The crystallization process yielded white crystals (EtOH/H2O); mp 66 68°C; ESI-MS (positive mode), m/ z 503 [M + H]+.
The resulting solid was collected and crystallized from ethanol to give white crystals, yield (78%); m.p. 134 135 °C.
The separated solid was filtered, washed with water and crystallized from ethanol to give white crystals; yield (88%); m.p. 111 113 °C.
The resulting solid was filtered off, washed with water, dried and crystallized from ethanol to give 4 as white crystals, in yield 85%, m.p 196 198 °C.
But it is also a history of the world as seen through those white crystals.
Pure hypophosphorous acid forms white crystals that melt at 26.5 °C (79.7 °F).
Subsequently, opal swellings emerge along her collarbone, and a cluster of white crystals sprouts underneath her arm.
But over time, the frequency increases and people can develop disfiguring and disabling lumps of the chalky white crystals, called tophi.
Introduced into medicine in 1945 and marketed under several trade names, including Benadryl, it occurs as white crystals soluble in water.
In the early 20th century a Japanese chemist found that kombu was an especially rich source of monosodium glutamate – in fact, when you dry kombu, it forms little white crystals of monosodium glutamate (MSG) on its surface.
It snowed on London for much of the night, and when I left the house to walk to the park shortly after 7am, there was a thick layer of white crystals in our street, five inches or so.
