Aniline

Introduction: Diazoaminobenzene can be prepared by dissolving two equivalents of aniline in three equivalents of hydrochloric acid and one equivalent of sodium nitrite in aqueous solution followed by two equivalents of sodium acetate. Reaction: Procedure: 1. In a 100 mL conical flask place 20 mL of water, 5 mL conc. HCl and 3.5 g aniline. 2. Shake vigorously and add about 15 g crushed ice. 3. In a test tube dissolve 1.3 g sodium nitrite in 3 mL water. 4. Add this sodium nitrite solution

The final product may mixed with benzenediazonuim chloride if it is cooled so, an orange-red ppt will be formed. Reaction with aniline:

Aniline 93.1 10 0.107 Yes Ethanoic anhydride 102.1 12 0.118 No Glacial ethanoic acid 60.1 25 0.416 No No. moles produced by aniline = 0.107 moles Theoretical mass of N-phenylethanamide = n*MR = 0.107 × 135 = 14.44g Percentage yield = actual yield (g)/theoretical yield (g) × 100 = (11.9/14.44) × 100 = 82%

synthesis below, depicts aniline reacting with acetic anhydride yielding acetanilide and acetic acid (amine to amide). Solubility in H20 25 ° C Solubility in water 75 ° Molar mass g/mol Mass (g) Density g/ml # of moles M.P Acetic Anhydride .12 g/mL 102.09 1.08 Aniline .036 g/mL 93.12 .31 1.02 .00333 Acetanilide <.0056 g/mL 135.16 .41 1.22 .00303 114.3 Safety Hazards Acetic Anhydride Irritant (eyes/skin). Toxic by inhalation, flammable Aniline Irritant (eyes/skin). Harmful

(2013) is to report two cases of methemoglobinemia due to exposure to chemicals in the workplace. Nitrobenzene is used in the production of aniline and other chemicals. Aniline is used for producing dyes, rubber processing chemicals, and antioxidants. Workers are exposed to nitrobenzene by inhalation and exposure to the skin. Nitrobenzene oxidizes the hemoglobin into methemoglobin, which causes methemoglobinemia

Synthesis of Acetaminophen Lab Report Bijal Patel, 20467049 Partner: Poojan Parikh T.A.’s: Long Pu CHEM 123L, Section: 006, Rm: ESC 149 Tuesday February 4, 2013, 2:30pm-5:20pm Experiment Done: Tuesday January 22, 2013 Introduction Acetaminophen was first introduced in 1955 (Richman, 2004). It is an over-the-counter drug that relieves pain and reduced fevers. Acetaminophen is considered an alternate to aspirin since it does not irritate the stomach (Richman, 2004). It also has very

ABSTRACT: Copolymers of aniline and o-phenylenediamine / kaolinite composites were synthesized by 5:1 molar ratios of the respective monomers with different percentages of nanoclay via modified in situ chemical co-polymerization. The results were verified by measuring the FT-IR and UV-vis absorption spectra for PANI-o-PDA / kaolinite composites. The thermal behaviour of the copolymer and composites was studied. PANI-o-PDA / kaolinite composites were thermally more stable than pure copolymer. Surface

The standard curve and derived equation for glucose in the aniline assay were relatively desired. In order to determine these values, half of our data was not included in the analysis. These data points were outliers within the graph and produced undesired results. The standard samples that were included in the data correlated to an R2 of just 0.90849. With this value falling close in proximity to 1.0, it can be determined that a successful standard curve was formed. With this reassurance, it can

The synthesis required that the starting materials contain an aniline and aldehyde in order to produce an imine, which is a primary amine. Using p-chlorobenzaldehyde and p-bromoaniline along with the addition of dichloromethane and, in some cases, a water trapping reagent, the group was able to synthesize 4-bromo-N-[4-(chlorophenyl)methylene]-benzenamine. Three different reactions using the same reactants but different water trapping agents were employed in order to determine which trapping agent

This experiment takes a longer time then other experiments, taking approximately three weeks to complete. It involves a three-step synthesis to make pnitroaniline from aniline and then we will be characterizing our product using the new and useful technique of thin layer chromatography (TLC). We will not be doing the first part of this experiment only parts two and three. Electrophiles are reagents which are attracted to other electrons and in order to bond to nucleophiles, they accept electron pairs