180.920—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:
| Inert ingredients | Limits | Uses |
|---|---|---|
| Acetophenone | Attractant | |
| Adenosine (CAS Reg. No. 58-61-7) | Maximum of 0.5% of formulation | Synergist |
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| Alder bark | Seed germination stimulator | |
| Alkyl (C12-C16) dimethyl ammonio acetate (CAS Reg. Nos. 683-10-3, 2601-33-4 and 693-33-4 | 20% by weight in pesticide formulation | Surfactant |
| α-Alkyl (minimum C6 linear, branched, saturated and/or unsaturated)-ω-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 formulation | Surfactants, 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 products | Surfactants, related adjuvants of surfactants |
| N,N-Bis-α-ethyl-ω-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) | Not to exceed 25% in herbicide formulations and 10% in insecticide and fungicide formulations | Surfactants, related adjuvants of surfactants |
| N,N-Bis-α-ethyl-ω-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 formulations | Surfactants, related adjuvants of surfactants |
| Aluminum sulfate | Safener adjuvant | |
| 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 | |
| Barium sulfate | Carrier | |
| 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 formulations | Component of controlled release agent |
| 1,2-Benzisothiazolin-3-one | Not more than 0.1% of formulation. Not more than 0.02 lb to be applied per acre | Preservative/stabilizer |
| Boric acid | Sequestrant | |
| 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 stearate | Defoamer | |
| γ-Butyrolactone | Solvent | |
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| C.I. Pigment Blue #15 (CAS Reg. No. 147-14-8; containing no more than 50 ppm polychlorinated biphenyls (PCBs)) | For seed treament use only | Dye, 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 only | Dye, coloring 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 only | Dye, coloring agent |
| Camphor (CAS Reg. No. 76-22-2) | Not more than 5% weight to weight (w/w) of pesticide formulations | Deodorant, melting point adjustment |
| Carbon Black (CAS Reg. No. 1333-86-4) | For seed treatment use only | Colorant |
| 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 | |
| Carous chloride | 10 ppm in formulation | Tagging agent |
| Carrageenan, conforming to 21 CFR 172.260 | Not more than 0.15% of pesticide formulation | Thickener and stabilizer for pesticide formulations applied to seeds before planting |
| Chlorobenzene | Contains 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 application | Solvent, 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 crops | Preservative |
| Choline chloride (CAS Reg. No. 67-48-1) | As a solvent | |
| Choline hydroxide (CAS Reg No. 123-41-1) | Without limitation | Neutralizer |
| 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 formulation | Preservative |
| Copper naphthenate | Not more than 2.5% of formulation; application limited to before edible portions of plants begin to form | Mercaptan scavenger in technical pesticide |
| Cyclohexane | Solvent, cosolvent | |
| Cyclohexanone | Do. | |
| Cysteine (CAS Reg. No. 52-90-4) | Maximum of 0.5% of formulation | Synergist |
| D&C Green No. 6 | Dye | |
| D&C Red No. 17, technical grade | Dye | |
| 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 grade | Not more than 0.005% of pesticide formulation | Dye |
| Decanamide, N,N-dimethyl (CAS Reg. No. 14433-76-2) | Emulsifier, solvent, cosolvent | |
| Diammonium phosphate (CAS Reg. No. 7783-28-0) | Buffer, surfactant | |
| dibenzylidene sorbitol (32647-67-9) | Thinning agent | |
| Diethanolamine | Stabilizer, inhibitor for formulations used before crop emerges from soil | |
