Room 231 (circled in pink) is the chemistry store room. Over 400 compounds, over half of them considered "safe", are stored there. Amounts are generally less than a pound, or less than a pint.
The room has an explosion-proof freezer, an acid cabinet, and a flame-proof storage cabinet. It also has a fume hood and two external exhausts.
Room 230 is the chemistry lab. Room
233 is the biology prep room, which also has a small flame-proof cabinet.