Chapter 2925 — Customs Tariff Headings

FCC Grade Saccharin Sodium Dihydrate

FCC Grade Saccharin Sodium Dihydrate is a hydrated salt form of saccharin, a synthetic sweetener approximately 300-400 times sweeter than sugar. It is a separate chemically defined organic compound, specifically a salt of saccharin, and is intended for direct food use. This product falls under tariff item 2925.11.00 as a saccharin salt, consistent with Chapter 29's coverage of chemically defined organic compounds.

Granulated Saccharin Sodium

Granulated Saccharin Sodium is a free-flowing granular form of saccharin sodium, often with a minimal binder to prevent caking. It remains a salt of saccharin, a chemically defined organic compound, and is used in tabletop sweeteners and bulk food processing. The added binder, if minimal and for preservation or transport, does not remove it from Chapter 29 coverage under tariff item 2925.11.00.

Insoluble Saccharin Powder

Insoluble Saccharin Powder is the acid form of saccharin, a chemically defined organic compound with limited water solubility. It is used in industrial blending for tabletop sweeteners and cosmetics. As the base compound of saccharin, it is classified under tariff item 2925.11.00, which covers saccharin and its salts.

Micronized Saccharin Sodium

Micronized Saccharin Sodium is saccharin sodium processed to a very fine particle size, typically under 10 microns, to improve dissolution in beverages and pharmaceutical liquids. The micronization is a physical process that does not alter the chemical identity of the saccharin salt. It remains a chemically defined organic compound classifiable under tariff item 2925.11.00.

Pharma Saccharin Calcium Salt

Pharma Saccharin Calcium Salt is a calcium salt form of saccharin, used in select pharmaceutical applications for its unique solubility properties. As a salt of saccharin, it is a chemically defined organic compound. It falls under tariff item 2925.11.00, which explicitly covers saccharin and its salts.

Saccharin for Tobacco Flavoring

Saccharin for Tobacco Flavoring is high-purity saccharin used to mask bitterness and enhance flavor in tobacco products. It is a chemically defined organic compound, specifically saccharin, and is supplied for industrial use. This product is classifiable under tariff item 2925.11.00 as saccharin, provided it is not mixed with other substances.

Saccharin Sodium Salt

Saccharin Sodium Salt is the sodium salt form of saccharin, a zero-calorie artificial sweetener with the chemical formula C7H4NNaO3S. It is a separate chemically defined organic compound and a salt of saccharin. This product is explicitly covered by tariff item 2925.11.00, which includes saccharin and its salts.

Sweet'N Low Bulk Saccharin Blend Base

Sweet'N Low Bulk Saccharin Blend Base is primarily saccharin sodium used as a base for pink packet sweeteners, meeting food safety standards. When imported pure, before blending with dextrose or other carriers, it is a saccharin salt. This product falls under tariff item 2925.11.00 as a saccharin salt, provided it is not yet a retail preparation.

Technical Grade Saccharin

Technical Grade Saccharin is a lower-purity saccharin, typically 95-98%, used for industrial applications such as electroplating baths and non-food sweeteners. Despite the lower purity, it is still a chemically defined organic compound, as Chapter 29 allows for impurities. It is classifiable under tariff item 2925.11.00 as saccharin.

USP Grade Saccharin

USP Grade Saccharin is a pharmaceutical-grade insoluble saccharin meeting USP standards for purity, used in tablets, syrups, and oral medications as a non-nutritive sweetener. It is a chemically defined organic compound, specifically the acid form of saccharin. This product is classifiable under tariff item 2925.11.00 as saccharin.

Analytical Glutethimide Standard

Analytical glutethimide standard is a certified reference material of the pure imide compound glutethimide (INN), supplied in precise milligram quantities for HPLC calibration and laboratory analytics. It is a separate chemically defined organic compound, which Chapter 29 Note 1(a) includes in the Chapter, and it is not excluded by any Chapter 29 Note 2 exclusion. As the only tariff item under subheading 2925.12, it is correctly classified here.

Glutethimide Bulk API

Glutethimide bulk API is a pure active pharmaceutical ingredient consisting of the chemically defined imide compound glutethimide (INN), used as an intermediate in downstream drug manufacturing. It meets Chapter 29 Note 1(a) as a separate chemically defined organic compound and is not excluded by Chapter 29 Note 2. Since tariff item 2925.12.00 is the sole item under subheading 2925.12, this bulk API is classified here.