| Diethanolamine salts of alkyl (C8-C24) benzenesulfonic acid (CAS Reg. Nos. 26545-53-9 and 68953-97-9) | Not to exceed 7% of pesticide formulation | Surfactants, related adjuvants of surfactants |
| Diethylene glycol | Deactivator, adjuvant for formulations used before crop emerges from soil | |
| Diethylene Glycol (CAS No. 111-46-6) | Without limitation | Solvent, stabilizer and/or antifreeze |
| Diethylene glycol and diethylene glycol monobutyl, monoethyl, and monomethyl ethers | Deactivator for formulations used before crop emerges from soil, stabilizer | |
| Diethylene glycol mono butyl ether (CAS Reg. No. 112-34-5) | Without limitation | Pesticide inert ingredient as a solvent, stabilizer and/or antifreeze |
| Diethylene Glycol MonoEthyl Ether (CAS Reg. No. 111-90-0) | Without limitation | Solvent, stabilizer and/or antifreeze |
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| Dimethylaminopropylamine, isopropylamine, ethanolamine, and triethanolamine salts of alkyl (C8-C24) benzenesulfonic acid (CAS Reg. Nos. 26264-05-1, 27323-41-7, 55470-69-4, 68411-31-4, 68584-24-7, 68584-25-8, 68648-81-7, 68648-96-4, 68649-00-3, 68910-32-7, 68953-93-5, 90194-42-6, 90194-53-9, 90218-35-2, 157966-96-6, 319926-68-6, 877677-48-0, 1093628-27-3) | Surfactants, related adjuvants of surfactants | |
| 3,6-Dimethyl-4-octyn-3,6-diol | In pesticide formulations, for soil prior to planting or to plants before edible parts form | Surfactants, related adjuvants of surfactants |
| Dimethyl sulfoxide | Solvent or cosolvent for formulations used before crop emerges from soil or prior to formation of edible parts of food plants | |
| Dipotassium hydrogen phosphate | Buffering agent | |
| Dipropylene glycol monomethyl ether | Stabilizer | |
| Douglas-fir bark, ground | Solid diluent, carrier | |
| Dysprosium chloride | 10 ppm in formulation | Tagging 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 only | Adjuvant or water conditioner |
| (S,S)-Ethylenediaminedisuccinic acid (CAS Reg. No. 20846-91-7) | Sequestrant or chelating agent | |
| Ethylene glycol | Antifreeze, 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 limitation | Pesticide inert ingredient as a solvent, stabilizer and/or antifreeze. |
| Ethylene glycol monobutyl ether | ||
| 2-Ethylhexanol | Cosolvent, defoamer, solvent for all pesticides used before crop emerges from soil and in herbicides before or after crop emerges | |
| Europic chloride | 10 ppm in formulation | Tagging 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 product | Dye, 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 product | Dye, 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 formulation | Dye, coloring agent |
| Ferric chloride | Not greater than 2% of suspending, dispersing agent, pesticide formulation | |
| Fluoroapatite | Solid diluent, carrier | |
| Folic acid (CAS Reg. No. 59-30-3) | Maximum of 0.5% of formulation | Synergist |
| Gluconic acid (and sodium salt) | Sequestrant | |
| l-Glutamic acid (C5 H9 NO4; CAS Reg. No. 56-86-0) | Seet treatment use only | Plant 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 formulation | Synergist |
| Glycerol—propylene oxide polymer (CAS Reg. No. 25791-96-2) | Component in water-soluble film | |
| Glyceryl triacetate | Stabilizer | |
| Glyceryl tris-12-hydroxystearate | Flow control agent | |
| Graphite | Treatment aid for seeds | |
| Hexamethylenetetramine | Stabilizer for carriers in solid pesticide formulations | |
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| 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 vetch | Ultraviolet (UV) stabilizer |
| 2-Hydroxy-4-n-octoxybenzophenone (CAS Reg. No. 1843-05-6) | Not more than 0.2 pt of pesticide formulation | Light stabilizer |
| Hydroxypropyl guar gum | Thickener | |
