INTRODUCTION
The
NIOSH Pocket Guide to Chemical Hazardsprovides a concise source of general industrial hygiene information forworkers, employers, and occupational health professionals. The Pocket Guidepresents key information and data in abbreviated tabular form for 677 chemicals or substance groupings commonly found in the work environment (e.g., manganese compounds, tellurium compounds, inorganic tin compounds, etc.). The industrial hygiene information found in the Pocket Guideassists users to 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 li
mits (RELs) and thos e with permissible exposure limits (PELs) as foundin the Occupational Safety and Health Administration (OSHA) Occupational Safety and Health Standards (29 CFR 1910.1000 – 1052).