| Chemical Safety headlines | 168 | 02 Jan 2019–30 Dec 2019 |
| Re: [DCHAS-L] Letter to the National PTA regarding the rainbow flame demo | 38 | 24 Jun 2019–03 Oct 2019 |
| What is happening to the GHS SDS? | 33 | 08 Jun 2019–11 Jun 2019 |
| Is lead sheeting a source of lead dust? And-Chemical Exposure question... | 31 | 26 Jul 2019–30 Jul 2019 |
| Beacon HS student burned in botched chemistry experiment awarded nearly $60M | 29 | 01 Jul 2019–09 Jul 2019 |
| solvent drums | 24 | 23 Apr 2019–30 Apr 2019 |
| Evolution of chemical law and toxicology... | 23 | 20 May 2019–22 May 2019 |
| Validity of the risk matrix | 22 | 17 Oct 2019–30 Oct 2019 |
| liability and an impossible CHP | 20 | 09 Nov 2019–12 Nov 2019 |
| Monona Rossol's Latest Honor! | 20 | 14 May 2019–16 May 2019 |
| New Article | 19 | 10 Aug 2019–20 Oct 2019 |
| delayed acid burn | 18 | 06 Nov 2019–07 Nov 2019 |
| Safer Diels-Alder reaction | 18 | 19 Jul 2019–22 Jul 2019 |
| *EXT* Re: [DCHAS-L] LD50 Source Data | 17 | 23 Oct 2019–24 Oct 2019 |
| [New post] Health and Safety II? | 17 | 02 Aug 2019–13 Aug 2019 |
| ACS Chemical Health and Safety - EIC Update | 17 | 06 Sep 2019–09 Sep 2019 |
| Anyone know a good food testing lab? | 17 | 16 Dec 2019–17 Dec 2019 |
| Fancy nails in the lab | 17 | 18 Feb 2019–14 Mar 2019 |
| PNNL Hydrogen Fire Event Video | 17 | 28 Jan 2019–29 Jan 2019 |
| CHO at museum asks for our help | 16 | 08 Sep 2019–11 Sep 2019 |
| Compressed gases and sparking electronics | 16 | 25 Jun 2019–01 Jul 2019 |
| Scientist says some pollution is good for you - a disputed claim Trump's EPA has embraced | 16 | 21 Feb 2019–02 Mar 2019 |
| Thoughts? | 16 | 02 Aug 2019–15 Aug 2019 |
| Disposal of Mercury Manometer | 15 | 11 Dec 2019–12 Dec 2019 |
| How does your institution interpret ANSI 358.1-2014 and safety shower testing? | 15 | 08 Nov 2019–20 Nov 2019 |
