1. You must NOT
be in the laboratory without a TA present. The laboratory sessions are
four hours in length. You will not be allowed in lab after your lab
session has ended.
goggles for eye protection must be worn properly in the laboratory at
all times. If you need to remove your goggles, step outside the
laboratory to do so. Prescription eyeglasses (even with safety lenses)
do not provide adequate eye protection, especially from the sides. Therefore,
you will be removed from the laboratory if you are found without safety
goggles covering your eyes. It is very strongly recommended that you
NOT wear contact lenses of any kind in the laboratory. You should read
the safety information on contact lenses and laboratory accidents posted
outside the lab. Please check with the course instructor if you absolutely
need to wear contact lenses. If you get anything in your eyes, use the
eye wash station or the eye wash faucet to wash your eyes thoroughly
with plenty of water and notify your TA immediately.
Lab coat for bodily protection must be worn properly in the laboratory
at all times.
4. Closed-toed shoes
that completely cover the foot MUST be worn
in the laboratory at all times. Sandals or perforated shoes are not
permitted, as broken glass and spilled chemicals are constant hazards.
5. Shorts and short
skirts (above the ankle) will NOT be allowed. Shirts/blouses should
protect the upper body. Loose clothing should not be worn. Do not wear
hosiery as it will "melt" upon contact with acid and some
6. You MUST note
the location of the fire extinguishers, safety showers, eye washes,
and first-aid kits in the laboratory, so that you will know where to
obtain these items if they are needed. You will fill out the Safety-device
Location Worksheet during your first laboratory session.
7. Many of the chemicals
used in the laboratory experiments will be new to you. You should become
acquainted with the properties of every new chemical you use. The Merck
Index and www.chemfinder.com are good sources for finding the properties
and toxicities of many organic compounds. Access to material safety
data sheets through various web sites can be obtained on the School
of Chemical Sciences Safety Resources Web Page at safety.scs.uiuc.edu.
All chemicals should be treated as though they are toxic. Compounds
can enter the body by being absorbed through the skin, or by being inhaled
or ingested. Therefore,
(a) Keep vessels
covered. Put the caps back on the solvent bottles immediately. Never
evaporate solvents other than water into the atmosphere. Wipe up any
spills immediately. In order to check for an odor, hold the sample
about a foot away from your face and gently fan the vapors towards
your nose. Do not put anything in your mouth.
(b) You should
use the gloves that are available. Keep your bench top clean!
DO NOT rub your eyes or your face without first washing your hands.
If something does get into your eyes, remember to wash your eyes with
plenty of water and notify your TA. You should protect your clothing
by wearing a lab coat. Always wash your hands thoroughly before leaving
the laboratory session. If you have any cuts or scrapes, cover them
with band-aids, etc., before coming to the laboratory.
(c) To dilute
acids, carefully and slowly add the concentrated acid to the water,
never the other way around. This avoids dangerous splattering.
"Do like you oughta, add acid to water".
8. Never heat
a closed system! Always use boiling chips when heating any liquid,
even water. When heating a test tube, never point it at yourself or
at anyone else. Never heat flammable solvents (i.e., anything other
than water) in an open container with a Bunsen burner.
When you want to
use a Bunsen burner, make sure that none of your neighbors is using
a flammable solvent and that there are no flammables in the immediate
area. Light the match first, then turn on the gas while holding the
match close to the top of the burner. Long hair must be tied back. Do
not wear garments with floppy sleeves or loose wrist cuffs. Turn off
the Bunsen burner immediately when you are finished with it.
9. Do not use cracked
or chipped glassware. Examine your glassware for "star" cracks. Broken
glassware should be replaced immediately with new glassware from the
storeroom. Do not handle broken glass with your hands. Sweep it up,
or use a piece of toweling to grasp the pieces. The storeroom has leather
gloves to wear while cleaning up broken glassware.
10. Only aqueous
solutions (e.g., aqueous acids and bases) may be discarded down the
drain. Flush them down with plenty of water. Other waste materials,
both liquid and solid, should be disposed of into the properlabeled
waste containers located in the hoods. Broken thermometers should be
put into jars located in the hoods. Ask your TA to assist you in cleaning
up any spilled mercury.
11. In the case
of an accident (cuts, burns, reaction to a chemical, etc.), inform
your TA immediately. A limited degree of first-aid is available
in the storeroom, 469 Noyes Lab. If you are seriously injured, you will
be taken to the medical center. Report all accidents immediately.
health is more important than your grade in Chem 233!
12. Never pour chemicals
directly from the storage containers directly into your reaction vessel.