The Making of Barbituric Acid
The ancient good workers, who observed the changes of yin and yang, and examined the temperament of things, in order to make all kinds of exquisite products. The making of barbituric acid today also depends on ingenuity and fine skills.

At the beginning, all kinds of materials need to be prepared. Choose high-quality diethyl malonate, its properties are peaceful, and it is the basis for making acids. Also take urea, which is the key thing, and the purer is the better. With alcohol solvents, depending on their solubility and the appropriate reaction, such as ethanol, it can help all things to dissolve and promote smooth reaction.

As for the place where the reaction is, put a clean device, and it is necessary to be stable. When the temperature is controlled to a certain degree, diethyl malonate and urea quietly meet, and a catalyst is used to introduce it, so that the reaction is fast and orderly. Catalysts, such as a little alkaline substances, can initiate the opportunity of chemical synthesis.

When reacting, observe the situation in detail. Observe the change of color and smell, to know the process. Over time, new things gradually emerge, and their quality gradually coagulates, like fine crystals.

After the reaction is completed, it is purified by an exquisite method. First, use the technique of filtration to remove the coarse impurities. After the method of recrystallization, take an appropriate amount of solvent, warm dissolve the new organism, wait for cooling, and the crystals will dehydrate, and its purity will increase. After drying, remove the dampness, and obtain pure barbituric acid, which is white and pure in quality, and can be used for various purposes.

A good worker is also good at making barbituric acid, good at the selection of materials, clever in the control of reactions, and good at the method of purification, in order to obtain good products to meet all needs.