In the reaction mixture, what is the function of the sulfuric acid in the nitrating mixture? Khai Hong Wong Experiment 4: Preparation of 4-nitroacetanilide Safety This experiment uses concentrated acids which are corrosive and may cause burns if they come into contact with your skin. Experiment 4: Preparation of 4-nitroacetanilide Aim To prepare 4-nitroacetanilide from acetanilide by electrophilic aromatic substitution.
Conclusions: Never trust a lab partner, always double check things. Even if you have an excellent working relationship, double fucking check. Home of the 0x27 Finger Discount Synthesis of p-Nitroacetanilide from Acetanilide 12 Sep This is another lab report dug up from the archives of lab reports for the fun of it. This experiment may be selected for inclusion in the poster, so you should consider photographing your apparatus and product. The solution was let sit in an ice bath then, trying to recover a product. The p-bromo acetanilide is obtained as colourless crystals, m.
Photo: Dissolving. Record the melting point of your purified product and comment on its value with reference to the literature value cited in the pre-lab quesitons. The crude product is filtered with suction, the residue washed with cold water, recrystallized from rectified spirit, dried in an oven at oC and the percentage yield is calculated. Experiment Note: Glacial acetic acid is corrosive and harmful.
Drops of acid spilt on the bench are also a common secondary cause of acid burns, therefore ensure that any spillage is cleaned up immediately. Discuss Abstract The invention relates to a preparation method of organic compounds, and especially relates to a 3-aminomethoxy acetanilide II preparation method which includes the following steps: 1, mixing 3-nitromethoxy acetanilide I , a solvent and a catalyst in a reaction kettle, adding an additive or not, heating to DEG C, adding a reducing agent within hours, and reacting completely; 2, hotly filtering, recycling the additive, and applying mechanically into next batch of reaction; and 3, distilling the filtrate for recovery of methanol, applying mechanically into next batch of reaction, and cooling and filtering residual liquid to obtain 3-aminomethoxy acetanilide II and a liquid waste. Prepare a nitrating mixture by cautiously adding 1 mL of concentrated nitric acid to 3 mL of cold concentrated sulfuric acid directly from the dispensers into a small, dry flask. Related Posts.