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Acetic Acid

Acetic acid (CAS 64-19-7) is a clear, colorless, organic liquid with the chemical formula CH3COOH. Browse our semiconductor grade Puranal™ products.

Acetic acid is less polar than water and can help in achieving proper wetting of slightly hydrophobic silicon wafers. Acetic acid has a lower dielectric constant than water (6.15 for CH3COOH versus 81 for H2O). This produces less dissociation of the HNO3 and yields a higher oxidation power for the etch.

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Acetic Acid

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