364 JOURNAL OF THE SOCIETY OF COSMETIC CHEMISTS ! I ! i I i i i ! i i ! 20 30 40 50 60 70 80 90 100 110 120 130 Temperature (C) Figure3a I i i i i i i • 20 30 40 50 60 70 80 90 100 110 120 130 Temperature (C) Figure3b Figure 3. DSC thermograms of commercially available whitening powders: 3a: Company A. 3b: Company B. 3c: Company C. 3d: Company D.
DETERMINATION OF ASCORBYL DIPALMITATE 365 20 30 40 50 60 70 80 90 100 110 120 130 Temperature (C) Figure 3c I & I I I I ! I I ! I T 20 30 40 50 60 70 80 90 100 110 120 130 Temperature (C) Figure 3d Figure 3 (continued)
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