Debbie,

Did these determination come from Safety Data Sheets?

Are these DOT hazard classes for the gases?

Unfortunately, SDS’s can be very unreliable.

Ron Harvey

Echelon Environmental

843-599-0330

https://www.linkedin.com/in/ronharvey/

Hi all:

Riddle me this – why is 5% hydrogen in nitrogen considered NOT flammable and 4% in argon considered flammable?  Tried to reach Praxair but no one is home.

This makes absolutely no sense to me.

Thanks,

Debbie

Debbie M. Decker, CCHO, ACS Fellow

Past Chair, Division of Chemical Health and Safety

Councilor and Programming Co-Chair

University of California, Davis

(530)754-7964

(530)304-6728

dmdecker**At_Symbol_Here**ucdavis.edu

Birkett's hypothesis: "Any chemical reaction

that proceeds smoothly under normal conditions,

can proceed violently in the presence of an idiot."

--- For more information about the DCHAS-L e-mail list, contact the Divisional membership chair at membership**At_Symbol_Here**dchas.org Follow us on Twitter **At_Symbol_Here**acsdchas