Glutethimide EP Grade

Glutethimide EP Grade is a European Pharmacopoeia compliant form of the pure imide compound glutethimide (INN), used as a pharmaceutical reference standard in analytical testing and quality control. As a separate chemically defined organic compound, it falls under Chapter 29 Note 1(a), and no exclusion in Chapter 29 Note 2 applies. It is correctly classified under tariff item 2925.12.00, the only item in subheading 2925.12.

Glutethimide for Forensic Analysis

Glutethimide for forensic analysis is a specialty standard of the pure imide compound glutethimide (INN), supplied with traceability for toxicology detection methods. It is a separate chemically defined organic compound under Chapter 29 Note 1(a) and is not excluded by Chapter 29 Note 2. As the sole tariff item under subheading 2925.12, this product is classified here.

Glutethimide Research Chemical

Glutethimide research chemical is a high-purity form of the chemically defined imide compound glutethimide (INN), supplied for scientific research and neurological studies. It meets Chapter 29 Note 1(a) as a separate chemically defined organic compound and is not excluded by Chapter 29 Note 2. Since tariff item 2925.12.00 is the only item under subheading 2925.12, this research chemical is classified here.

Glutethimide Sodium Salt

Glutethimide sodium salt is a salt derivative of the imide compound glutethimide (INN), classified with the imide base under Chapter 29 Note 5(C)(1), which directs inorganic salts of organic compounds to the heading appropriate to the organic compound. As a salt of glutethimide, it falls under tariff item 2925.12.00, the sole item in subheading 2925.12. It is a chemically defined compound for research applications.

Glutethimide USP Powder

Glutethimide USP powder is a pharmaceutical-grade form of the pure imide compound glutethimide (INN) meeting USP standards, used primarily in laboratory and research settings. It is a separate chemically defined organic compound under Chapter 29 Note 1(a) and is not excluded by Chapter 29 Note 2. As the only tariff item under subheading 2925.12, this product is classified here.

Glutethimide with Stabilizer

Glutethimide with stabilizer is glutethimide powder with an added anticaking agent necessary for preservation or transport, which Chapter 29 Note 1(f) explicitly includes in the Chapter. The stabilizer does not render the product particularly suitable for a specific use, so it remains a chemically defined imide compound. It is classified under tariff item 2925.12.00, the sole item in subheading 2925.12.

1,8-Naphthalimide

1,8-Naphthalimide is a fused-ring aromatic imide used in fluorescent dyes and optical brighteners. Its polycyclic aromatic structure qualifies under heading 2925 as an aromatic imide, classifiable under tariff item 2925.19.00 as 'other'.

2,2',6,6'-Tetraisopropyldiphenylcarbodiimide (TIPC)

2,2',6,6'-Tetraisopropyldiphenylcarbodiimide (TIPC) is a sterically hindered aromatic carbodiimide used as a coupling agent in peptide synthesis and polymer chemistry. It is a chemically defined aromatic imide, falling under tariff item 2925.19.00 as 'other'.

4-Nitrophthalimide

4-Nitrophthalimide is a nitro-substituted aromatic imide used in dye synthesis and as a pharmaceutical intermediate. It is a chemically defined aromatic imide, classifiable under tariff item 2925.19.00 as 'other'.

Benzamide Imide Derivative

Benzamide Imide Derivative is a specialty aromatic imide from benzamide cyclization used in high-performance polymers. It is a chemically defined aromatic imide, classifiable under tariff item 2925.19.00 as 'other'.

Bis(o-tolyl)carbodiimide

Bis(o-tolyl)carbodiimide is a specific aromatic imide-function compound used primarily as a dehydrating agent and coupling reagent in organic synthesis, particularly for peptide bond formation. It is a chemically defined aromatic imide, classifiable under tariff item 2925.19.00 as 'other'.

Bis(o-tolyl)carbodiimide 98% Pure Technical Grade

Bis(o-tolyl)carbodiimide 98% Pure Technical Grade is supplied for industrial organic synthesis applications like amide coupling. It is a chemically defined aromatic imide, falling under tariff item 2925.19.00 as 'other'.

Bis(o-tolyl)carbodiimide with Stabilizer Additive

Bis(o-tolyl)carbodiimide with Stabilizer Additive includes a stabilizer for transport stability, as permitted by Chapter 29 note (f). It is still classified as bis(o-tolyl)carbodiimide under tariff item 2925.19.00 since the addition is solely for preservation.

