Khelil_101258560_prelab1 (2)

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PRELAB WORKSHEET 1 – Solubility & Recrystallization Part 1 1. Purpose (3) – In a few sentences, briefly describe what is being done in this experiment and the main concepts being investigated. Include any reaction and techniques that will be used to synthesize and characterize your results. A solubility test will be done using various compounds in various solvents. Then a purification of an organic compound will be done by recrystallization and with a decolorizing charcoal. 2. Procedure (7) (choose a format: flowchart, point form, etc.) – In a clear and concise manner, include the correct order of the steps taken, quantities, compounds, and apparatus. Note: anyone looking at this written procedure should have all the information needed to replicate the experiment. Part 1: - one spatula tip of each compound is added into separate test tubes, 4 times so you have 20 test tubes in total. - The test tubes are separated into four groups to have one compound in each group. - 3mL of the solvent is added into the first group of tests tubes, once the group is finished you repeat with the other three solvents. Write down observations for each test tube. - If the compound does not dissolve, the test tube is heated in a steam bath, observe the solubility of the compound once boiling. - If a compound is moderately soluble a small amount of solvent is added until the solution is complete. - The solutions are cooled to cause recrystallization, the observations are then recorded. Part 2: - 1g of crude salicylic acid is measured using a scale on a weigh paper. - 25mL of hot distilled water and the sample is placed in a 150mL beaker. - The beaker is placed on a hot plate and swirled until the boiling point is reached. - Add increments of 2mL of water until sample has dissolved, write down how much extra water was added to your solution. - The beaker is removed from the hot plate and the activated charcoal is added to the solution while swirling. - The beaker is reheated to boil. - The Buchner funnel is prepared by adding filtration paper to the funnel, adding water to the filtration paper, and turning on the vacuum to let the paper stick to the funnel. Let the water get sucked out. - A flask is placed under the funnel. - The solution is left to cool to room temperature. - The crystal solution is slowly poured into the funnel.
- The beaker is rinsed so there’s no crystal in the beaker. - Another suction is done to the remaining crystals. - Once the filtration is complete the filter paper with the crystals are transferred into a dry beaker. Part 2 Chemical hazards (10) – for each of the chemicals listed below provide a matrix that describes a summary of: “Section 2 - Hazard(s) identification”, “Section 4 - First-aid measures”, “Section 8 - Exposure controls/personal protection” and “Section 11 - Toxicological information” from the SDS sheets. You can find the SDS from the link provided above or from a reliable manufacturer website by typing “the chemical name and SDS” on google. Include reference(s) for your source(s). Complete the safety information for the following compounds: - Anthracene, Benzoic acid, Phthalic acid, Resorcinol, Sodium naphthionate, Ethanol, Hexane, Toluene, Salicylic acid, charcoal. Anthracene: - Hazards: o Eye irritation: causes serious eye irritation. o Short- and long-term aquatic hazard: very toxic to the aquatic life with long lasting effects - Prevention: o Wash skin after using. o Avoid releasing to environment. o Wear eye protection. o Collect spillage. o If it gets in eyes, then rinse with water for several minutes. If irritation continues get medical attention. o Dispose of contents - First aid measures: o Inhalation: get fresh air o Skin contact: take off all contaminated clothing and rinse skin with water. o Eye contact: rinse with plenty of water and call an ophthalmologist. o Ingested: make victim drink water and consult a physician. - Exposure controls o Change contaminated clothing. o Wash hands after working with the substance. o Wear glasses, protective gloves, and appropriate clothing to prevent skin exposure. Benzoic acid: - Hazards: o Serious eye: damage causes serious eye damage.
o Skin irritation: causes skin irritation. o Specific target organ toxicity: causes damage to lungs through repeated exposure if inhaled. o Short-term aquatic hazard: harmful to the aquatic life. - Prevention: o Wash skin after using. o Avoid releasing to environment. o Wear eye protection. o Collect spillage. o If it gets in eyes, then rinse with water for several minutes. If irritation continues get medical attention. o Dispose of contents - First aid measures: o Inhalation: get fresh air and call-in physician. o Skin contact: take off all contaminated clothing and rinse skin with water. o Eye contact: rinse with plenty of water and call an ophthalmologist. o Ingested: make victim drink water and consult a physician. - Exposure controls o Change contaminated clothing. o Wear glasses, protective gloves, and appropriate clothing to prevent skin exposure. Phthalic acid: - Hazards: o Eye irritation: causes serious eye irritation. o Skin irritation: causes skin irritation. o Specific target organ toxicity: may cause respiratory irritation. - Prevention: o Wash skin after using. o Avoid releasing to environment. o Wear eye protection. o Collect spillage. o If it gets in eyes, then rinse with water for several minutes. If irritation continues get medical attention. o Dispose of contents - First aid measures: o Inhalation: get fresh air. o Skin contact: take off all contaminated clothing and rinse skin with water. o Eye contact: rinse with plenty of water and call an ophthalmologist. o Ingested: make victim drink water and consult a physician. - Exposure controls o Change contaminated clothing.
