Dimethylethanolamine (DMAE) is a colorless, flammable liquid with a fishy odour. It is used in a variety of industrial applications including the production of resins, pharmaceuticals and cosmetics. It is also used as a corrosion inhibitor and defoamer.

DMAE is a tertiary amine, which means it has three nitrogen atoms. Nitrogen atoms are basic, which means they can react with acids to form salts. This property makes DMAE useful as a corrosion inhibitor.

DMAE is also a surfactant, which means it lowers the surface tension of water. This property makes it useful as a defoamer.

DMAE can form crystals as it cools. The crystals are usually white or colorless and can be needle-like or flake-like. Crystals form when DMAE molecules are arranged in a regular pattern. Crystals are harmless, but can make DMAE difficult to work with.

If you use DMAE, it is important to be aware of the possibility of crystal formation. If you see crystals in DMAE, you can try to dissolve them by heating the liquid. If the crystals don’t dissolve, you can try filtering them out.

It is important to note that DMAE is a hazardous substance. It is flammable and irritating to skin and eyes. It is also a potential carcinogen. If you are handling DMAE, be sure to wear personal protective equipment (PPE) and follow all safety precautions.