Uranyl Benzoate SDS


Chemical Name: Uranyl Benzoate

Synonyms: Uranium Benzoate

Formula: UO2(C7H5O2)2

Description: Yellow Powder

Caution: Mild irritant to skin, eyes, and mucous membranes.

Use: Preserving foods, fats, fruit juices, etc.; manufacturing benzoates and benzoyl compounds, dyes; as a mordant in calico printing; for curing tobacco. As standard in volumetric and calorimetric analysis. Pharmaceutic aid (antifungal).

Therapy for Vets: Has been used with salicylic acid as a topical antifungal.


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Emergency Telephone Numbers


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

International contact number: 1-352-323-3500

Other Identifiers

Use and Restriction: This material is prepared for use at analytic laboratories, which routinely handle uranium. IBI Labs expects that recipients of this material comply with 29 CFR 1910.1200(h), which requires employers to provide employees with effective information and training on hazardous chemicals in their work area.


CAS RN: [532-60-5]

Formula: UO2(C7H5O2)2

RTECS Class: Other.

UN (DOT): 2910


US TSCA: Listed.

Australia AICS: Listed.

New Zealand: Listed.

Japan ENCS (MITI): Listed.

Philippines PICCS: Listed.


Molecular Formula: C14H10O6U

Formula Mass: 512.25

Melting Point °C: 110°C

Solubility in Water: Slightly soluble in water and alcohol.

Derivative Type: Uranium Salt.

Percent Composition: C 32.83%, H 1.97%, O 18.74%, U 46.47%

Reactions: May burn, but do not ignite readily



  • 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 and 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.

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.

Small spills and leaks:

  • Do not touch damaged packages or spilled material.
  • Cover liquid spill with sand, earth, or other noncombustible absorbent material.
  • Dike to collect large liquid spills.
  • Cover the powder spill with a plastic sheet or tarp to minimize spreading.


Fire: The presence of radioactive material will not influence the fire control processes and should not influence the selection of techniques.

  • Move containers from the fire area if you can do it without risk.
  • Do not move damaged packages.
  • Move undamaged packages out of the fire zone.

Small fires: Dry chemical, carbon dioxide, water spray, or regular foam.

Large fires: Water spray, fog (flooding amounts). Dike fire-control water for later disposal.

Fire potential: The material itself does not burn or burn with difficulty.

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.


  • Some of these materials may burn, but most do not ignite readily.
  • Uranium and Thorium metal cuttings may ignite spontaneously if exposed to air.
  • Extremely flammable; will ignite itself if exposed to air.
  • Burns rapidly, releasing dense, white, irritating fumes.
  • The substance may be transported in a molten form.
  • May reignite after the fire is extinguished.
  • Nitrates are oxidizers and may ignite other combustibles. May explode from heat or contamination. Some may burn rapidly; some will react explosively with hydrocarbons (fuels).
  • May ignite combustibles (wood, paper, oil, clothing, etc.).
  • Containers may explode when heated.
  • Runoff may create fire or explosion hazards.


Exposure Limits: OSHA PEL: 0.05 mg/m3

Exposure Effects: Supra-lethal radiation doses may result in headache, acute brain syndrome, alterations in mental status including coma, and (rarely) seizures within minutes of exposure. Prenatal ionizing radiation exposure may cause congenital anomalies, mental retardation, and an increased incidence of seizures.

Eyes: See Inhalation.

Ingestion: Gastrointestinal syndrome (nausea/vomiting) commonly occurs after doses of 9 to 20 gy and may occur following doses as low as 5 gy. Initial vomiting is followed by persistent diarrhea, which may be bloody.

Inhalation: Pulmonary radiation injury may result in radiation pneumonitis and radiation pulmonary fibrosis.

Skin: Thermonuclear burns may occur. If erythema is produced by penetrating radiation, serious systemic injury is certain.

First Aid

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.


  • Monitoring exposed patients for contamination and decontamination procedures should be started.
  • All personnel involved in handling patients should wear disposable protective clothing.
  • The patient should be completely undressed and given a soap and water bath or shower (if the patient’s condition permits and if the facility exists).
  • Acute inhalation of radionuclides presents some difficult problems.


UN Number: 2910

Response Guide: 162

Hazard Class: 7


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.


Copyright 2014 IBI Labs. License granted to make unlimited paper copies for internal use only.

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: 05/06/2024


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