Melting point apparatus. Magnified view,through a lens,of a sample being analysed for its melting point in a melting point apparatus. The crystals of the sample (orange,in sample tube) are being slowly electrically heated until they melt. The temperature will be obtained from a thermometer (not seen). Several readings will be averaged and compared with standard literature values. In this case the sample is a 2,4-dinitrophenylhydrazone,a product of a reaction to test for the presence of an aldehyde or ketone. The melting point of this product depends on the original chemical being tested for,in this case the aldehyde ethanal | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Andrew Lambert Photography |
Bildgröße: | 4271 px × 3292 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |