40 C.F.R. § 180.920

Current through November 30, 2024
Section 180.920 - [Effective 2/26/2025] Inert ingredients used pre-harvest; exemptions from the requirement of a tolerance

The following materials are exempted from the requirement of a tolerance when used in accordance with good agricultural practice as inert (or occasionally active) ingredients in pesticide formulations applied to growing crops only:

Table 1 to § 180.920

Inert ingredients Limits Uses
Acetic acid, 2-ethylhexyl ester (CAS Reg. No. 103-09-3)Not to exceed 50% by weight in pesticide formulationSolvent/Co-solvent
Acetophenone (CAS Reg. No. 98-86-2)Attractant, solvent, co-solvent
Adenosine (CAS Reg. No. 58-61-7)Maximum of 0.5% of formulationSynergist
Adipic acid (CAS Reg. No. 124-04-9)Acidification or buffering agent; pH regulator
Alder barkSeed germination stimulator
Alkyl (C12-C16) dimethyl ammonio acetate (CAS Reg. Nos. 683-10-3, 2601-33-4 and 693-33-420% by weight in pesticide formulationSurfactant
[ALPHA]-Alkyl (minimum C6 linear, branched, saturated and/or unsaturated)-[OMEGA]-hydroxypolyoxyethylene polymer with or without polyoxypropylene, mixture of di- and monohydrogen phosphate esters and the corresponding ammonium, calcium, magnesium, monoethanolamine, potassium, sodium, and zinc salts of the phosphate esters; minimum oxyethylene content is 2 moles; minimum oxypropylene content is 0 moles (CAS Reg. Nos. 9046-01-9, 37280-82-3, 39464-66-9, 42612-52-2, 50643-20-4, 52019-36-0, 58318-92-6, 60267-55-2, 61837-79-4, 67711-84-6, 68070-99-5, 68071-35-2, 68071-17-0, 68130-47-2, 68186-37-8, 68186-36-7, 68311-02-4, 68425-73-0, 68458-48-0, 68511-37-5, 68610-65-1, 68585-36-4, 68649-29-6, 68815-11-2, 68908-64-5, 68891-13-4, 73038-25-2, 78330-24-2, 108818-88-8, 154518-39-5, 317833-96-8, 873662-29-4, 936100-29-7, 936100-30-0)Not to exceed 30% of pesticide formulationSurfactants, related adjuvants of surfactants
N-alkyl(C8-C18) dimethylamidopropylamines where the alkyl group is linear and may be saturated and/or unsaturated (CAS Reg. Nos. 109-28-4, 3179-80-4, 7651-02-7, 22890-10-4, 22890-11-5, 39669-97-1, 45267-19-4, 68140-01-2, 1147459-12-8, 146987-98-6)Not to exceed 20% by weight in herbicide formulationsSurfactants, related adjuvants of surfactants
N-alkyl (C8-C18) primary amines and their acetate salts where the alkyl group is linear and may be saturated and/or unsaturated (CAS Reg. Nos. 61790-57-6, 61790-58-7, 61790-59-8, 61790-60-1, 61788-46-3, 61790-33-8, 68155-38-4)Concentration in formulated end-use products not to exceed 10% by weight in herbicide products, 4% by weight in insecticide products, and 4% by weight in fungicide productsSurfactants, related adjuvants of surfactants
N,N-Bis-[ALPHA]-ethyl-[OMEGA]-hydroxypoly(oxy-1,2-ethanediyl) C8-C18 saturated and unsaturated alkylamines; the poly(oxy-1,2-ethanediyl) content is 2-60 moles (CAS Reg. Nos. 10213-78-2, 25307-17-9, 26635-92-7, 26635-93-8, 288259-52-9, 58253-49-9, 61790-82-7, 61791-14-8, 61791-24-0, 61791-26-2, 61791-31-9, 61791-44-4, 68155-33-9, 68155-39-5, 68155-40-8,70955-14-5, 73246-96-5, 1266162-49-5)Not to exceed 25% in herbicide formulations and 10% in insecticide and fungicide formulationsSurfactants, related adjuvants of surfactants
N,N-Bis-[ALPHA]-ethyl-[OMEGA]-hydroxypoly(oxy-1,2-ethanediyl/oxy(methyl-1,2-ethanediyl) C8-C18 saturated and unsaturated alkylamines; the poly(oxy-1,2-ethanediyl/oxy(methyl-1,2-ethanediyl) content is 2-60 moles (CAS Reg. Nos. 68213-26-3, 68153-97-9, 75601-76-2)Not to exceed 25% in herbicide formulations and 10% in insecticide and fungicide formulationsSurfactants, related adjuvants of surfactants
Aluminum sulfateSafener adjuvant
Ammonium acetate (CAS No. 631-61-8)15%Buffering Agent.
