Chapter 2806 — Customs Tariff Headings
Products classified under Tariff item 28.06
32% Reagent Grade Hydrochloric Acid
High-purity hydrochloric acid at 32% concentration, suitable for laboratory analytical use. This is a chemically defined inorganic acid of hydrogen and chlorine, meeting Chapter 28 standards for separate chemically defined compounds.
2806.10.0037% Hydrochloric Acid Solution
Aqueous solution of hydrogen chloride gas at approximately 37% concentration, commonly known as muriatic acid. This is a chemically defined hydrogen chloride (hydrochloric acid) per Chapter 28, dissolved in water as a normal method of putting up.
2806.10.00Anhydrous Hydrogen Chloride Gas
Pure dry HCl gas, anhydrous form without water, supplied in cylinders for chemical synthesis. This is chemically defined hydrogen chloride (HCl) per Chapter 28 notes, used in pharmaceutical manufacturing.
2806.10.00Battery Recycling Hydrochloric Acid
High-strength HCl used to leach metals from spent lead-acid batteries. This is pure hydrogen chloride classified under 2806.10.00.00 as per Chapter 28 definitions for inorganic acids, essential for e-waste recovery.
2806.10.00Food-Grade Hydrochloric Acid
Ultra-pure HCl solution compliant with FCC standards for use in food processing like gelatin production. This is chemically defined per Chapter 28, meeting inorganic acid criteria with purity exceeding 99%.
2806.10.00Gold Recovery Hydrochloric Acid
High-purity HCl component in aqua regia for e-waste gold extraction. This is pure HCl input under 2806.10.00.00, used for precious metal leaching.
2806.10.00HVAC Descaling Hydrochloric Acid
10-15% HCl for removing lime scale from commercial HVAC coils. This is industrial maintenance grade under 2806.10.00.00, with optional corrosion inhibitor.
2806.10.00Lab-Grade 1N Hydrochloric Acid
1 Normal (1N) standardized HCl solution for titrations and volumetric analysis. This is still classified as 2806.10.00.00 if chemically defined, with trace standardization per Chapter 28.
2806.10.00Muriatic Acid for Pool Cleaning
Commercial-grade 31.45% hydrochloric acid marketed as muriatic acid for swimming pool maintenance. This is a chemically defined acid used to lower pH and remove stains, classified under 2806.10.00.00.
2806.10.00Pharma-Grade Hydrochloric Acid USP
USP/NF certified 37% HCl for pharmaceutical API synthesis and tablet coating. This is chemically defined HCl, compliant with Chapter 28 notes excluding organo-inorganics, and meets cGMP standards.
2806.10.00Semiconductor Etch Hydrochloric Acid
Trace-metal-free 25% HCl for wafer cleaning in chip fabrication. This is ultra-pure hydrogen chloride in 2806.10.00.00, Chapter 28 compliant excluding doped forms.
2806.10.00Steel Pickling Hydrochloric Acid
33% HCl with low iron content for removing mill scale from steel sheets. This is pure form under 2806.10.00.00 as hydrogen chloride, per chemical definition in Chapter notes, and is inhibitor-free for process purity.
2806.10.00Technical Grade 20% Hydrochloric Acid
20% HCl solution for metal pickling and steel processing industries. This is chemically defined hydrogen chloride under 2806.10.00.00, meeting Chapter 28 inorganic compound standards, with lower concentration for safer handling.
2806.10.00Toilet Bowl Cleaner Base HCl
Concentrated 15-20% HCl as bulk base for formulating household cleaners. This is chemically defined in 2806.10.00.00 before retail mixing, supplied as bulk industrial product.
2806.20.00Bulk Chlorosulfuric Acid for Detergent Manufacturing
Bulk chlorosulfuric acid in tanker loads for sulfonation of linear alkylbenzene in detergent manufacturing. It is a separate chemically defined compound of inorganic origin, meeting the criteria of Chapter 28 Note 1(a), and is not excluded by Chapter 28 Note 3.
2806.20.00Chlorosulfuric Acid 98% Technical Grade
Chlorosulfuric acid at 98% purity, a fuming liquid used as a sulfonating agent in organic synthesis for detergents and pharmaceuticals. It is a separate chemically defined compound, classifiable under Chapter 28 Note 1(a), and not excluded by Chapter 28 Note 3.
2806.20.00Chlorosulfuric Acid Anhydride for Polymer Processing
Anhydrous chlorosulfuric acid used to chlorosulfonate polymers like polyethylene for ion-exchange resins and membranes. It is a separate chemically defined inorganic compound, meeting Chapter 28 Note 1(a), and not excluded by Chapter 28 Note 3.
2806.20.00Distilled Chlorosulfuric Acid 99.5%
Vacuum-distilled chlorosulfuric acid at 99.5% concentration for high-precision etching and microelectronics applications. It is a separate chemically defined compound, classifiable under Chapter 28 Note 1(a), and not excluded by Chapter 28 Note 3.
2806.20.00Industrial Chlorosulfuric Acid for Dyestuff Production
Bulk chlorosulfuric acid for sulfonation of aromatic compounds to manufacture acid dyes and intermediates. It is a separate chemically defined inorganic compound, meeting Chapter 28 Note 1(a), and not excluded by Chapter 28 Note 3.
2806.20.00Pharmaceutical Grade Chlorosulfuric Acid
Ultra-pure chlorosulfuric acid meeting cGMP standards for sulfonation in active pharmaceutical ingredient (API) synthesis, such as sulfonamide antibiotics. It is a separate chemically defined compound, classifiable under Chapter 28 Note 1(a), and not excluded by Chapter 28 Note 3.
2806.20.00Reagent Grade Chlorosulfuric Acid
High-purity chlorosulfuric acid (>99%) for laboratory use in analytical chemistry and as a catalyst in esterification reactions. It is a separate chemically defined compound, meeting Chapter 28 Note 1(a), and not excluded by Chapter 28 Note 3.
2806.20.00Stabilized Chlorosulfuric Acid Solution
Chlorosulfuric acid stabilized with minimal inorganic inhibitors to prevent decomposition, maintaining >96% active content. It remains a separate chemically defined compound with added stabilizers, classifiable under Chapter 28 Note 1(d), and not excluded by Chapter 28 Note 3.