40 CFR §1090.1235

1. (a)Certified ethanol denaturant producers. In addition to the requirements in § 1090.1205, a certified ethanol denaturant producer must keep records of the following information for each batch of certified ethanol denaturant:
   1. (1)The batch volume.
   2. (2)The batch number.
   3. (3)The date the batch was produced or imported.
   4. (4)The PTD for the batch.
   5. (5)The sulfur content of the batch.
2. (b)Parties that take custody of ethanol denaturants. All parties that take custody of denaturant designated as suitable for use in the production of DFE under § 1090.270(b) must keep records of the following information:
   1. (1)The PTD for each batch of denaturant.
   2. (2)The volume percent at which the denaturant was added to ethanol, as applicable.