1050 Benson Way, Ashland, OR 97520

Toll Free (800) 638-2581 * Fax (541) 488-8313

E-Mail: sales@espimetals.com










Trade Name:      Cerium Fluoride                                                                          Chemical Formula:          CeF3

Synonyms:          Cerium fluoride, cerium trifluoride, cerous fluoride                   Molecular Weight:           197.12

CAS #:                7758-88-5






OSHA PEL:      2.5 mg (F)/m3                    ACGIH TLV:    2.5 mg (F)/m3                    Percent:             100.0


HMIS Ratings: (0-4) Health: 3                  Flammability: 0               Reactivity: 0

HMIS Protective Equipment: G: glasses, gloves, combination respirator.






Boiling Point:                   2327 oC                                                                         Melting Point:                  1430 oC

Specific Gravity:              6.16 (Water=1)                                                             Evaporation Rate:           N/A

Solubility in H2O:            Insoluble. Soluble in H2SO4                                       Vapor Density:                 N/A       

Appearance and Odor:    White crystalline powder and pieces, no odor.






Flash Point (Method used): Not applicable                                                          Autoignition Temperature: N/A

Flammable Limits: Upper: N\A  Lower: N/A


Extinguishing Media: Use: Not applicable. Use suitable extinguishing media for surrounding materials and type of fire.

Special Fire Fighting Procedures: Firefighters must wear full face, self-contained breathing apparatus with full protective clothing to prevent contact with skin and eyes. Fumes from fire are hazardous. Isolate runoff to prevent environmental pollution.


Unusual Fire & Explosion Hazard: When heated to decomposition or comes in contact with acids/acid fumes, cerium fluoride may emit toxic fumes of fluorine, hydrogen fluorine vapors and fluorine gas.






Health Hazards (Acute and Chronic):


              To the best of our knowledge the chemical, physical and toxicological properties of cerium fluoride have not been thoroughly investigated and recorded. Cerium is considered a rare earth metal. These metals are moderately to highly toxic. The symptoms of toxicity of the rare earth elements include writhing, ataxia, labored respiration, walking on the toes with the arched back and sedation. The rare earth elements exhibit low toxicity by ingestion exposure. However, the intraperitoneal route is highly toxic while the subcutaneous route is poison to moderately toxic. The production of skin and lung granulomas after exposure to them requires extensive protection to prevent such exposure.



              Inorganic fluorides are generally highly irritating and toxic. Chronic fluorine poisoning, or "fluorosis," occurs among miners of cryolite, and consists of sclerosis of the bones, causes by fixation of the calcium by fluorine. There may also be some calcification of the ligaments. The teeth are mottled, and there is osteosclerosis and osteomalacia. Large doses can cause very severe nausea, vomiting, diarrhea, aggravate attacks of asthma and severe bone changes, making normal movements painful. Some signs of pulmonary fibrosis are noted. Some enzyme system effects are reported. Irritants to the eyes, skin and mucous membranes. Loss of weight, anorexia, anemia, wasting and cachexia and dental defects are among the common findings in chronic fluorine poisoning. There may be an eosinophilia and impairment of growth in young workers. Symptoms of intoxication include gastric, intestinal, circulatory, respiratory and nervous complaints and rashes.


Inhalation: Acute: May cause irritation to the respiratory tract and mucous membrane. Dusts may cause asthma attacks and lung damage such as lung granulomas and pulmonary edema. Large doses may cause immediate defecation, writhing, loss of muscle coordination, labored respiration, sedation, hypotension, dyspnea, hyperemia. Liver edema and necrosis, portal congestion, pleural effusion and granulomatous peritonitis with serious and hemorrhagic ascites, respiratory and cardiac failure.

Chronic: May cause fluorosis, pulmonary fibrosis, severe bone changes, hyperemia, cellular eosinophilia and vascular granulomata, acute chemical pneumonitis, subacute bronchitis and focal hypertrophic emphysema.


Ingestion: Acute: May cause gastrointestinal irritation.

Chronic: May effect the coagulation rate of the blood, renal and hepatic functions, circulatory, enzyme and nervous system.


Skin: Acute: May cause irritation, rashes and skin granulomas.

Chronic: May cause dermatitis, sensitivity to heat, itching and skin lesions.


Eye: Acute: May cause irritation.

Chronic: No chronic health effects recorded.


Target Organs: May affect the skeleton, kidneys, central nervous system, skin.

Carcinogenicity: NTP? No           IARC Monographs? No


Medical Conditions Generally Aggravated by Exposure: Pre-existing respiratory disorders.




EYES: Flush eyes with lukewarm water, lifting upper and lower eyelids, for at least 15 minutes. Seek medical attention if irritation develops or persists.

SKIN: Remove contaminated clothing; brush material off skin; wash affected area with mild soap and water; seek medical attention if irritation persists.

INHALATION: Remove victim to fresh air; keep warm ad quiet; give oxygen if breathing is difficult and seek medical attention.

INGESTION: Give 1-2 glasses of milk or water and induce vomiting; seek medical attention. Never induce vomiting or give anything by mouth to an unconscious person.






Stability: Stable


Conditions to Avoid: None

Incompatibility- Materials to Avoid: Acids


Hazardous Decomposition Products: Fumes of fluorine, hydrogen fluoride, fluorine gas and cerium oxide.

Hazardous Polymerization: Will not Occur








Steps to Be Taken in Case Material Is Released or Spilled: Wear appropriate respiratory and protective equipment. Isolate spill area and provide ventilation. Vacuum up spill using a high efficiency particulate absolute (HEPA) air filter and place in a closed container for proper disposal. Take care not to raise dust.


Waste Disposal Method: Dispose of in accordance with Local, State and Federal Waste Disposal Regulations.






Respiratory Protection (Specify Type): NIOSH approved dust respirator.


Ventilation: Local Exhaust: To maintain concentration at or below PEL, TLV.

Mechanical (General): Recommended


Protective Gloves: Neoprene, PVC, butyl gloves.

Eye Protection: Safety glasses

Other Protective Clothing/Equipment: Protective gear suitable to prevent contamination.






Work/Hygienic/Maintenance Practices: Implement engineering and work practice controls to reduce and maintain concentration of exposure at low levels. Use good housekeeping and sanitation practices. Do not us tobacco or food in work area. Wash thoroughly before eating and smoking. Do not blow dust off clothing or skin with compressed air.


Hazard Label Information:


            Store in cool, dry area.

            Store in tightly sealed container.

            Wash thoroughly after handling.



Prepared By:       Steve Dierks

Revised:              June 1993