| Isobornyl acetate | Solvent | |
| Isobutyl alcohol | Do. | |
| Isobutylene-butene copolymers | For soil application only | Binder |
| Isooctadecanol | Not more than 2% of pesticide formulation | Defoaming agent |
| Lanthanum chloride | 10 ppm in formulation | Tagging agent. |
| Magnesium nitrate (in combination with 2-methyl-4-isothiazolin-3-one and 5-chloro-2-methyl-4-isothiazolin-3-one) | None | Preservation |
| Maleic acid and maleic anhydride | For pesticide formulations applied to apples with a minimum preharvest interval of 21 days | Stabilizer |
| Manganese carbonate | Plant nutrient | |
| Mesityl oxide | Not for use after edible parts of plant begin to form. Do not graze livestock in treated areas within 48 hours after application | Solvent, cosolvent |
| Methionine (CAS Reg. No. 59-51-8) | Maximum of 0.5% of formulation | Synergist |
| Methyl alcohol | Do. | |
| Methyl ethyl ketone | Surfactant | |
| Methyl p- hydroxybenzoate | Preservative for formulations | |
| Methyl isobutyl ketone | Solvent, 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 crops | Preservative |
| 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 oleate | Surfactant | |
| 2-Methyl-2,4-pentanediol | Solvent 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, 60687-90-3 | Concentration in formulated end use products not to exceed 10% by weight in herbicide products and 5% by weight in all other pesticide products | Surfactants, 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 oils | Surfactant | |
| Mono- and bis-(1H, 1H, 2H, 2H-perfluoroalkyl) phosphates where the alkyl group is even numbered and in the C6-C12 range | Not more than 0.5% of pesticide formulation. Expires February 9, 2008 | Surfactant, 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 acids | Surfactants, related adjuvants of surfactants | |
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| Morpholine 4-C6-12 Acyl Derivatives (CAS Reg. No. 887947-29-7) | As a solvent | |
| Nicotinamide (CAS Reg. No. 98-92-0) | Maximum of 0.5% of formulation | Synergist |
| α-(p-Nonylphenyl)-ω-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 30-100 | Surfactant | |
| Octanamide, N,N-dimethyl (CAS Reg. No. 1118-92-9) | Emulsifier, solvent, cosolvent | |
| α-Oleoyl-ω-(oleoyloxy) poly(oxyethylene) derived from α-hydro-ω-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 | Solvent, cosolvent | |
| Phenol, 2-(2H-benzotriazole-2-yl)-6-dodecyl-4-methyl; (CAS Reg. No. 23328-53-2) | 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 vetch | Ultraviolet (UV) stabilizer |
| Phenolsulfonic acid—formaldehyde—urea condensate and its sodium salt | Applied to growing plants only | Dispersant surfactant |
| (Phthalocyaninato (2)) copper; (C.I. pigment blue No. 15) | When used as a colorant in low-density plastic films | Coloring agent, pigment |
| Pigment red 48 | For seed treatment use only | Dye |
| α-Pinene | Not more than 2% of formulation by weight | Stabilizer |
| Poly(oxy-1,2-ethanediyl), α-isotridecyl-ω-methoxy (CAS Reg. No. 345642-79-7) | At a maximum of 10% in formulation | Surfactant |
| 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 moles | Surfactant, 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 turf | Surfactants, related adjuvants of surfactants |
| Poly(oxyethylene) (5) sorbitan monooleate | Surfactants, related adjuvants of surfactants | |
| Polysorbate 60, conforming to 21 CFR 172.836 | Surfactant | |
| Potassium dihydrogen phosphate | Buffering agent | |
| 2-Propanamine, compound with α-phosphono-ω-butoxypoly (oxy-1,2-ethanediyl) (2:1) (CAS Reg. No. 431040-31-2) | Not more than 15% in the formulated product | Surfactant |
| 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 product | Surfactant |
| Propylene glycol monomethyl ether | Solvent | |