Ammonium chloride (CAS Reg. No. 12125-02-9)Carrier/nutrient
Ammonium formate (CAS Reg. No. 540-69-2)Complexing or fixing agent
Ammonium nitrate (CAS Reg. No. 6484-52-2)Adjuvant/ intensifier for herbicides
Ammonium polyphosphate (CAS Reg. No. 68333-79-9)Sequestrant, buffer, or surfactant
Quaternary ammonium compounds, benzylbis(hydrogenated tallow alkyl)methyl, bis(hydrogenated tallow alkyl)di-methylammonium salts with saponite (CAS Reg. No. 1588523-05-0)Not to exceed 1.0% by weight of pesticide formulationSuspending or structuring agent
Quaternary ammonium compounds, benzylbis(hydrogenated tallow alkyl)methyl, bis(hydrogenated tallow alkyl)di-methylammonium salts with sepiolite (CAS Reg. No. 1574487-61-8)Not to exceed 2.0% by weight of pesticide formulation, asbestos free and containing less than 1% crystalline silicaSuspending or structuring agent
Amylopectin, 2-hydroxypropyl ether, acid- (CAS Reg. No. 2756130-86-4)For seed treatment use onlyBinder, carrier, film-former.
Trans-anethole (CAS Reg. No. 4180-23-8)Not to exceed 3% in pesticide formulationsFragrance.
Baicalin anhydrous (CAS Reg. No. 21967-41-9)10% by weightStabilizer.
Baicalin hydrate (CAS Reg. No. 206752-33-2)10% by weightStabilizer.
Barium sulfateCarrier
1,4-Benzenedicarboxylic acid, dimethyl ester, polymer with 1,4-butanediol, adipic acid, and hexamethylene diisocyanate, minimum number average molecular weight (in amu) 30,000 (CAS Reg. No. 55231-08-8)For use in honeybee hive miticide formulationsComponent of controlled release agent
1,2-Benzisothiazolin-3-oneNot more than 0.1% of formulation. Not more than 0.02 lb to be applied per acrePreservative/stabilizer
Benzyl acetate (CAS Reg. No. 140-11-4)Solvent
Beta Cyclodextrin, Methyl Ethers (CAS Reg. No. 128446-36-6)40% by weightStabilizer and solvent
Boric acidSequestrant
Buffalo gourd root powder (Cucurbita foetidissima root powder); or, Zucchini juice (Cucurbita pepo juice) or Hawkesbury melon Citrullus lanatus.No more than 2.5 lbs/acre/season (3.4 gm/acre/season of Cucurbitacin)Gustatory stimulant
Butyl stearateDefoamer
[GAMMA]-ButyrolactoneSolvent
C.I. Pigment Blue #15 (CAS Reg. No. 147-14-8; containing no more than 50 ppm polychlorinated biphenyls (PCBs))For seed treament use onlyDye, coloring agent
C.I. Pigment Green #7 (CAS Reg. No. 1328-53-6; containing no more than 50 ppm polychlorinated biphenyls (PCBs))For seed treatment use onlyDye, coloring agent
C.I. Pigment Red #112 (CAS Reg. No. 6535-46-2)Seed treatment use only. Limited to 10% w/w of pesticide formulationColoring agent
C.I. Pigment Violet #23 (CAS Reg. No. 6358-30-1; containing no more than 20 ppb of polychlorinated dibenzo-p-dioxins and/or polychlorinated dibenzofurans)For seed treatment use onlyDye, coloring agent
C.I. Pigment Yellow 1 (CAS Reg. No. 2512-29-0)Not to exceed 10% (weight/weight) in pesticide formulationColorant
Calcium Pantothenate (CAS Reg. No. 137-08-6)0.1% by weight in pesticide formulationsEnzyme cofactor
Calcium formate (CAS Reg. No. 544-17-2)Carrier
Calcium gluconate (CAS Reg. No. 299-28-5)Sequestrant
Camphor (CAS Reg. No. 76-22-2)Not more than 5% weight to weight (w/w) of pesticide formulationsDeodorant, melting point adjustment
Carbon Black (CAS Reg. No. 1333-86-4)For seed treatment use onlyColorant
Carbonic acid, dipotassium salt (CAS Reg. No. 584-08-7)Buffering agent
Carbonic acid, dipotassium salt, trihydrate (CAS Reg. No. 18662-52-7)Buffering agent
Carboxymethyl guar gum sodium salt (CAS Reg. No. 39346-76-4)Without limitationThicker/drift reduction agent
Carboxymethyl-hydroxypropyl guar (CAS Reg. No. 68130-15-4)Without limitationThicker/drift reduction agent
Carous chloride10 ppm in formulationTagging agent
Carrageenan, conforming to 21 CFR 172.260 Not more than 0.15% of pesticide formulationThickener and stabilizer for pesticide formulations applied to seeds before planting