BT-93W Wet-Cake Ethylenebistetrabromophthalimide

BT-93W Wet-Cake is ethylenebistetrabromophthalimide in a wet-cake form, containing minimal water for easier handling in flame retardant production. It is a chemically defined aromatic imide compound, falling under tariff item 2925.19.00 as an 'other' aromatic imide.

Ethylenebistetrabromophthalimide Flame Retardant Powder

Ethylenebistetrabromophthalimide (EBTBPI) is a brominated aromatic imide compound used as a high-performance flame retardant additive in plastics and polymers. It is a chemically defined aromatic imide, classifiable under tariff item 2925.19.00 as 'other'.

Flame Guard EBTBPI Additive

Flame Guard EBTBPI is industrial-grade ethylenebistetrabromophthalimide used in flame-retardant formulations for wire insulation and electronic enclosures. It is a chemically defined aromatic imide, falling under tariff item 2925.19.00 as 'other'.

Glutarimide

Glutarimide is a six-membered ring aromatic imide used in pharmaceutical intermediates and as a hypnotic drug precursor. It is a chemically defined cyclic imide, classifiable under tariff item 2925.19.00 as 'other'.

Maleimide

Maleimide is an α,β-unsaturated aromatic imide used in polymer chemistry and pharmaceutical conjugation reactions. It is a chemically defined aromatic imide, classifiable under tariff item 2925.19.00 as 'other'.

Pure Ethylenebistetrabromophthalimide Crystals

Pure Ethylenebistetrabromophthalimide Crystals are high-purity (99.5%+) crystals supplied for synthesis of advanced flame retardants and polymer masterbatches. This aromatic imide is chemically defined and classifiable under tariff item 2925.19.00 as 'other'.

Saytex BT-93 Ethylenebistetrabromophthalimide

Saytex BT-93 is the commercial grade of ethylenebistetrabromophthalimide, a tetrabrominated aromatic imide serving as a non-migrating flame retardant for engineering thermoplastics like nylon and polyolefins. It is a chemically defined aromatic imide, classifiable under tariff item 2925.19.00 as 'other'.

TIPC 2,2',6,6'-Tetraisopropyldiphenylcarbodiimide Lab Grade

TIPC Lab Grade is a high-purity version of 2,2',6,6'-Tetraisopropyldiphenylcarbodiimide for research peptide synthesis. It is a chemically defined aromatic imide, classifiable under tariff item 2925.19.00 as 'other'.

Chlordimeform 95% Powder

Chlordimeform 95% Powder is a high-purity formamidine imine derivative used as an acaricide active ingredient. It is a separate chemically defined organic compound falling under Chapter 29, and specifically under tariff item 2925.21.00, which covers Chlordimeform (ISO). The product is not put up in measured doses or for retail sale, so it remains classified here.

Chlordimeform Hydrochloride Salt

Chlordimeform Hydrochloride Salt is the hydrochloride salt of the imine compound Chlordimeform (ISO). Under Chapter 29 Note 5(C)(1), inorganic salts of organic compounds are classified with the organic compound, so this salt falls under tariff item 2925.21.00. The product is a chemically defined organic compound with an added inorganic salt, not excluded by Chapter 29 notes.

Chlordimeform Technical Grade

Chlordimeform Technical Grade is a chemically defined imine-function compound used as an acaricide and insecticide. It is the ISO-designated active ingredient, and as a separate chemically defined organic compound, it falls under tariff item 2925.21.00. The technical grade form is not put up for retail sale, so it is not excluded by Section VI Note 2.

Fonduron Mite Killer Base

Fonduron Mite Killer Base is a technical base material containing Fonduron, an alternate ISO-associated name for Chlordimeform. As a chemically defined imine compound, it is classified under tariff item 2925.21.00, which specifically names Chlordimeform (ISO). The product is not in retail packaging, so it remains within Chapter 29.

Galceron Acaricide Active Ingredient

Galceron Acaricide Active Ingredient is the trade name for Chlordimeform (ISO), a pure imine-function compound used in mite control. As a chemically defined organic compound, it falls under tariff item 2925.21.00, which specifically covers Chlordimeform (ISO). The product is not put up in measured doses or for retail sale, so it is not excluded by Section VI Note 2.

