Mercury

Standards

Mercury hazards are addressed in specific OSHA standards for general industry, maritime, and construction. This section highlights OSHA standards and documents related to mercury.

OSHA Standards
General Industry (29 CFR 1910)
General Industry (29 CFR 1910)
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1910 Subpart H - Hazardous Materials

1910.120, Hazardous waste operations and emergency response.

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1910 Subpart I - Personal Protective Equipment

1910.132, General requirements. See Appendix B for information related to Non-mandatory compliance guidelines for hazard assessment and personal protective equipment selection.

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1910.134, Respiratory Protection.

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1910 Subpart Q - Welding, Cutting and Brazing

1910.252, General requirements.

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1910 Subpart Z - Toxic and Hazardous Substances

1910.1000, Air contaminants.

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1910.1000 TABLE Z-2, TABLE Z-2.

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1910.1200, Hazard Communication.

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Maritime (29 CFR 1915, 1917, 1918)
Maritime (29 CFR 1915, 1917, 1918)
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1915 Subpart I - Personal Protective Equipment

1915.151, Scope, application and definitions.

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1915.152, General requirements.

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1915 Subpart I App A, Non-mandatory Guidelines for Hazard Assessment, Personal Protective Equipment (PPE) Selection, and PPE Training Program

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1915 Subpart Z - Toxic and Hazardous Substances

1915.1000, Air contaminants.

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Construction Industry (29 CFR 1926)
Construction Industry (29 CFR 1926)
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1926 Subpart D

1926.55, Gases, vapors, fumes, dusts, and mists.

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1926.57, Ventilation.

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1926 Subpart E - Personal Protective and Life Saving Equipment

1926.95, Criteria for personal protective equipment.

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1926 Subpart J - Welding and Cutting

1926.353, Ventilation and protection in welding, cutting, and heating.

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State Standards

There are 28 OSHA-approved State Plans, operating state-wide occupational safety and health programs. State Plans are required to have standards and enforcement programs that are at least as effective as OSHA's and may have different or more stringent requirements.

Additional Directives

Note: The directives in this list provide additional information that is not necessarily connected to a specific OSHA standard highlighted on this Safety and Health Topics page.

Additional Letters of Interpretation

Note: The letters in this list provide additional information that is not necessarily connected to a specific OSHA standard highlighted on this Safety and Health Topics page.


Recommended Exposure Limits

Includes exposure limit information from OSHA, the National Institute for Occupational Safety and Health (NIOSH), and the American Conference of Industrial Hygienists (ACGIH).

  Mercury, Alkyl Compounds Mercury, Aryl Compounds Mercury, Inorganic Compounds
OSHA      
     8-Hour TWA 0.01 mg/m3, Skin - -
     Ceiling 0.04 mg/m3, Skin 0.1 mg/m3 0.1 mg/m3
NIOSH      
     8-Hour TWA 0.01 mg/m3, Skin 0.05 mg/m3, Skin 0.05 mg/m3, Skin
     ST/Ceiling 0.03 mg/m3, (ST) Skin 0.1 mg/m3, (Ceiling) Skin 0.1 mg/m3, (Ceiling) Skin
     IDLH 2 mg/m3 10 mg/m3 10 mg/m3
ACGIH      
     8-Hour TWA 0.01 mg/m3, Skin 0.1 mg/m3, Skin 0.025 mg/m3, Skin
     Short Term 0.03 mg/m3, Skin - -