ChlorobenzeneContains not more than 1% impurities. Not for use after edible parts of plant begin to form. Do not graze livestock in treated areas within 48 hours after applicationSolvent, cosolvent
5-Chloro-2-methyl-4-isothiazolin-3-one (in combination with 2-methyl-4-isothiazolin-3-one)Not more than 0.0022% (22.5 ppm) in the formulation; 0.00022% (or 2.25 ppm) in the final solution applied to growing cropsPreservative
Choline chloride (CAS Reg. No. 67-48-1)As a solvent
Choline hydroxide (CAS Reg No. 123-41-1)Without limitationNeutralizer
Cis-isomer of 1-(3-chloroallyl)-3,5,7-triaza-1-azoniaadamantane chloride (CAS Reg. No. 51229-78-8)Maximum of 0.14% by weight of formulationPreservative
Coco alkyl dimethyl amines (CAS Reg. No. 61788-93-0)Not to exceed 0.5% in pesticide formulationEmulsifier
Copper naphthenateNot more than 2.5% of formulation; application limited to before edible portions of plants begin to formMercaptan scavenger in technical pesticide
Cumene sulfonic acid and its ammonium, calcium, magnesium, potassium, sodium and zinc salts (CAS Reg. Nos. 15763-76-5, 16066-35-6, 164524-02-1, 28085-69-0, 28348-53-0, 28631-63-2, 32073-22-6, 37475-88-0, 37953-05-2, and 90959-88-9)Surfactant, related adjuvant of surfactant
CyclohexaneSolvent, cosolvent
CyclohexanoneDo.
Cysteine (CAS Reg. No. 52-90-4)Maximum of 0.5% of formulationSynergist
D&C Green No. 6Dye
D&C Red No. 17, technical gradeDye
D&C Red No. 33 (CAS Reg. No. 3567-66-6); meeting the specifications listed in 21 CFR 74.1333 Dye
D&C Violet No. 2, technical gradeNot more than 0.005% of pesticide formulationDye
Decanamide, N,N-dimethyl (CAS Reg. No. 14433-76-2)Emulsifier, solvent, cosolvent
Dextrin, hydrogen 1-octenylbutanedioate (CAS Reg. No. 68070-94-0)For seed treatment use onlyBinder, carrier, film-former.
Diammonium phosphate (CAS Reg. No. 7783-28-0)Buffer, surfactant
dibenzylidene sorbitol (32647-67-9)Thinning agent
DiethanolamineStabilizer, inhibitor for formulations used before crop emerges from soil
Diethanolamine salts of alkyl (C8-C24) benzenesulfonic acid (CAS Reg. Nos. 26545-53-9, 67815-95-6, 67889-94-5, 67889-95-6, 68259-34-7, 68478-47-7, 68567-68-0, 68815-34-9, 68815-37-2, 68891-02-1, 68953-97-9, 84989-15-1, 85338-09-6, 90194-39-1, 90194-40-4, 90218-08-9)Not to exceed 7% of pesticide formulationSurfactants, related adjuvants of surfactants.
Diethylene glycolDeactivator, adjuvant for formulations used before crop emerges from soil
Diethylene Glycol (CAS No. 111-46-6)Without limitationSolvent, stabilizer and/or antifreeze
Diethylene glycol and diethylene glycol monobutyl, monoethyl, and monomethyl ethersDeactivator for formulations used before crop emerges from soil, stabilizer
Diethylene glycol mono butyl ether (CAS Reg. No. 112-34-5)Without limitationPesticide inert ingredient as a solvent, stabilizer and/or antifreeze
Diethylene Glycol MonoEthyl Ether (CAS Reg. No. 111-90-0)Without limitationSolvent, stabilizer and/or antifreeze
Dimethylaminopropylamine, isopropylamine, ethanolamine, and triethanolamine salts of alkyl (C8-C24) benzenesulfonic acid (CAS Reg. Nos. 3088-30-0, 12068-12-1, 26264-05-1, 26836-07-7, 27323-41-7, 55470-69-4, 58089-99-9, 61886-59-7, 61931-76-8, 67924-05-4, 68110-32-7, 68259-35-8, 68411-31-4, 68442-72-8, 68567-69-1, 68584-24-7, 68584-25-8, 68648-81-7, 68648-96-4, 68649-00-3, 68815-30-5, 68815-35-0, 68910-32-7, 68953-93-5, 68953-98-0, 70528-84-6, 72391-21-0, 84961-74-0, 85480-55-3, 85480-56-4, 85995-82-0, 90194-42-6, 90194-53-9, 90194-54-0, 90194-55-1, 90218-09-0, 90218-11-4, 90218-35-2, 96687-54-6, 99924-49-9, 121617-08-1, 157966-96-6, 193562-36-6, 319926-68-6, 877677-48-0, 1093628-27-3)Surfactants, related adjuvants of surfactants.