1,3-Di-o-tolylguanidine

1,3-Di-o-tolylguanidine is an aromatic guanidine derivative used as a rubber accelerator and curing agent in industrial applications. Its guanidine structure with imine functionality qualifies it under this tariff item for other imines and their derivatives.

3-Dimethylaminomethyleneiminophenol Hydrochloride

3-Dimethylaminomethyleneiminophenol hydrochloride is a hydrochloride salt of an aromatic imine derivative used in organic synthesis and as an intermediate for dyes and pharmaceuticals. Its imine-function structure qualifies it under this tariff item for other imines and their derivatives.

Aprindine Hydrochloride API

Aprindine hydrochloride is an aromatic imine antiarrhythmic drug used for ventricular arrhythmias, imported as a bulk API for pharmaceutical manufacturing. Its hydrochloride salt form with imine functionality qualifies it under this tariff item for other imines and their derivatives.

Bunamidine Hydrochloride

Bunamidine hydrochloride is an anthelmintic drug used in veterinary medicine to treat intestinal worms in animals. It is a chemically defined organic compound with an imine structure and is presented as a salt, which falls under the tariff item for other imines and their derivatives.

Bunamidine Hydrochloride BP Veterinary Grade

Bunamidine hydrochloride BP grade is a high-purity veterinary anthelmintic used for deworming livestock and companion animals. As a chemically defined imine salt, it is correctly classified under this tariff item for other imines and their derivatives.

Bunamidine Hydrochloride Powder 98% Pure

Bunamidine hydrochloride powder at 98% purity is a chemically defined imine salt used as an active ingredient in veterinary deworming formulations. It qualifies under this tariff item as an imine derivative with a salt form, consistent with Chapter 29 rules for separate chemically defined compounds.

Diphenylguanidine (DPG) Rubber Accelerator DPG

Diphenylguanidine (DPG) is a commercial-grade rubber accelerator used in vulcanization processes, with purity typically 95-99% and stabilizers permitted under Chapter 29 notes. Its guanidine structure with imine functionality qualifies it under this tariff item for other imines and their derivatives.

N'-(4-Chloro-o-tolyl)-N,N-dimethylformamidine

N'-(4-Chloro-o-tolyl)-N,N-dimethylformamidine is a specific aromatic formamidine compound used as an intermediate in pharmaceutical synthesis. Its imine-function structure makes it classifiable under this tariff item for other imines and derivatives.

N'-(4-Chloro-o-tolyl)-N,N-dimethylformamidine USP Grade

USP-grade N'-(4-Chloro-o-tolyl)-N,N-dimethylformamidine is a high-purity aromatic formamidine intermediate used in veterinary pharmaceutical manufacturing. As a chemically defined imine compound, it falls under this tariff item for other imines and their derivatives.

N,N-Dimethyl-N'-[3-[[(methylamino)carbonyl]oxy]phenyl]methanimidamide Monohydrochloride

N,N-Dimethyl-N'-[3-[[(methylamino)carbonyl]oxy]phenyl]methanimidamide monohydrochloride is a complex aromatic imine hydrochloride with carbamate functionality used as a pesticide intermediate. Its imine structure qualifies it under this tariff item for other imines and their derivatives.

N,N'-Diphenylguanidine

N,N'-Diphenylguanidine is an aromatic imine-function compound used primarily as an accelerator in rubber vulcanization processes. Its guanidine structure with imine functionality qualifies it under this tariff item for other imines and their derivatives.

OTG 1,3-Di-o-Tolylguanidine Accelerator

OTG (1,3-Di-o-tolylguanidine) is the commercial designation for this aromatic guanidine compound used in low-temperature rubber curing, offering superior solubility compared to DPG in synthetic rubber compounds. Its imine functionality qualifies it under this tariff item for other imines and their derivatives.

Pentamidine (Free Base)

Pentamidine free base is an aromatic diamidine antiparasitic drug used to treat Pneumocystis pneumonia. It is a separate chemically defined organic compound with imine functionality, qualifying under this tariff item for other imines and their derivatives.

Pentamidine Isethionate Equivalent Base

Pentamidine isethionate equivalent base refers to the free base form of pentamidine used as an active pharmaceutical ingredient for antiprotozoal treatments. Its aromatic imine structure qualifies it under this tariff item for other imines and derivatives.