Special Industrial Solvents (27 CFR §20.112)

Are not intended for sale through retail channels for sale as consumer commodities for personal or household use.

  • Instead, they are intended as ingredients or solvents in manufacturing processes.
  • When they are used to manufacture an article for sale, sufficient ingredients should be added to change the composition and character of the special industrial solvent.
  • They cannot be reprocessed into another solvent intended for sale if the new solvent would contain more than 50% alcohol by volume.

Contain 100 gallons of SDA Formula 1, 3-A, or 3-C and:

  • No less than 1 gallon of methyl isobutyl ketone (MIBK), methyl n-butyl ketone, nitropropane, ethylene glycol monoethyl ether or propylene glycol monomethyl ether (PGME); and
  • No less than 5 gallons of ethyl acetate, isopropyl alcohol, or methanol; and
  • May contain other ingredients in addition to those listed above.


Page last reviewed/updated: 12/12/2018