Chlorine trifluiride (CIF3).
nitrogen tetroxide (N204).
Sarin will also kill you by attacking the nervous system.
It would be indeed a glass. It is a defined as a supercooled liquid. You can really take a old glass and measure the thicknes at the bottom and there is a definite difference.
Beyond, that i would guess VTB, VTB is a gummy starry stuff that ends at the bottom its full form is Bottom Vaccum Towers in refineries.
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