food or drinks in the laboratory,not even stuffed in your backpack.If you do not have a locker to keep food in,please remove the food,drink and cigarettes to the hallway, or ask your instructor for a safe place to keep it.Smoking is not allowed in State buildings,as the nicotine and other contents of the smoke are well-known health hazards(look up the LDso of nicotine if you are skeptical) g.If you spill a liquid on the bench,immediately soak it up with paper towels and,if it is volatile,transfer the towels to the hood.Inform your instructor as to the nature of the spill in case further action is warranted. h.If concentrated acid is spilled,add sodium carbonate or bicarbonate,solution or solid. If concentrated base is spilled,add dilute and/or weak acid(e.g.acetic).Indicator solution or paper will be available in the lab.If your skin (or clothing)comes in contact with the spill,immediately flush the skin or clothing with water for 15 minutes. 1. Should you spill bromine solution anywhere,treat the spill immediately with sodium thiosulfate solution. j.Bottles of the reagents mentioned in g)and h)are available on the small counter above your bench. 6.Heat Hazards a.Most organic compounds are flammable and may catch fire even in the absence of flame at high temperatures. b.Flames are rarely allowed in the organic laboratory.If flames are permitted by your instructor,plan your experiments so that you never leave your flame unattended. c.If you light a flame,you are responsible for the consequences,so check with your instructor for a safe location. d.If you use a bunsen burner.be sure to tie back your hair and be careful that hair or clothing are kept clear of the flame. e.If there is a flame in the neighborhood,do not pour flammables;organic vapors are usually denser than air and will flow along the bench without alerting you by their odors. f.Make sure you know the location of the nearest fire extinguisher and the nearest exit. 88 food or drinks in the laboratory, not even stuffed in your backpack. If you do not have a locker to keep food in, please remove the food, drink and cigarettes to the hallway, or ask your instructor for a safe place to keep it. Smoking is not allowed in State buildings, as the nicotine and other contents of the smoke are well-known health hazards (look up the LD50 of nicotine if you are skeptical). g. If you spill a liquid on the bench, immediately soak it up with paper towels and, if it is volatile, transfer the towels to the hood. Inform your instructor as to the nature of the spill in case further action is warranted. h. If concentrated acid is spilled, add sodium carbonate or bicarbonate, solution or solid. If concentrated base is spilled, add dilute and/or weak acid (e.g. acetic). Indicator solution or paper will be available in the lab. If your skin (or clothing) comes in contact with the spill, immediately flush the skin or clothing with water for 15 minutes. i. Should you spill bromine solution anywhere, treat the spill immediately with sodium thiosulfate solution. j. Bottles of the reagents mentioned in g) and h) are available on the small counter above your bench. 6. Heat Hazards a. Most organic compounds are flammable and may catch fire even in the absence of flame at high temperatures. b. Flames are rarely allowed in the organic laboratory. If flames are permitted by your instructor, plan your experiments so that you never leave your flame unattended. c. If you light a flame, you are responsible for the consequences, so check with your instructor for a safe location. d. If you use a bunsen burner, be sure to tie back your hair and be careful that hair or clothing are kept clear of the flame. e. If there is a flame in the neighborhood, do not pour flammables; organic vapors are usually denser than air and will flow along the bench without alerting you by their odors. f. Make sure you know the location of the nearest fire extinguisher and the nearest exit