3,6-Dimethyl-4-octyn-3,6-diolIn pesticide formulations, for soil prior to planting or to plants before edible parts formSurfactants, related adjuvants of surfactants
Dimethyl sulfoxide (CAS Reg. No. 67-68-5)Solvent/co-solvent.
Dipotassium hydrogen phosphateBuffering agent
Dipropylene glycol monomethyl etherStabilizer
Douglas-fir bark, groundSolid diluent, carrier
Dysprosium chloride10 ppm in formulationTagging agent
1,2-ethanediamine,N,N,N", N"-tetramethyl-, polymer with 1,1'-oxybis[2-chloroethane] (CAS Reg. No. 31075-24-8)For use in pesticide formulations applied to cotton or wheat onlyAdjuvant or water conditioner
(S,S)-Ethylenediaminedisuccinic acid (CAS Reg. No. 20846-91-7)Sequestrant or chelating agent
Ethylene glycolAntifreeze, deactivator for all pesticides used before crop emerges from soil and in herbicides before or after crop emerges
Ethylene glycol (CAS Reg. No. 107-21-1)Without limitationPesticide inert ingredient as a solvent, stabilizer and/or antifreeze.
Ethylene glycol monobutyl ether
2-EthylhexanolCosolvent, defoamer, solvent for all pesticides used before crop emerges from soil and in herbicides before or after crop emerges
Europic chloride10 ppm in formulationTagging agent
FD&C Blue No. 1 (CAS Reg. No. 3844-45-9)For seed treatment use onlyDye, coloring agent
FD&C Blue No. 1, methyl-polyethylene glycol derivative (CAS Reg. No. 9079-34-9)For seed treatment use only; Number average molecular weight (in amu) is greater than 1,000; Not to exceed 5% of the formulated pesticide productDye, coloring agent
FD&C Blue No. 1, polyethylene glycol derivative (CAS Reg. No. 9079-33-8)For seed treatment use only; Number average molecular weight (in amu) is greater than 1,000; Not to exceed 5% of the formulated pesticide productDye, coloring agent
FD&C Red No. 40 (CAS Reg. No. 25956-17-6)For seed treatment use only. Not to exceed 2% by weight of the pesticide formulationDye, coloring agent
Ferric chlorideNot greater than 2% of suspending, dispersing agent, pesticide formulation
FluoroapatiteSolid diluent, carrier
Folic acid (CAS Reg. No. 59-30-3)Maximum of 0.5% of formulationSynergist
Gluconic acid (and sodium salt)Sequestrant
l-Glutamic acid (C5 H9 NO4; CAS Reg. No. 56-86-0)Seet treatment use onlyPlant nutrient
[alpha]-D-glucopyranoside, 2-ethylhexyl 6-O-[alpha]-D glucopyranosyl- (CAS Reg. No. 330980-61-5)Surfactant
[alpha]-D-glucopyranoside, 2-ethylhexyl (CAS Reg. No. 125590-73-0)Surfactant
Glutamine (CAS Reg. No. 56-85-9)Maximum of 0.5% of formulationSynergist
Glycerol-propylene oxide polymer (CAS Reg. No. 25791-96-2)Component in water-soluble film
Glyceryl triacetateStabilizer
Glyceryl tris-12-hydroxystearateFlow control agent
Glycine betaine (CAS Reg. No. 107-43-7)Plant nutrient
GraphiteTreatment aid for seeds
Guar hydroxypropyltrimethylammonium chloride (CAS Reg. No. 71329-50-5)Thickener/drift reduction agent
HexamethylenetetramineStabilizer for carriers in solid pesticide formulations
Hydrolyzed vegetable proteins from soyNot to exceed 25% of pesticide formulationpH adjusting agent, surfactant, adhesive.
