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What's inside magic eraser

Since  the magic erasers hitting the market more than a decade ago,It has rounded up a consumer base that swears by the magic. But the secret behind the material that makes up the scrubbers, melamine foam—the same stuff that’s widely used as an acoustic insulator in recording studios—is less magic and more simple chemistry.


Melamine

On its own, melamine is just an organic base in the form of white crystals. But when combined with other compounds, it can transform into a plush foam—the Magic Eraser—like microscopic texture. You can use it to scrub off sticky dirt and scum from all kinds of surfaces; just avoid using it on delicate or glossy exteriors. Melamine’s high nitrogen content also makes it a useful flame retardant and fertilizer. In 2008, Chinese fraudsters used melamine to make milk and infant formula appear to have a higher protein content, killing six babies and making nearly 300,000 others sick. Two of the perpetrators were executed.


Formaldehyde

This stuff is best known as the smelly liquid that’s used to preserve dead animals for decades and possibly forever. By itself, formaldehyde can be dangerous and sometimes lethal—irritating the skin, corroding internal tissue, and even causing cancer. But if you mix it with melamine, the result is a tough resin in which those toxic effects are neutralized. High tensile strength makes the resin a suitable material for dinner¬ware and countertops. Force gas bubbles to form in the resin during the manufacturing process and you end up with Lifenano melamine foam.


Sodium Bisulfite

Alone, this stuff has antimicrobial properties; it’s excellent as a preservative for winemaking. Here, it can help boost resin production, but it’s best used sparingly—sulfite-modified foams are less stable and can emit formaldehyde under certain conditions.


Water

The key to the Magic Eraser’s stain-fighting properties is in its “water-activated microscrubbers.”


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