may be counterfeit‚ not containing the chemicals that it should. Panacetin should be made up of about 50 percent of the unknown component that we previously separated out of Panacetin for testing. We suspect that this unknown compound is either acetanilide or phenacetin‚ both of which can be toxic to humans. It is very important that this component is identified so that no one unknowingly takes the “Panacetin” and becomes ill or dies. This whole experiment is based on purifying and then finding
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a proposed type of pain-killer. Panacetin is typically made up of sucrose‚ aspirin‚ and acetaminophen‚ but the third component in this experiment is unknown. The unknown component is suspected to be a chemical relative of acetaminophen‚ either acetanilide or phenacetin. Using techniques such as extraction‚ evaporation‚ and filtration‚ the three components will be isolated based on their solubilities and acid-base properties. The percent composition of Panacetin will also be deduced based on the masses
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considered “greener” compared to the original bromination procedures. In order to create the alkyl halides‚ which are able to undergo chemical transformations more readily than the carbon-carbon double bond‚ onto the trans-stilbene the addition process of halogenation in needed. The typical reagents that are used‚ such as elemental bromine and liquid bromine‚ are dangerous and highly corrosive‚ so this experiment used an alternative method of bromination.
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supplemental material from Zubrick‚ The Organic Chem Lab Survival Manual. (2) Draw the structure of acetanilide and report relevant physical data. Be sure to cite the source of the data. You should be able to figure out what’s relevant by reading the procedure. (3) Find and report the boiling points of the solvents you will be using for this experiment. (4) Outline the steps in the recrystallization of acetanilide. Recrystallization involves dissolving a solid in a solvent and crystallizing it again‚ taking
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to be present in your sample of Panacetin (aspirin‚ acetanilide‚ and starch)‚ only starch is insoluble in the organic solvent dichloromethane (or methylene chloride)‚ CH2 Cl2. If a sample of Panacetin is dissolved as completely as possible in dichloromethane‚ the insoluble starch can be filtered out‚ leaving acetanilide and aspirin in solution. The purpose of this experiment is to extract the components of Panacetin. Although the acetanilide and aspirin are both quite insoluble in water at room
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last part of the experiment I observed the melting point of Unknown E. After finding the melting point of Unknown E‚ I used 2-Chloroacetemide with a known melting point between 116-118 degrees Celsius and mixed it with Unknown E. I also took Acetanilide with a known melting point of 114.4 degrees Celsius and mixed it with Unknown E. I then observed these melting points to try and determine the identity of Unknown E. Results: Our first known was 100 % Biphenyl. We did three trials. The following
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Name: Bhumiben Shah Date: 31st Jan ‘13 EXPERIMENT # 2 RECRYSTALLIZATION; FILTRATION OBJECTIVES: 1. To perform recrystallization and filtration of given impure organic compound. 2. To purify impure acetanilide using reflux condenser apparatus and Hirsch funnel filtration. 3. To determine percentage recovery of pure material (which is)‚ purified by recrystallization and filtration. SAFETY PRECAUTIONS: 1. Operate the aspirator with the maximum water-flow using a stop cock to
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placed in its own capillary tube‚ and then a 3rd capillary tube contained a 50/50 mixture of both ingredients. The results of their melting points occurred as is what the table says below. Data of MP’s (Celsius) Table 1 Trial #1 Unknown *Acetanilide 50/50 mixtures Shininess Occurred 114 114 114 MP 115.5 115.5 115.5 Trial #2
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Marta Gebregziabher Discussion and Conclusion: Addition reaction of Alkenes: Bromination of (E)-Stilbene 1. Addition reaction is a reaction that involved two molecules that combine to make a larger product. Addition reaction has two main types‚ electrophilic addition and nucleophilic addition. An electrophilic reaction is when the pi bond of a molecule is removed to make two covalent bonds that are bonded to two new molecules. A nucleophillic addition is a reaction that removed the pi bond
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2):  During this experiment‚ we used recrystallization methods in order to help in the purification of the unknown solid‚ as well as drying and vacuum filtration. We then ground the unknown and combined it with different chemicals (such as acetanilide or phenacetin) and used the melting point ranges to determine the identity. We used the Mel-Temp method in order to measure the melting points. (It is important to remember that if a chemical is mixed with a differing chemical‚ the melting point
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