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6.
Never pour water into concentrated acid.
Pour the acid slowly into the water, stirring
constantly.
Concentrated acids usually are more dense
than water and when mixed with water often evolve heat that
can cause severe splattering.
7.
Volatile chemicals that are poisonous, irritating
to the skin, or that have unpleasant odours should always
be used in the fume hood.
8.
Many of the chemicals used in this course
are toxic and must not be poured down the drain. Note any
specific disposal instructions given in
the experimental procedure or by the laboratory instructor.
C.
Accidents
1.
All accidents must be reported to the laboratory
instructor regardless of how insignificant they may
appear to be.
2.
Clean up all chemical spills immediately.
This includes solid chemicals spilled on the balance tables.
Consult your laboratory instructor for specific
details.
3.
Clean up all broken glass immediately.
Dispose of broken glass in the special containers labelled
“Broken
Glass”.
4.
Chemical burns by acid, alkali, or bromine
are to be flushed immediately with plenty of water. If possible,
wash the affected area immediately at the
sink with lots of water. If the area of the spill affects a large
area, use the safety shower, or if the chemical
has been splashed onto your face or eyes, use the eye
wash station to flush the affected area
immediately. For all accidents, have a fellow student immediately
summon the laboratory instructor for help.
5.
If your clothing should catch fire, try
to extinguish the flames with water or try to smother the fire by
rolling on the floor or wrapping the flaming
clothing in the fire blanket. Also, the safety shower may be
used in lieu of the fire blanket.
6.
Become familiar with the location of fire
extinguishers in the laboratories. In case of a fire, first have
someone alert your laboratory instructor,
then try to put out the fire with the fire extinguisher. Do not
rush. The time necessary to read the
instructions on the extinguisher is well spent, despite the
emergency. Locate the fire alarms
in the laboratory passage-way. Be familiar with exits.
7.
Always be on the alert for danger which
might arise through someone else’s experiments.
