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NOP Issues Final Amendment to National List

On December 26, 2018, the NOP published a final rule that amends the National List of Allowed and Prohibited Substances. Please see below for a brief summary, and contact your Certification Specialist for more information or if you have questions.

IMPLEMENTATION: The rule will be fully implemented on January 28, 2019, except that the amendments for the substances ivermectin, flavors, cellulose, and glycerin will be implemented December 27, 2019. The rule also suggests that the amendment for carnauba wax will be implemented on December 27, 2019.


  • Parasiticides for livestock production to be allowed for fiber bearing animals when used a minimum of 36 days prior to harvesting of fleece or wool that is to be sold, labeled, or represented as organic.

The milk withhold periods for Fenbendazole and Moxidectin to be reduced to 2 days for cattle and 36 days for other species. Ivermectin to be prohibited in livestock production.

  • Methionine for poultry production to be restricted at the following maximum rates as averaged per ton of feed over the life of the flock: Laying chickens—2 pounds; broiler chickens–-2.5 pounds; turkeys and all other poultry—3 pounds.
  • Lidocaine and Procaine in livestock production to be restricted at shorter withdrawal periods: 8 days for slaughter stock and 6 dairy for dairy stock.
  • Flavors in processing and handling to be restricted so that certified organic flavors are required when commercially available.
  • Carnauba waxand Glycerin in processing and handling to be re-classified as agricultural, thereby requiring the use of certified organic forms when commercially available.
  • Rotenone to be prohibited in crop production.

New allowed materials

o   Magnesium oxide and Squid by-products to be allowed in crop production

o   Activated charcoal, Calcium borogluconate, Calcium propionate, Kaolin pectin, Mineral Oil, Injectable nutrients, Propylene glycol, Acidified sodium chlorite, and Zinc sulfate to be allowed in livestock production.

o   Hypochlorous Acid to be allowed as chlorine material for crops, livestock, handling

o   Potassium lactate and Sodium lactate to be allowed in processing and handling

Other amendments:

o   Micronutrients (Crops): allows alternative methods for documenting a deficiency

o   Chlorhexidine (Livestock): allows for medical uses

o   Xylazine (Livestock): allows for non-emergency uses

o   Excipients (Livestock): allows APHIS-approved substances

o   Chlorine (Handling): clarifies restriction in accordance with NOP guidance

o   Alginic Acid (Handling): reclassifies as synthetic

o   Cellulose (Handling): clarifies that microcrystalline forms are prohibited

o   Colors (Handling): replaces CAS#s with binomial nomenclature

For more details, please reference the federal register for more details on each amendment.