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o Wear glasses, protective gloves, and appropriate clothing to prevent skin exposure. Resorcinol: - Hazards: o Serious eye damage: causes serious eye damage. o Skin irritation: causes skin irritation. o Specific target organ toxicity: may cause damage to organs (respiratory system, central nervous system, blood) if swallowed. o Skin sensitization: may cause an allergic skin reaction. o Acute toxicity: harmful if swallowed. o Short- and long-term aquatic hazard: harmful to aquatic life with long lasting effects. - Prevention: o Wash skin after using. o Do not breath dust. o Avoid releasing to environment. o Don’t eat or drink while using the product. o Wear eye protection. o Collect spillage. o Dispose of contents - First aid measures: o Inhalation: get fresh air. Call in physician. o Skin contact: take off all contaminated clothing and rinse skin with water. consult a physician. o Eye contact: Rinse with water. Immediately call poison control/ doctor. o Ingested: make victim drink water and seek medical attention immediately. - Exposure controls o Change contaminated clothing. o Wear glasses, protective gloves, and appropriate clothing to prevent skin exposure. Sodium naphthionate: - Hazards: o Serious eye irritation: causes serious eye irritation. - Prevention: o Wash skin after using. o Do not breathe dust. o Avoid releasing to environment. o Don’t eat or drink while using the product. o Wear eye protection.
o Collect spillage. o Dispose of contents - First aid measures: o Inhalation: get fresh air. o Skin contact: take off all contaminated clothing and rinse skin with water. o Eye contact: Rinse with water. Immediately call an ophthalmologist. o Ingested: make victim drink water. - Exposure controls o Change contaminated clothing. o Wear glasses, protective gloves, and appropriate clothing to prevent skin exposure. Ethanol: - Hazards: o Serious eye irritation: causes serious eye irritation. o Flame: highly flammable liquid and vapor - Prevention: o Wash skin after using. o Keep away from heat. o Keep container closed. o Use non sparking tools. o Don’t eat or drink while using the product. o Wear eye protection. o Dispose of contents - First aid measures: o Inhalation: get fresh air. o Skin contact: take off all contaminated clothing and rinse skin with water. o Eye contact: Rinse with water. Immediately call an ophthalmologist. o Ingested: make victim drink water and consult a physician. - Exposure controls o Change contaminated clothing. o Wear glasses, protective gloves, and appropriate clothing to prevent skin exposure. o Flame protective clothing. Hexane: - Hazards: o Flammable liquids: highly flammable liquid and vapor o Skin irritation: causes skin irritation. o Harmful if swallowed: may be fatal if swallowed and enters airways. o Specific target organ toxicity: may cause damage to organs (nervous system) if inhaled.
o Aspiration hazard: may cause drowsiness or dizziness. o Reproductive toxicity: suspected of damaging fertility or the unborn child o Short- and long-term aquatic hazard: harmful to aquatic life with long lasting effects. - Prevention: o Obtain special instructions before use. o Wash skin after using. o Keep away from heat. o Use non spark tools. o Do not breathe mist or vapor. o Avoid releasing to environment. o Don’t eat or drink while using the product. o Wear eye protection. o Collect spillage. o Dispose of contents - First aid measures: o Inhalation: get fresh air. Call a physician. o Skin contact: take off all contaminated clothing and rinse skin with water. consult an ophthalmologist. o Eye contact: Rinse with water. Immediately call poison control/ doctor. o Ingested: caution if victim vomits. Keep airways free. Pulmonary failure is possible after aspiration of vomit. Call a physician immediately. - Exposure controls o Change contaminated clothing. o Wear glasses, protective gloves, and appropriate clothing to prevent skin exposure. o Flame resistant clothing. o Respiratory protection. Toluene: - Hazards: o Flammable liquids: highly flammable liquid and vapor. o Skin irritation: causes skin irritation. o Harmful if swallowed: may be fatal if swallowed and enters airways. o Specific target organ toxicity: may cause damage to organs (nervous system) if inhaled. o Aspiration hazard: may cause drowsiness or dizziness. o Reproductive toxicity: suspected of damaging fertility or the unborn child. o Short- and long-term aquatic hazard: harmful to aquatic life with long lasting effects. - Prevention: o Obtain special instructions before use.