2-(2'-hydroxy-3',5'-di-tert-amylphenyl) benzotriazole (CAS Reg. No. 25973-55-1)Maximum concentration of 0.6% in insecticide formulations applied to adzuki beans, canola, chickpeas, cotton, faba beans, field peas, lentils, linola, linseed, lucerne, lupins, mung beans, navy beans, pigeon peas, safflower, sunflower, and vetchUltraviolet (UV) stabilizer
2-Hydroxy-4-n-octoxybenzophenone (CAS Reg. No. 1843-05-6)Not more than 0.2 pt of pesticide formulationLight stabilizer
Hydroxypropyl guar gumThickener
2-Hydroxypropyl starch (CAS Reg. No. 9049-76-7)Adjuvant
Isobornyl acetateSolvent
Isobutyl alcoholDo.
Isobutylene-butene copolymersFor soil application onlyBinder
IsooctadecanolNot more than 2% of pesticide formulationDefoaming agent
Konjac glucomannan (CAS Reg. No. 37220-17-0)Not to exceed 1.0% by weight in pesticide formulationThickener
Lanthanum chloride10 ppm in formulationTagging agent.
Magnesium nitrate (in combination with 2-methyl-4-isothiazolin-3-one and 5-chloro-2-methyl-4-isothiazolin-3-one)NonePreservation
Maleic acidFor pesticide formulations applied to apples with a minimum preharvest interval of 21 daysStabilizer
Maleic anhydride (CAS Reg. No. 108-31-6)Not to exceed 3.5% in pesticide formulations; or for pesticide formulations applied to apples with a minimum preharvest interval of 21 daysStabilizer
Malic acid (CAS Reg. No. 6915-15-7)Buffering and stabilizing agent
Manganese carbonatePlant nutrient
D-mannose (CAS Reg. No. 3458-28-4)Sequestrant, binder, filler
Mesityl oxideNot for use after edible parts of plant begin to form. Do not graze livestock in treated areas within 48 hours after applicationSolvent, cosolvent
Methionine (CAS Reg. No. 59-51-8)Maximum of 0.5% of formulationSynergist
Methyl alcoholDo.
Methyl ethyl ketoneSurfactant
Methyl p- hydroxybenzoatePreservative for formulations
Methyl isobutyl ketoneSolvent, cosolvent
2-Methyl-4-isothiazolin-3-one (in combination with 5-chloro-2-methyl-4-isothiazolin-3-one)Not more than 0.0022% (22.5 ppm) in the formulation; 0.00022% (or 2.25 ppm) in the final solution applied to growing cropsPreservative
Mono-, di-, and trimethylnapthalenesulfonic acids and napthalenesulfonic acids formaldehyde condensates, ammonium and sodium salts (CAS Reg. Nos. 9008-63-3, 9069-80-1, 9084-06-4, 36290-04-7, 91078-68-1, 141959-43-5, 68425-94-5)Surfactants, related adjuvants of surfactants
Methyl oleateSurfactant
2-Methyl-2,4-pentanediolSolvent for formulations used before crop emerges from soil
Methyl poly(oxyethylene)C8-C18 alkylammonium chlorides where the poly(oxyethylene) content is n = 2-15 and where C8-C18 alkyl is linear and may be saturated or unsaturated (CAS Reg. Nos. 3010-24-0, 18448-65-2, 70750-47-9, 22340-01-8, 67784-77-4, 64755-05-1, 61791-10-4, 28724-32-5, 28880-55-9, 68187-69-9, 68607-27-2, 60687-90-3Concentration in formulated end use products not to exceed 10% by weight in herbicide products and 5% by weight in all other pesticide productsSurfactants, related adjuvants of surfactants
N-Methylpyrrolidone (CAS Reg. No. 872-504)Solvent, cosolvent
Mixed phytosterols (consisting of campesterol, sitosterol and stigmasterol, with minor amounts of associated plant sterols) derived from edible vegetable oilsSurfactant
Mono- and bis-(1H, 1H, 2H, 2H-perfluoroalkyl) phosphates where the alkyl group is even numbered and in the C6-C12 rangeNot more than 0.5% of pesticide formulation. Expires February 9, 2008Surfactant, related adjvants of surfactants
Mono- and dialkyl (C8-C18) methylated ammonium chloride compounds, where the alkyl group(s) (C8-C18) are derived from coconut, cottonseed, soya, tallow, or hogfat fatty acidsSurfactants, related adjuvants of surfactants
Morpholine 4-C6-12 Acyl Derivatives (CAS Reg. No. 887947-29-7)As a solvent
