Hollow Crystals from Buffer Solutions of Sodium Diethyl Barbiturate.
Buffer Solutions of sodium 5,5'-diethyl barbiturate, after standing at 4 degrees to 8 degrees C for 7 weeks, were observed to contain large tubular crystals. The crystals appear to have the composition of 5.5'-diethyl bairbituric acid. They clan be grown readily from fresh seeded solutions.
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