General Chemistry Laboratory CHE116/CHE118

1. General Chemistry LaboratoryCHE116/CHE118 Safety Aspects for Lab Work to Supplement Student Laboratory Safety Contract CHE116/CHE118 Fall 2012

2. 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 CHE116/CHE118 Fall 2012

3. 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. (continued on next slide) CHE116/CHE118 Fall 2012

4. Use a thick layer of paper towel around the glass to prevent cuts if the glass should break CHE116/CHE118 Fall 2012

5. Pipet and Pipetter Pipet Pipetter CHE116/CHE118 Fall 2012

6. Use proper technique to prevent cuts Hold pipet near end to be inserted Insert pipet into pipetter CHE116/CHE118 Fall 2012

7. Filter Flask and Vacuum Tubing CHE116/CHE118 Fall 2012

8. Hold side arm near end Push glass arm into tubing CHE116/CHE118 Fall 2012

9. Thermometer and Rubber Stopper Hold thermometer near the end to be inserted Insert into rubber stopper (would be better with paper towel wrap) CHE116/CHE118 Fall 2012

10. 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. CHE116/CHE118 Fall 2012

11. Fume Hoods and Reagents CHE116/CHE118 Fall 2012

12. 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 CHE116/CHE118 Fall 2012

13. 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. CHE116/CHE118 Fall 2012