Nicotinamide (CAS Reg. No. 98-92-0)Not to exceed 0.5% by weight of pesticide formulation as synergist; not to exceed 5% by weight of pesticide formulation as corrosion inhibitorSynergist, corrosion inhibitor
[ALPHA]-(p-Nonylphenyl)-[OMEGA]-hydroxypoly(oxyethylene); produced by the condensation of 1 mole of nonylphenol (nonyl group is a propylene trimer isomer) with an average of 4-14 or 30-100 moles of ethylene oxide; if a blend of products is used, the average number of moles of ethylene oxide reacted to produce any product that is a component of the blend shall be in the range 4-14 or 30-100Surfactant
Octanamide, N,N-dimethyl (CAS Reg. No. 1118-92-9)Emulsifier, solvent, cosolvent
[ALPHA]-Oleoyl-[OMEGA]-(oleoyloxy) poly(oxyethylene) derived from [ALPHA]-hydro-[OMEGA]-hydroxypoly(oxyethylene) (molecular weight 600 amu)Component of defoamers
Oxo-decyl acetate (CAS reg. No. 108419-33-6)Solvent
Oxo-heptyl acetate (CAS Reg. No. 90438-79-2)Solvent
Oxo-hexyl acetate (CAS Reg. No. 88230-35-7)Solvent
Oxo-nonyl acetate (CAS Reg. No. 108419-34-7)Solvent
Oxo-octyl acetate (CAS Reg. No. 108419-32-5)Solvent
Oxo-tridecyl acetate (CAS Reg. No. 108419-35-8)Solvent
Phenol, 2-(2H-benzotriazol-2-yl)-6-dodecyl-4-methyl-, (CAS Reg. No. 23328-53-2)Not more than 10% by weight of pesticide formulationsUV stabilizer.
Phenolsulfonic acid-formaldehyde-urea condensate and its sodium saltApplied to growing plants onlyDispersant surfactant
(Phthalocyaninato (2)) copper; (C.I. pigment blue No. 15)When used as a colorant in low-density plastic filmsColoring agent, pigment
Pigment red 48For seed treatment use onlyDye
[ALPHA]-PineneNot more than 2% of formulation by weightStabilizer
Poly(oxy-1,2-ethanediyl), [ALPHA]-isotridecyl-[OMEGA]-methoxy (CAS Reg. No. 345642-79-7)At a maximum of 10% in formulationSurfactant
Poly(oxy-1,2-ethanediyl), [ALPHA]-(3-carboxy-1-oxosulfopropyl)-[OMEGA]-hydroxy-, (C10-C12)-alkyl ethers, disodium salts, polyoxylene content averages 4-5 moles (CAS Reg. No. 68815-56-5)Not to exceed 0.125% for seed treatment use onlySurfactant.
Poly(oxy-1,2-ethanediyl), [ALPHA]-(3-carboxy-1-oxosulfopropyl)-[OMEGA]-hydroxy-, (C10-C16)-alkyl ethers, disodium salts, polyoxyethylene content averages 5 moles (CAS Reg. No. 68954-91-6)Not to exceed 0.125% for seed treatment use onlySurfactant
Poly(oxy-1,2-ethanediyl), [ALPHA], [ALPHA]'-{[[4-[(3-sulfophenyl)azo]phenyl]imino]di-2,1-ethanediyl}bis[[OMEGA]-hydroxy-, monosodium saltNot to exceed 20% by weight of pesticide formulationColorant.
Poly(oxyethylene) adducts of mixed phytosterols (such sterols to consist of campesterol, stigmasterol and sitosterol with minor amounts of associated plant sterols) derived from edible vegetable oils; polyoxyethylene content averaging 5-26 molesSurfactant, related adjuvants
Polyoxyethylene polyoxypropylene mono(di-sec-butylphenyl) ether (CAS Reg. No. 69029-39-6)Limited to herbicide formulations only, and to no more than 30% by weight in herbicide formulations intended for application to turfSurfactants, related adjuvants of surfactants
Poly(oxyethylene) (5) sorbitan monooleateSurfactants, related adjuvants of surfactants
Polysorbate 60, conforming to 21 CFR 172.836 Surfactant
Potassium acetate (CAS Reg. No. 127-08-2)Nutrient
Potassium dihydrogen phosphateBuffering agent
2-Propanamine, compound with [ALPHA]-phosphono-[OMEGA]-butoxypoly (oxy-1,2-ethanediyl) (2:1) (CAS Reg. No. 431040-31-2)Not more than 15% in the formulated productSurfactant
2-Propanamine, compounds with polyethylene glycol dihydrogen phosphate C8-10- alkyl ether (2:1) (CAS Reg. No. 431062-72-5)Not more than 15% in the formulated productSurfactant
1-Propanaminium, 3-amino-N-(carboxymethyl)-N,N-dimethyl-, N-coco acyl derivatives, hydroxides, inner salts (CAS Reg. No. 61789-40-0)10% w/w in pesticide formulationSurfactant.