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o Wash skin after using. o Keep away from heat. o Use non spark tools. o Do not breathe mist or vapor. o Avoid releasing to environment. o Don’t eat or drink while using the product. o Wear eye protection. o Collect spillage. o Dispose of contents - First aid measures: o Inhalation: get fresh air. Get artificial respiration if needed. If breathing is difficult give oxygen. Seek medical attention immediately. o Skin contact: take off all contaminated clothing and rinse skin with water. consult an ophthalmologist. o Eye contact: Rinse with water. Immediately go to a hospital. o Ingested: rinse mouth with water. Immediately go to a hospital. - Exposure controls o Change contaminated clothing. o Wear glasses, protective gloves, and appropriate clothing to prevent skin exposure. o Respiratory protection. Salicylic acid: - Hazards: o Eye damage: serious eye damage. o Reproductive toxicity: suspected of damaging fertility or the unborn child. o Acute toxicity: harmful if swallowed. - Prevention: o Obtain special instructions before use. o Wash skin after using. o Keep away from heat. o Use non spark tools. o Do not breathe mist or vapor. o Don’t eat or drink while using the product. o Wear eye protection. o Collect spillage. o Dispose of contents - First aid measures: o Inhalation: get fresh air. Call in physician. o Skin contact: take off all contaminated clothing and rinse skin with water. consult a physician. o Eye contact: Rinse with water. Immediately call a ophthalmologist.
o Ingested: make victim drink water. consult a physician. - Exposure controls o Change contaminated clothing. o Wear glasses, protective gloves, and appropriate clothing to prevent skin exposure. o Respiratory protection. charcoal: - Hazards: o May combustible dust concentrations in air. - Prevention: o Obtain special instructions before use. o Wash skin after using. o Keep away from heat. o Use non spark tools. o Do not breathe mist or vapor. o Don’t eat or drink while using the product. o Wear eye protection. o Collect spillage. o Dispose of contents - First aid measures: o Inhalation: get fresh air. If not breathing, give artificial respiration. o Skin contact: wash off with soap and water. o Eye contact: Rinse with water as a precaution. o Ingested: rinse mouth with water. - Exposure controls o Wear glasses, protective gloves, and appropriate clothing to prevent skin exposure.
Use the table below to record the solubility observations during the experiment. Table 1. Solubility tests H 2 O increasing polarity increasing polarity
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Citations (1) The life science business of Merck KGaA, Darmstadt, Germany operates as MilliporeSigma in the US and Canada SAFETY DATA SHEET. Sigmaaldrich.com. https://www.sigmaaldrich.com/CA/en/sds/ALDRICH/A89200 (accessed 2023-09-25). (2) The life science business of Merck KGaA, Darmstadt, Germany operates as MilliporeSigma in the US and Canada SAFETY DATA SHEET. Sigmaaldrich.com. https://www.sigmaaldrich.com/CA/en/sds/sial/79255 (accessed 2023-09-25). (3) The life science business of Merck KGaA, Darmstadt, Germany operates as MilliporeSigma in the US and Canada SAFETY DATA SHEET. Sigmaaldrich.com. https://www.sigmaaldrich.com/CA/en/sds/sial/242381 (accessed 2023-09-25). (4) The life science business of Merck KGaA, Darmstadt, Germany operates as MilliporeSigma in the US and Canada SAFETY DATA SHEET. Sigmaaldrich.com. https://www.sigmaaldrich.com/CA/en/sds/ALDRICH/N6885 (accessed 2023-09-25). (5) The life science business of Merck KGaA, Darmstadt, Germany operates as MilliporeSigma in the US and Canada SAFETY DATA SHEET. Sigmaaldrich.com. https://www.sigmaaldrich.com/CA/en/sds/sial/459836 (accessed 2023-09-25). (6) The life science business of Merck KGaA, Darmstadt, Germany operates as MilliporeSigma in the US and Canada SAFETY DATA SHEET. Sigmaaldrich.com. https://www.sigmaaldrich.com/CA/en/sds/sial/296090 (accessed 2023-09-25). (7) Rev., G. H. S. Safety Data Sheet. Fishersci.com. https://beta- static.fishersci.com/content/dam/fishersci/en_US/documents/programs/education/regulatory- documents/sds/chemicals/chemicals-t/S25611.pdf (accessed 2023-09-25). (8) The life science business of Merck KGaA, Darmstadt, Germany operates as MilliporeSigma in the US and Canada SAFETY DATA SHEET. Sigmaaldrich.com. https://www.sigmaaldrich.com/CA/en/sds/SIAL/105910 (accessed 2023-09-25). (9) Sigmaaldrich.com. https://www.sigmaaldrich.com/CA/en/sds/sial/05105 (accessed 2023-09- 25). (10) The life science business of Merck KGaA, Darmstadt, Germany operates as MilliporeSigma in
the US and Canada SAFETY DATA SHEET. Sigmaaldrich.com. https://www.sigmaaldrich.com/CA/en/sds/sial/307521 (accessed 2023-09-25).

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