A UNIVERSITY
School Of Engineering and
Natural Sciences
Department Of Basic Sciences
CHEM123:General Chemistry Laboratory
Experiment:
No
Student :
: 01
Name
:
Experiment Report
Name : Laboratory Safety
ID
:
Report Date:
Date : 15/10/2021
30/10/2021
100/100
Signature :
INTRODUCTION
This experiment purpose is to get familiarized with all the necessary laboratory regulations to be
acknowledged and applied before entering the laboratory, while conducting experiments, and after
finalizing experiments, understand the laboratory facilities
learn chemical hazard classifications and their standard system identification, identify risk phrases,
and know some general instruction to follow in case of fire, earthquakes, or receiving first aid.
Laboratory safety are groups of classified acts and rules set to ensure the safety of all people or
living things inside the laboratory and to ensure that the experiments are conducted in a safe
environment.
MATERIALS AND METHODS
Essential laboratory rules that are mandatory:
1. Prior to authorized laboratory entry, hair must get tied up, make-up, accessories and
flammable fabrics must be removed, and all Personal Protective Equipment (PPE) must be
worn properly.
2. Food and drinks are not allowed in the laboratory, and personal belongings must be kept far
away from the areas where the experiments will be conducted to ease movement and prevent
unnecessary falls and accidents.
3. Using or touching chemicals and apparatus without instructors approval
4. is prohibited.
5. Laboratory chemicals can not be smelled directly and can never be tasted.
6. Unlabeled substances must be treated with high precaution as extremely hazardous chemicals.
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RESULTS
Mistakes committed by Mr. Bean:
1. Laboratory entry without legal permission.
2. Non of the obligatory Personal Protective Equipment PPE were worn.
3. Unlabeled chemical was poured without measurement on another flammable substance then
poured in the beaker to enter a chemical reaction process in progress without any legal
approval.
4. When the hazard occurred were a huge cloud suddenly appeared, Mr. Bean evacuated the lab
alone leaving an unaware student of the situation inside the lab.
5. After the explosion, Mr. Bean ran off without reporting the risk although he knew a life was in
danger.
Mechanical engineering practices play important roles in various industry fields including
manufacturing of refrigeration systems, which require special refrigerants as R-134a (Çengel & Boles,
2008). In addition, some compressed gases are used for welding, like Acetylene gas.
Table 1: Chemicals GHS Symbols and R Codes:
Chemicals
R-134a
Acetylene
GHS Symbol
R Code
R5 Heating may cause an
explosion
R21 Harmful in contact with
skin
R5 Heating may cause an
explosion
R6 Explosive mixture with air
R12 Extremely flammable
R20 Harmful by inhalation
References
(SAFETY DATA
SHEET Halocarbon
134a (1,1,1,2Tetrafluoroethane),
2021)
(SAFETY DATA
SHEET Acetylene,
2021)
CONCLUSTION
In conclusion, laboratory safety regulations are successfully understood and recognized while
observing the represented experiment. Moreover, Risk and safety phrases as well as GHS symbols
were studied and found for two future important hazardous chemicals.
References
Çengel, Y. A., & Boles, M. A. (2008). Thermodynamics: An engineering approach. Boston: McGrawHill.
SAFETY DATA SHEET Acetylene. (2021, June 21). (Airgas) Retrieved from Airgas:
https://www.airgas.com/msds/001001.pdf
SAFETY DATA SHEET Halocarbon 134a (1,1,1,2-Tetrafluoroethane). (2021, Feburary 22). (Airgas)
Retrieved from Airgas: https://www.airgas.com/msds/001001.pdf
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