a base is in a sense the opposite of an acid.
They dropped a chemical that is "anti acidic"
Any base that could be dangerous enough to have to evacuate a building? When thinking about bases, I'm thinking bleach
tert-butyl lithium. Ignites on contact with air. Often used in conjunction with flammable solvents, so large fires and explosions are possible when working with large enough quantities.
As far as safety SOPs go, nearly any chemical spill of a large enough quantity warrants evacuating the area in many chemical safety plans. For some institutions, this is as little as 1 liter or 500g of material. This can obviously be overkill if you spill something that is relatively inert and non-toxic such as water or NaCl.
spilling a bottle of water in my house: aw shit better get the mop
spilling a bottle of water in the lab: aw shit now we gotta evacuate and call in the chemical spill guys
I prefer to flood the entire lab if I'm going to make a scheme. Time to use the chemical shower with no drain!
