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Adhesives and Epoxies Q&A

  •   Are methanol, ethanol, acetone, or acetonitrile FDA approved?

    Answered January 25th, 2010 by Expert: Nadine Blaesing, NadineBlaesing

    Methanol, ethanol, acetone, or acetonitrile are generally not FDA approved. These solvents bond plastics together by melting them and allowing them to intermingle. As the solvent evaporates, the plastics harden to form a strong weld. The choice of which grade of solvent to use is up to the medical device manufacturer. Higher-purity grades are more expensive than lower-purity grades. Since the solvent evaporates and does not remain in the bond line, it is not normally tested for biocompatibility.

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