Recrystallization & Melting Point Measurement. Identifying a Component of "Panacetin."
Introduction This laboratory experiment was a combination of two separate experiments as stated in the above title. The introduction has been split into 2 separate components to briefly give some background on each procedure.
1
This particular lab is set up with quite a different scenario then that of the last one.
A roving agent for the ASP Corporation has recently Panacetin, which is an analgesic drug. The agent looked carefully at the bottle and it said that they were produced in the United States, but he later noticed a few discrepancies on the bottle and even the tablets themselves which causes a concern that they may be counterfeit. The …show more content…
Methods & Materials
1) See "Separating the Components of Panacetin" in Lehman's Operational Organic Chemistry Lab Manual. (Pgs. 31-32).
2) See page 36 of Lehman's Operational Organic Chemistry Lab Manual
Results To find out the identification of the unknown, 3 separate trials had to be performed to the unknown, some standards and a mixture of 50/50 of the unknown and the standard, or in the case of trial 3, both standards of aspirin & acetylsalicylic acid were combined in a 50/50 mixture. (See Table 1 below). * = Standards. In each trial each separate component was placed in its own capillary tube, and then a 3rd capillary tube contained a 50/50 mixture of both ingredients. The results of their melting points occurred as is what the table says below.
Data of MP's (Celsius) Table 1 Trial #1 Unknown *Acetanilide 50/50 mixtures
Shininess Occurred 114 114 114
MP 115.5 115.5 115.5 Trial #2