazardous polymerization: No hazardous polymerization.

Conditions to avoid: None.

Incompatibility: Strong oxidizing agents.

Decomposition products: Carbon dioxide, carbon monoxide, organic vapors, metal oxides and carbonates.

8. TOXICOLOGICAL AND ECOLOGICAL EFFECTS

RTECS data: No information available in the RTECS files.

Carcinogenic effects: Carcinogen (as U).

Mutagenic effects: No data available.

Tetratogenic Effects: No data available.

Ecological Information: No data available.

9. DISPOSAL CONSIDERATIONS

Waste from residues and 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.

10. TRANSPORTATION

UN Number: 2910

Response Guide: 161

Hazard Class: 7

USCG CHRIS Code: RAD

11. 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.