Specially Denatured Alcohol (Tax-Free)

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We offer a wide range of Specially Denatured Alcohol (SDA) 190 & 200 proof ethanols. These products are not subject to Federal Tax in the U.S., as they are Pure Ethanols denatured with co-solvents in order to render them "unfit to drink". As with the Pure Ethanol, SDA requires a valid Industrial Alcohol User permit be provided to Sigma-Aldrich prior to purchase.