Incidentally, the three main quantitative methods of analysis are titration (in the Whats in a Medicine?
Chemistry in context) and colorimetric using FeCl3 on hydrolysed aspirin. See if you can find the RSC booklet Aspirin, which gives some good background information and covers analysis by tlc and melting point. Always carry out a risk assessment and check with your teacher before starting any practical work. Risk assessment Before attempting any practical work based on the advice and suggestions on this website, you must do the following. Identify any hazards, assess the risks from these hazards, and then decide appropriate control measures to reduce the risks. You must have these approved by those in authority in your school or college laboratory. Do not rely on what is said on this website. For further guidance see our tutorial on Risk Assessment.