A drug X, used to treat antibiotics, is recrystallized from ethanol/water mixture. The recrystallized form loses solvent at 20 and 150 degree C. Which technique is used to study solvent loss? Thermogravimetric analyses
A. Differential Scanning Calorimetry
B. a X-ray diffraction
C. Small-angle neutron scattering
D. dynamic light scattering