What's New

• Updated chemical data

App Description

The NIOSH Pocket Guide to Chemical Hazards is intended as a source of general industrial hygiene information for workers, employers, and occupational health professionals. The Pocket Guide presents key information and data in abbreviated tabular form for 677 chemicals or substance groupings (e.g., manganese compounds, tellurium compounds, inorganic tin compounds, etc.) that are found in the work environment. The industrial hygiene information found in the Pocket Guide should help users recognize and control occupational chemical hazards. The chemicals or substances contained in this revision include all substances for which the National Institute for Occupational Safety and Health (NIOSH) has recommended exposure limits (RELs) and those with permissible exposure limits (PELs) as found in the Occupational Safety and Health Administration (OSHA) General Industry Air Contaminants Standard (29 CFR 1910.1000).

• 677 chemical entries and appendices.
• Links to IDLH, as well as NIOSH and OSHA Methods (requires a data connection).
• Search chemical by name and synonym, DOT number, CAS number, RTECS number.
• Preferences settings to select information to be displayed.
• Bookmark commonly used chemicals
• Chronological history of chemicals viewed
• Drag and drop chemical entries to copy information being displayed to other apps (iPad version/iOS 11 and above)

iPhone Screenshots

(click to enlarge)

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iPad Screenshots

(click to enlarge)

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App Changes

  • June 16, 2019 Initial release
  • September 24, 2019 New version 1.0.2
  • December 10, 2019 New version 1.0.5
  • July 15, 2020 New version 1.0.7
  • October 28, 2020 New version 1.0.9
  • October 04, 2023 New version 1.0.10