Acetanilide Lab Report

The purpose of this experiment was to test and observe the physical and chemical properties of gases, and to use these properties to identify these gases when they are encountered.

Personal Protection-Readily absorbed through skin. Very destructive of mucous membranes and upper respiratory tract, eyes and skin. Severe irritant. Sublimes at room temperature to yield dangerous levels of vapour. May cause sensitization. May cause damage to the unborn child.

With an auto-pipet, 400 l of cyclohexanone was placed into a large sample vial. 1000 l of methanol was added with the cyclohexanone. The sample vial was then capped and the solution was swirled gently. In the hood, 1200 l of sodium borohydride reducing solution was added to the solution by adding it in dropwise. The solution was then swirled and vented occasionally for 25 minutes. After letting it sit and swirling the solution, 4.0 ml of cold dilute hydrochloric acid (1 M HCl) was added into the mixture using a calibrated pipet. The aqueous mixture was extracted with the use of three 2.0 ml portions of methylene chloride. With each addition, the mixture was capped, shook gently, ventilated, and given time for the layers to separate. 2013 mg

Short term acute exposure or high short term exposures, over an 8-hour period, are likely to occur during routine operations and worker activities, but could plausibly involve inhalation, ingestion, and/or skin contact. Pollutants that are absorbed into the blood at extreme concentrations generally affects the brain and, depending on the dose, may lead to symptoms ranging from headaches to irritability to death. Direct skin contact with impurities can cause drying, blistering or an allergic type reaction (red and/or itch). If swallowed, contagions can cause irritation of the mucous membranes of the stomach, mouth, and throat. If the fluid is extracted, severe inflammation of the lungs may result (ACGIH, 2005).

After doing so, ten milliliters of the subsequent 'contaminated' mix were set aside in one of the 100 milliliter beakers. Into the remaining solution in the 250 milliliter beaker was added the ten grams of alum, which was then stirred for two minutes with a wooden stir stick, then was set aside for fifteen minutes.

The gas then travels into the collecting tube and condenses through the tube into the collecting test tube. This technique separates pure substances into fractions. In this case, acetone was

Wear safety goggles throughout the experiment to protect your eyes from the explosive nature of the reaction and the corrosive properties of

poured into a clean 100 mL beaker. To dilute the buffer 12.5 mL of DI water was added to the

The reactants are not harmful or toxic but we will handle them gingerly. The gas that

Under the fume hood, I added 8 drops of H_2 〖SO〗_4 to the flask and swirled it. I placed the flask into a hot water bath and maintained the temperature below 70℃. I swirled the flask in a hot water bath. I removed the flask and recorded the observations. I cooled down the flask to room temperature and placed it into an ice-water bath.

The mixture was then placed into a separatory funnel that we had set up. Petroleum ether was used to rinse the solution in the reaction flask. 20ml of saturated sodium chloride were added to the separatory funnel and was shake. The petroleum ether layer was drained into a flask and was dried with anhydrous sodium sulfate. The solution was the filtered by gravity filtration. 1ml of the petroleum ether filtrate was transferred to a 3ml vial. 5 drops of 5% methyl heptadecanoate in chloroform was then added to the vial and mixed. GC analysis was then preformed.

The filtrate was put to another boil to make sure all of the acetanilide was dissolved and allowed to cool. When it was cooled it was then placed in an ice bath. It took a while for any crystals to form; the solution was mostly clear until a stirrer was used to stir the bottom of the flask. The flask was immediately filled with white crystals. The solution was placed in another vacuum filtration to separate the pure acetanilide crystals from the water.

Procedure: Put 400ml of water into each of the two beakers Put ten paper particles into each beaker. Stir the water to get the particles to the bottom of the beaker. Place one beaker onto the hotplate and leave one off of it. Turn the hotplate to 5.

The accompanying materials utilized as a part of these experiments were a 50 mL container, a hot plate, a plastic funnel, aspirator, rubber tubing, a ring stand, a clasp, an iron ring, measuring boat, magnetic stir bar, a 10 mL graduated barrel, few expendable pipettes, a filter flask, a Buchner pipe, filter paper, refined water, a mixing pole, lastly litmus paper. Six chemicals were utilized as a part of the investigations are copper (wire), 6M HNO3, 6M NaOH, 3M H2SO4, Zinc, and 6M HCl. Toward the start of the lab, the 50 mL was connected to the ring stand on top of the hot plate. The iron ring was incorporated into the lab, so it can keep the measuring glass enduring set up. Soon after, a fume hood was amassed utilizing a pipe, elastic tubing, and the suction apparatus. The tube was appended to the ring stand on top of the measuring

Causes skin irritation, serious eye damage, damage to organs through prolonged or repeated exposure; slightly flammable (above 93 C)