| Pyridoxine (CAS Reg. No. 65-23-6) | Maximum of 0.5% of formulation | Synergist |
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| Rosin, dark wood (as defined in 21 CFR 178.3870(a)(1)(v) ) | Surfactants, related adjuvants of surfactants | |
| Rosin, gum | Do. | |
| Rosin, tall oil | Do. | |
| Scandium chloride | 10 ppm in formulation | Tagging agent |
| Sodium bisulfate (CAS Reg. No. 7681-38-1) | Acidifying/buffering agent | |
| Sodium 1,4-dicyclohexyl sulfosuccinate | Surfactants, 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 metaborate | Sequestrant | |
| Sodium molybdate | Plant nutrient | |
| Sodium nitrate | Solid diluent | |
| Sodium nitrite | Not more than 3% of pesticide formulation | Stabilizer, inhibitor. |
| Sodium o-phenylphenate | Not more than 0.1% of pesticide formulation | Preservative for formulation |
| Sodium salt of the insoluble fraction of rosin | Surfactants, 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 formulations | Surfactants, related adjuvants of surfactants |
| Sodium tetraborate | Not more than 2% of pesticide formulation | Buffering agent; corrosion inhibitor |
| 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 formulation | Surfactants, related adjuvants of surfactants |
| Tannin | Dispersing agent | |
| Tertiary butylhydroquinone | Antioxidant | |
| 1-Tetradecanamine, N,N-dimethyl-, N-oxide (CAS Reg. No. 3332-27-2) | Component in water-soluble film | |
| 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 formulations | Stabilizer for formulations |
| 2,4,7,9-Tetramethyl-5-decyne 4,7-diol | In pesticide formulations, for application to soil prior to planting or to plants before edible parts form | Surfactants, related adjuvants of surfactants |
| Tetrapotassium pyrophosphate (CAS Reg. No. 7320-345) | Not to exceed 10% of formulation | Sequestrant, anticaking agent, conditioning agent |
| Titanium dioxide (CAS Reg. No. 13463-67-7) | Pigment/coloring agent in plastic bags used to wrap growing banana (preharvest), colorant on seeds for planting | |
| Toluenesulfonic acid and its ammonium, calcium, magnesium, potassium, sodium, and zinc salts | Solvent, cosolvent | |
| Triethanolamine | Stabilizer, inhibitor for formulations used before crop emerges from soil | |
| Triethanolamine (CAS Reg. No. 102-71-6) | Stabilizer, inhibitor | |
| Triethylene glycol | Deactivator | |
| Triethyl phosphate | Stabilizer for formulations used before crop emerges from soil | |
| Trimethylolpropane (CAS Reg. No. 77-99-6) | Not to exceed 15% by weight of the film | Component in water-soluble film |
| α-[2,4,6-Tris[1-(phenyl)ethyl]phenyl]-ω-hydroxy poly(oxyethylene), the poly(oxyethylene) content averages 4-150 moles) | Not more than 15% of the formulation | Surfactant. |
| α-[2,4,6-Tris[1-(phenyl)ethyl]phenyl]-ω-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 formulation | Do. |
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| α-[2,4,6-Tris[1-(phenyl)ethyl]phenyl]-ω-hydroxy poly(oxyethylene) sulfate, 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 pesticide formulation | Do. |
| Tryptophan (CAS Reg. No. 73-22-3) | Maximum of 0.5% of formulation | Synergist |
| Valeric acid, normal | Not more than 2% in pesticide formulations | Stenching agent or odorant |
| Xylene | Solvent, cosolvent | |
| Xylenesulfonic acid its ammonium calcium, magnesium, potassium, sodium, and zinc salts | Surfactants, related adjuvants of surfactants | |
| Yucca extract from Yucca schidigera | Wetting agent | |
| Ytterbium chloride | 10 ppm in formulation | Tagging agent |
| Yttrium chloride | 10 ppm in formulation | Tagging agent |
| Zinc orthophosphate | Plant nutrient and safener | |
| Zinc stearate, conforming to 21 CFR 182.5994 and 582.5994 | Flow control agent | |