Ethanol (Ethyl Alcohol)

Ethanol has applications in industry, pharma manufacturing, research and academia as a reagent as well as a solvent. Because of its relatively low toxicity compared with other alcohols and ability to dissolve non-polar substances, ethanol can be used as a solvent in medical drugs, perfumes, and vegetable essences such as vanilla. In organic synthesis, ethanol serves as versatile intermediate.

Reagent Alcohol (Tax-Free)

Reagent Alcohol (RGA) is a widely used denatured ethanol. Since it is denatured (5 parts by gallon of IPA to 95 parts SDA 3A), it is also not subject to Federal Tax in the U.S.. However a letter of registration or "Letterhead Approval" from the TTB must be on file for quantities greater than 4L and provided to Sigma-Aldrich prior to purchase.

Product #


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793213 Reagent Alcohol 70%
793183 Reagent Alcohol 95%
793175 Reagent Alcohol ACS reagent

Ethanol (Tax-Paid)

Purchasing 190- and 200-proof ethanol has never been easy, until now! Because these ethanols are federally regulated, a TTB permit is required to purchase 190- and 200-proof ethanol. Sigma-Aldrich takes the hassle out of this process for you. No TTB paperwork is needed, nor any records for you to keep. Sigma-Aldrich immediately pays the federal excise tax (200-proof pure alcohol=$27.00/gallon).

We offer tax-paid ethanol in a variety of grades to meet your application and available in amber glass bottles and Sure/Seal bottles.

Product #

Product Name

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459844 Ethyl alcohol, Pure 200 proof, ACS reagent, ≥99.5% 99.5 ACS reagent
493511 Ethyl alcohol, Pure 190 proof, ACS spectrophotometric grade, 95.0% 95 ACS reagent, Spectroscopy
459836 Ethyl alcohol, Pure 200 proof, anhydrous, ≥99.5% 99.5 Anhydrous
459828 Ethyl alcohol, Pure 200 proof, HPLC/spectrophotometric grade   HPLC, Spectroscopy
E7023 Ethyl alcohol, Pure 200 proof, for molecular biology   Molecular Biology Reagent
493538 Ethyl alcohol, Pure 190 proof, meets USP testing specifications 94.9, 96 NF, USP
493546 Ethyl alcohol, Pure 200 proof, meets USP testing specifications    
E7148 Ethyl alcohol, Pure 190 proof, for molecular biology