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Health Guidelines


CAS Number: 7440-58-6
Synonyms: Metallic hafnium
elemental hafnium


  • NIOSH/OSHA Health Guideline. Summarizes pertinent information about for workers and employers as well as for physicians, industrial hygienists,and other occupational safety and health professionals who may need such information to conduct effective occupational safety and health programs.


  • Health Hazards. Routes of exposure, summary of toxicology, signs and symptoms, emergency procedure.
  • Workplace Monitoring and Measurement.
  • Medical Surveillance. Workers who may be exposed to chemical hazards should be monitored in a systematic program of medical surveillance that is intended to prevent occupational injury and disease. The program should include education of employers and workers about work-related hazards, placement of workers in jobs that do not jeopardize their safety or health, early detection of adverse health effects, and referral of workers for diagnosis and treatment.


  • Exposure Sources and Control Methods.
  • Personal Hygiene Procedures.
  • Respiratory Protection. Conditions for respirator use, respiratory protection program.
  • Personal Protective Equipment. Protective clothing should be worn to prevent any possibility of skin contact. Chemical protective clothing should be selected on the basis of available performance data, manufacturers' recommendations, and evaluation of the clothing under actual conditions of use.
  • Emergency Medical Procedures. Material Safety Data Sheets (MSDS's) include chemical specific information on emergency medical and first aid procedures as referenced under the OSHA Hazard Communication standard, 29 CFR 1910.1200, (g)(2)(X). This standard requires chemical manufacturers and importers to obtain or develop an MSDS for each hazardous chemical they produce or import. Employers shall have an MSDS in the workplace for each hazardous chemical which they use.
  • Storage.
  • Spills and Leaks. In the event of a spill or leak , persons not wearing protective equipment and clothing should be restricted from contaminated areas until cleanup has been completed.

Revision Date: 27 April 1999


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