image. Older specimen. Note the once-red universal veil becomes yellowish on the cap (exposed) and is still red on the stipe bulb (presumably exposed for the photo).
The Methyltriacetoxysilane (MTAC) is a clear to yellowish liquid with acrid odor of acetic acid (vinegar). It hydrolyzes in the presence of moisture (acetic acid is released) to form silanols, which can react with themselves to pro-duce siloxanes or bind to inorganic substrates.
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