Ethylenediamine Tartrate

Ethylenediamine tartrate, more commonly shortened to EDT, is an industrial strength cleaner. Seven tells Junpei about it in the Operating Room just before the two leave the room's closet. It is an example of the morphogenetic field and has a story similar to glycerin.

Story
After exploring the Operating Room's closet, Junpei and Clover decide to leave it. Clover leaves and Junpei nearly follows, but notices Seven isn't coming with. Rather, Seven is distracted by a brown bottle in his hands. Upon being asked about it, Seven explains that it's an industrial-strength detergent called EDT. He then says that he remembers a story about EDT and explains it to Junpei.

Factory Trouble
About 50 years ago, a factory in America was making large EDT crystals to sell them as a cleaner. After a year of this, water molecules suddenly began attaching themselves to the crystals, forming a mutation called a hydrate. Since a hydrate is useless as a cleaner, the factory threw them out. However, the occurrence began to spread. Even in factories no where near the American one, EDT crystals were being turned into hydrates for no apparent reason. It was then on impossible to make a pure EDT crystal, despite EDT research never making a hydrate until that point.