DMEA is a stronger foundation than EA. This means it is more reactive with acids and more likely to form salts. DMEA is also a more effective corrosion inhibitor than EA. This is because it forms a protective layer on metal surfaces that helps prevent corrosion.

EA is a more versatile chemical than DMEA. It is used in a wider range of applications including the production of resins, pharmaceuticals and cosmetics. EA is also used as an antifoaming agent and pH buffering agent.

DMEA is a more expensive chemical than EA. This is because it is more difficult to produce. DMEA is also a more hazardous chemical than EA. It is flammable and irritating to skin and eyes. It is also a potential carcinogen.

To sum up, DMEA and EA are both amines, but their chemical structures and properties are different. DMEA is a stronger base and more effective corrosion inhibitor than EA. EA is a more versatile chemical with a wider range of applications. DMEA is a more expensive and dangerous chemical than EA.