NIOSH Pocket Guide to Chemical Hazards 1.1
the author of this app says:
Quick and easy access to chemical hazard information for 677 unique substances assessed by NIOSH or regulated by OSHA -- at your fingertips, specially formatted and hyperlinked for small handheld displays! Provided in iSilo(tm) document format. Based on the printed NIOSH publication, this is an invaluable reference for health and safety personnel or anyone working with hazardous materials.
This download is a shareware demo, and omits index links to chemicals and synonyms beginning with "b" and "t".