There are twenty-eight 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.
Isocyanates hazards are addressed in specific standards for general industry, shipyard employment, and the construction industry. This section highlights OSHA standards and standard interpretations (official letters of interpretation of the standards) related to isocyanates.
General Industry (29 CFR 1910)
- 1910 Subpart H, Hazardous materials
- 1910 Subpart Z, Toxic and hazardous substances [related topic page]
Shipyard Employment (29 CFR 1915)
Construction Industry (29 CFR 1926)
- 1926 Subpart D, Occupational health and environmental controls
- NEW National Emphasis Program - Occupational Exposure to Isocyanates (PDF*). OSHA Directive CPL 03-00-017, (2013, June 20). Describes policies and procedures for implementing a National Emphasis Program to identify and reduce or eliminate the incidence of adverse health effects associated with occupational exposure to isocyanates.
- Search all available directives.
- Selection of air purifying respirators for gases and vapors with poor warning properties (diisocyanates). (2000, July 18). Clarification regarding OSHA's position on the selection of air purifying respirators (APR's) for gases and vapors with poor warning properties.
- Search all available standard interpretations.
*Accessibility Assistance: Contact OSHA's Directorate of Technical Support and Emergency Management at (202) 693-2300 for assistance accessing PDF materials.
All other documents, that are not PDF materials or formatted for the web, are available as Microsoft Office® formats and videos and are noted accordingly. If additional assistance is needed with reading, reviewing or accessing these documents or any figures and illustrations, please also contact OSHA's Directorate of Technical Support and Emergency Management at (202) 693-2300.
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