Which isopropyl alcohol (CAS 67-63-0) is best for cleaning?

Which isopropyl alcohol (CAS 67-63-0) is best for cleaning?

70% solution is usually more effective for regular disinfection since it evaporates more slowly, giving it more time to destroy germs.

If you're cleaning electronic devices, however, it's better to choose a higher concentration such as 91% or 99% isopropyl alcohol, which dries quickly and leaves no residue.

For General Surfaces, Glass, and Removing Sticky Residues:

99% IPA is often best because it is a powerful solvent that evaporates quickly without leaving streaks or water spots.

For Electronics (Circuit Boards, Contacts):

99% IPA is essential. The absence of water prevents short-circuiting and corrosion on sensitive electronic components.

For Disinfecting Surfaces (Countertops, Doorknobs):

70% IPA is best because it is a more effective disinfectant.

For Cleaning Optics (Lenses, Mirrors):

A high-purity 99% IPA is recommended to avoid leaving any residue that could smear the optical surface.

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