General Chemistry LaboratoryCHE116/CHE118

Safety Aspects for Lab Work to Supplement Student Laboratory

Safety Contract

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Inserting Glass Into Tubing

• Glass tube into all-purpose tubing• Glass pipet into pipetter• Glass arm of filter flask into vacuum tubing• Glass thermometer into rubber stopper

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Basic Technique

• Always hold the glass tubing near the end being inserted, to prevent the breakage of the glass while it is inserted into tubing.

• Wet the outside end of the glass tubing with deionized water (just a drop or two). This may make insertion into the tubing easier.

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Use a thick layer of paper towel around the glass to prevent cuts if the glass should break

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Pipet and Pipetter

Pipetter

Pipet

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Use proper technique to prevent cutsHold pipet near end to be inserted Insert pipet into pipetter

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Filter Flask and Vacuum Tubing

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Hold side arm near end Push glass arm into tubing

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Thermometer and Rubber Stopper

Hold thermometer near the end to be inserted

Insert into rubber stopper(would be better with paper towel wrap)

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Additional Safety NotesAcquiring Reagents

• Wear gloves and goggles

• Always dispense chemicals from stock bottles located in the fume hood. The safest place to have a chemical spill is in the fume hood.

• Only take as much chemicals as needed to perform the experiment.

• Label the receiving beaker.

• After the experiment is finished, the chemicals (reactants and products) should be disposed of in the waste bottle located in the fume hood.

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Fume Hoods and Reagents

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Acids

• Acids are used frequently in CHE116 and CHE118.

• Always wear gloves and goggles when handling any and all chemicals

• When combining acid and water, always add acid to water; never add water to acid

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For All Laboratory Work:

• Always wear goggles and gloves during lab work. Take goggles off at the goggle cabinet.

• Take the smallest amount of reagent necessary to your lab bench (if reagent is allowed outside of hood)

• Clean up chemical spills immediately

• Notify your lab instructor if you get any chemicals on you. An incident report will be written.

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