text: what is pharmaceutical grade isopropanol?   as far as i know there is no such thing as "pharmaceutical grade" for any reagent.  reagents exist in hundreds of specific and defined 'grades'.  the pharmaceutical industry uses a wide variety of different grades of reagents.  isopropanol, for example, would probably be used as an 'acs grade', 'hplc grade' or 'usp grade'.  the grade required would depend on the specific use or purpose of the reagent.  is it being used for cleaning?  to dissolve something in solution?  as a reagent in analytical analysis?  as far as i know, there is no general 'pharmaceutical grade.' reagent grades specifically define purity and impurity levels of a given reagent.  there are many many different grades!  try searching "reagent grades" on the internet to get a better idea of all the different grades available.