1,2-Propanediol, 3-[3-[1, 3, 3, 3-tetramethyl-1-[(trimethylsilyl)oxy]-1-disiloxyanyl] propoxy]- (CAS Reg. No. 70280-68-1)Not to exceed 5% by weight of pesticide formulationAntifoaming agent
Propylene glycol monomethyl etherSolvent
Pyridoxine (CAS Reg. No. 65-23-6)Maximum of 0.5% of formulationSynergist
2-Pyrrolidinone, 1-butyl- (CAS Reg. No. 3470-98-2)Not to exceed 30% by weight of pesticide formulationSolvent/cosolvent
Rosin, dark wood (as defined in 21 CFR 178.3870(a)(1)(v) )Surfactants, related adjuvants of surfactants
Rosin, gumDo.
Rosin, tall oilDo.
Cell Walls of Saccharomyces cerevisiaeCarrier.
Scandium chloride10 ppm in formulationTagging agent
Sodium bisulfate (CAS Reg. No. 7681-38-1)Acidifying/buffering agent
Sodium 1,4-dicyclohexyl sulfosuccinateSurfactants, related adjuvants of surfactants
Sodium 1,4-dihexyl sulfosuccinate (CAS Reg. No. 3006-15-3)Surfactants, related adjuvants of surfactants
Sodium dihydrogen phosphate (CAS Reg. No. 7558-80-7) conforming to 21 CFR 182.6778 Buffering agent
Sodium 1,4-diisobutyl sulfosuccinate (CAS Reg. No. 127-39-9)Surfactants, related adjuvants of surfactants
Sodium 1,4-dipentyl sulfosuccinate (CAS Reg. No. 922-80-5)Surfactants, related adjuvants of surfactants
Sodium metaborateSequestrant
Sodium molybdatePlant nutrient
Sodium nitrateSolid diluent
Sodium nitriteNot more than 3% of pesticide formulationStabilizer, inhibitor.
Sodium o-phenylphenateNot more than 0.1% of pesticide formulationPreservative for formulation
Sodium salt of the insoluble fraction of rosinSurfactants, related adjuvants of surfactants
Sodium salts of N-alkyl (C8-C18)-beta-iminodipropionic acid where the C8-C18 is linear and may be saturated and/or unsaturated (CAS Reg. Nos. 3655-00-3, 61791-56-8, 14960-06-6, 26256-79-1, 90170-43-7, 91696-17-2, 97862-48-1)Concentration in formulated end-use products not to exceed 30% by weight in pesticide formulationsSurfactants, related adjuvants of surfactants
Sodium tetraborateNot more than 2% of pesticide formulationBuffering agent; corrosion inhibitor
Starch, 1-octenylbutanedioate, aluminum salt (CAS Reg. No. 9087-61-0)For seed treatment use onlyFlow aid, flow enhancer, anti-caking agent
Sulfonic acids, C13-17-sec-alkane, sodium salts (CAS Reg. No. 85711-69-9)Not to exceed 40% by weight in non-residential use pesticide formulation onlySurfactant
Sulfonic acids, C14-17-sec-alkane, sodium salts (CAS Reg. No. 97489-15-1)Not to exceed 40% by weight in non-residential pesticide formulation onlySurfactant
Tallowamine, ethoxylated, mixture of dihydrogen phosphate and monohydrogen phosphate esters and the corresponding ammonium, calcium, potassium, and sodium salts of the phosphate esters, where the poly(oxyethylene) content averages 2-20 moles (CAS Reg. No. 68308-48-5)Not to exceed 20% of pesticide formulationSurfactants, related adjuvants of surfactants
TanninDispersing agent
[ALPHA]-terpineol (CAS Reg. No. 98-55-5)Not to exceed 5% in pesticide formulationsSolvent
Tertiary butylhydroquinoneAntioxidant
1-Tetradecanamine, N,N-dimethyl-, N-oxide (CAS Reg. No. 3332-27-2)Component in water-soluble film
Tetraethylene glycol (CAS Reg. No. 112-60-7)Solvent
N,N,N',N"-Tetrakis-(2-hydroxypropyl) ethylenediamine (CAS Reg. No. 102-60-3)Concentration in formulated end-use products not to exceed 20% by weight in pesticide formulationsStabilizer for formulations
