CFR › Title 27 › Part 21 › §21.4727 CFR §21.47Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗Copy link(a)Formula. To every 100 gallons of alcohol add:(b)Authorized uses.(1)As a solvent:(2)As a fluid:(3)Miscellaneous uses: