Some General Suggestions, May be Shit.

[misto]

most chemicals in the pile probably shouldnt trigger touch reactions unless youre barefoot. maybe a strong acid or very hot reagent could start melting your shoes off though.

i know that there is some degree of basic code in place for reagents to be placed on the floor as i distinctly remember making mischief by spraying fire extinguishers full of welding fuel around, thus making the entire room an invisible fire hazard ready to light up at a spark