1. The problem statement, all variables and given/known data In the reaction between salicylic acid and acetic anhydride, if you use a water bath at 90°C instead of 50°C. The final product (acetylsalicylic acid) was tested for the presence of phenols with ferric chloride. This test was negative (no color observed); however, the melting point of the dry product was 122-125°C. 2. Relevant equations What are the reasons for these results? 3. The attempt at a solution I'm not sure for the analytical reasons, but here what I thought. The product came out purity because it has no color on the test with ferric chloride. But the meltng point was lower than the tabulated melting point which is 135-136°C for pure Aspirin. It could be in result of high temperature of water bath, so the high temperature passed the right eqilibrium. Am I right? Please, if anyone knows the better answer, could you explain to me? I really appreciate it. Thank you in advance!!