What's New

April 7, 2020
I have completed the 2020 ACGIH updates. This includes the 2020 Notice of Intended Changes and the "2020 Supplement to the 7th Edition, Documentation of the Threshold Limit Values and Biological Exposure Indices." The chemical monographs in the 2020 Supplement are Acrylamide, 4-tert-Butylbenzoic acid, Cyclohexane, Cyclohexene, Formamide, Hexazinone, Methyl isobutyl carbinol, Resin acids, Styrene, Styrene oxide, Sulfur pentafluoride, and Thiodicarb. All new values, e.g., TLVs and ACGIH cancer classifications were updated in the live database. Text was edited with new information. The following agent-disease relationships were changed: deleted link between Methyl isobutyl carbinol and Encephalopathy, chronic solvent; based on "Resin acids" monograph added link between Tall oil rosin (8052-10-6) and Asthma, occupational; added link between Sulfur pentafluoride and Pneumonitis, toxic; and added link between Thiodicarb and Contact dermatitis, allergic.

March 5, 2020
I am starting a review of the second 1250 agents added to the database (by Agent ID). Review of the first 1250 was completed in November 2019. I am checking spelling, hyperlinks, IARC classifications, TLVs, IDLHs, vapor pressures, and disease links.

December 20, 2019
New site launched!
Improvements include adding chemical structures, adding popup tips to some agent fields, adding new agent and disease fields, alphabetizing chemical lists on base names of chemicals (without prefixes), and improvements in the user interface for both the computer and mobile devices. About 200 of over 10,000 chemical structures in the Haz-Map database could not be imported into the web-based system. These will be added in the next couple weeks.