USDA Proposes Expanding Allowance for Elemental Sulfur & Reclassifying Potassium Acid Tartrate

USDA Agricultural Marketing Service (AMS) published a proposed rule to amend the National List of Allowed and Prohibited Substances (National List). The proposed rule is based on public input and recommendations from the National Organic Standards Board (NOSB).
AMS will accept public comments on the proposed rule until June 29, 2018. Comments can be submitted via
At their Fall 2017 meeting in Jacksonville, Florida, the National Organic Standards Board (NOSB) recommended that AMS add elemental sulfur to the National List to treat livestock and livestock housing. Elemental sulfur is currently allowed for use in the production of organic crops as an insecticide, for plant disease control, and as a plant or soil amendment. 
NOSB also recommended reclassifying potassium acid tartrate as an agriculturally derived and non-synthetic. Potassium acid tartrate is derived from wine grapes and is a by-product of wine production. CCOF supported the reclassification of potassium acid tartrate in oral comments to the board.
For questions, please contact Robert Pooler, Standards Division, USDA AMS National Organic Program at (202) 720-3252.