2,4,7,9-Tetramethyl-5-decyne 4,7-diolIn pesticide formulations, for application to soil prior to planting or to plants before edible parts formSurfactants, related adjuvants of surfactants
Tetrapotassium pyrophosphate (CAS Reg. No. 7320-345)Not to exceed 10% of formulationSequestrant, anticaking agent, conditioning agent
Thiamine Mononitrate (CAS Reg. No. 532-43-4)0.1% by weight in pesticide formulationsEnzyme cofactor
Tin oxide (CAS Reg. No. 18282-10-5)Not to exceed 40% by weight for use in seed treatment pesticide formulations onlyColorant
Titanium dioxide (CAS Reg. No. 13463-67-7)Pigment, colorant, carrier
Toluenesulfonic acid and its ammonium, calcium, magnesium, potassium, sodium, and zinc saltsSolvent, cosolvent
TriethanolamineStabilizer, inhibitor for formulations used before crop emerges from soil
Triethanolamine (CAS Reg. No. 102-71-6)Stabilizer, inhibitor
Triethylene glycolDeactivator
Triethyl phosphateStabilizer for formulations used before crop emerges from soil
Trimethylolpropane (CAS Reg. No. 77-99-6)Not to exceed 15% by weight of the filmComponent in water-soluble film
[ALPHA]-[2,4,6-Tris[1-(phenyl)ethyl]phenyl]-[OMEGA]-hydroxy poly(oxyethylene), the poly(oxyethylene) content averages 4-150 moles)Not more than 15% of the formulationSurfactant.
[ALPHA]-[2,4,6-Tris[1-(phenyl)ethyl]phenyl]-[OMEGA]-hydroxy poly(oxyethylene); mixture of monohydrogen and dihydrogen phosphate esters and the corresponding ammonium, calcium, magnesium, potassium, sodium, and zinc salts, the poly(oxyethylene) content averages 4-150 moles)Not more than 15% of the formulationDo.
[ALPHA]-[2,4,6-Tris[1-(phenyl)ethyl]phenyl]-[OMEGA]-hydroxy poly(oxyethylene) sulfate, and the corresponding ammonium, calcium, magnesium, potassium, sodium, and zinc salts, the poly(oxyethylene) content averages 4-150 molesNot more than 15% of the pesticide formulationDo.
Tryptophan (CAS Reg. No. 73-22-3)Maximum of 0.5% of formulationSynergist
Valeric acid, normalNot more than 2% in pesticide formulationsStenching agent or odorant
XyleneSolvent, cosolvent
Xylenesulfonic acid its ammonium calcium, magnesium, potassium, sodium, and zinc saltsSurfactants, related adjuvants of surfactants
Yucca extract from Yucca schidigeraWetting agent
Ytterbium chloride10 ppm in formulationTagging agent
Yttrium chloride10 ppm in formulationTagging agent
Zinc orthophosphatePlant nutrient and safener
Zinc stearate, conforming to 21 CFR 182.5994 and 582.5994 Flow control agent

40 C.F.R. §180.920

69 FR 23124 , Apr. 28, 2004
81 FR 7477 , 2/12/2016; 81 FR 21478 , 4/12/2016; 80 FR 72593 , 5/18/2016; 81 FR 31526 , 5/19/2016; 81 FR 78927 , 11/10/2016; 82 FR 27026 , 6/13/2017; 82 FR 36341 , 8/4/2017; 83 FR 19976 , 5/7/2018; 83 FR 37443 , 8/1/2018; 83 FR 559754 , 11/9/2018; 83 FR 62479 , 12/4/2018; 84 FR 2459 , 2/7/2019; 84 FR 13554 , 4/5/2019; 84 FR 52778 , 10/3/2019; 85 FR 70497 , 70500, 11/5/2020; 86 FR 24735 , 5/10/2021; 86 FR 71391 , 12/16/2021; 87 FR 26687 , 26691, 26694, 5/5/2022; 87 FR 61534 , 10/12/2022; 87 FR 67374 , 11/8/2022; 88 FR 4732 , 1/25/2023; 88 FR 21107 , 4/10/2023; 87 FR 26502 , 5/1/2023; 89 FR 4562 , 1/24/2024; 89 FR 40396 , 5/10/2024; 89 FR 70527 , 2/26/2025

For FEDERAL REGISTER citations affecting § 180.920, see the List of CFR Sections Affected, which appears in the Finding Aids section of the printed volume and at www.govinfo.gov.