Generic Materials Search: lignin sulfonates

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View the OMRI Generic Materials List Glossary in PDF format here.
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Calcium Lignosulfonate
Allowed with Restrictions
Crop Management Tools and Production Aids
Synthetic
May be used as a chelating agent, dust supressant, and flotation agent as a plant or soil amendment or as a flotation agent in postharvest handling. May be used as either an adjuvant or inert ingredient in combination with active pesticidal ingredients [excluding 25(b) exempt pesticides]. See also INERTS – LIST 4 and LIGNIN SULFONATES. Also known as "lignosulfonic acid, calcium salt."
205.601(j)(4) & 205.601(l)(1)
Chelates
Allowed
Crop Fertilizers and Soil Amendments, Crop Management Tools and Production Aids
Nonsynthetic
Nonsynthetic chelates (including, but not limited to: nonsynthetic amino acids, citric acid, tartaric acid, and other di- and tri- acid chelates) and synthetic lignin sulfonate are allowed. See also AMINO ACIDS – NONSYNTHETIC, the other CHELATES listing, HUMIC ACIDS listings, and LIGNIN SULFONATES. See Glossary for definition of "chelates."
205.105
Dust Suppressants
Allowed
Crop Management Tools and Production Aids
Nonsynthetic
Water and nonsynthetic plant, mineral, or animal based materials are allowed. See also LIGNIN SULFONATES, CALCIUM CHLORIDE, MAGNESIUM CHLORIDE, and PLANT EXTRACTS.
205.105
Lignin Sulfonates
Allowed with Restrictions
Crop Management Tools and Production Aids
Synthetic
Includes these lignosulfonic acids: ammonium lignosulfonate, calcium lignosulfonate, magnesium lignosulfonate, and sodium lignosulfonate. May be used as a chelating agent, dust suppressant, flotation agent, and some may be used as inert ingredients in pesticide formulations. See also INERTS – LIST 4 and INERTS – LIST 3. Synthetic lignin sulfonates are prohibited for use as fertilizers. For example, ammonium lignosulfonate is prohibited for use as a nitrogen fertilizer. Formulated products with ammonium lignosulfonate are subject to two criteria: (1) no nitrogen claims are made on the label and/or (2) the nitrogen contribution of the ammonium lignosulfonate to the formulated product is less than 1%.
205.601(j)(4) & 205.601(l)(1) As plant or soil amendments… Lignin sulfonate—chelating agent, dust suppressant, floatation agent. As floating agents in postharvest handling… Lignin sulfonate.