Chapter 2903 — Customs Tariff Headings
Subheadings
Products classified under Tariff item 29.03
Anhydrous Ethyl Chloride -20°C Liquefied
Anhydrous chloroethane liquefied at -20°C for industrial applications, classified as pure ethyl chloride under tariff item 2903.11.00. This form facilitates handling in chemical manufacturing processes requiring liquid-phase reactions.
2903.11.00Chloroethane 99.8% Stabilized with Ethanol
Chloroethane stabilized with less than 0.5% ethanol for safe transport and preservation. The stabilizer is permitted under Chapter 29 Note 1(f) as it is necessary for preservation or transport and does not render the product suitable for a specific use, so it remains classified as chloroethane.
2903.11.00Chloroethane 99.9% Semiconductor Grade
Ultra-high purity (99.9%) chloroethane for semiconductor manufacturing processes, classified under tariff item 2903.11.00. Used in vapor deposition and etching processes requiring electronically pure chemicals.
2903.11.00Chloroethane (Ethyl Chloride) 99.5% Purity
Chloroethane (ethyl chloride) at 99.5% purity, a colorless flammable gas or liquid at room temperature, classified under tariff item 2903.11.00 as a saturated chlorinated derivative of acyclic hydrocarbons.
2903.11.00Chloroethane (Ethyl Chloride) USP Grade
Chloroethane (ethyl chloride) USP grade, a volatile liquid used as a topical anesthetic and refrigerant. It is a chemically defined saturated chlorinated derivative of acyclic hydrocarbons, specifically named in tariff item 2903.11.00.
2903.11.00Chloroethane for Ethylcellulose Production
High-purity chloroethane specifically for ethylcellulose manufacturing, classified under tariff item 2903.11.00 as chemically defined ethyl chloride. Used in the chemical reaction with cellulose to produce this important industrial polymer.
2903.11.00Chloroethane Industrial Refrigerant Grade
Refrigerant-grade chloroethane used in low-temperature industrial refrigeration systems, classified as pure ethyl chloride under tariff item 2903.11.00. This grade meets specific purity requirements for cryogenic applications.
2903.11.00Chloroethane with 0.1% Stabilizer Additive
Stabilized chloroethane containing 0.1% approved stabilizer for safe transport, still classified under tariff item 2903.11.00 per Chapter 29 Note 1(f). The minimal stabilizer addition is solely for preservation and does not change the chemically defined nature.
2903.11.00Chloromethane Aerosol Propellant
Chloromethane (methyl chloride) purified for use as a low-pressure aerosol propellant in specialty products such as pet care sprays and industrial cleaners. This chemically defined compound falls under tariff item 2903.11.00 as a saturated chlorinated derivative of acyclic hydrocarbons.
2903.11.00Chloromethane Anhydrous 99.9% Lab Grade
High-purity anhydrous chloromethane for laboratory synthesis and as a methylating agent. It is a chemically defined saturated chlorinated derivative of acyclic hydrocarbons, classified under tariff item 2903.11.00.
2903.11.00Chloromethane Anhydrous Industrial Grade
Anhydrous chloromethane used in the production of methyl cellulose, quaternary ammonium compounds, and as a solvent in organic synthesis. This industrial grade is a chemically defined compound classified under tariff item 2903.11.00.
2903.11.00Chloromethane Extractive Distillation Solvent
Chloromethane used as a selective solvent in extractive distillation for separating close-boiling hydrocarbons. This recovered and purified product is a chemically defined compound under tariff item 2903.11.00.
2903.11.00Chloromethane (Methyl Chloride) 99.5% Purity
Chloromethane (methyl chloride) at 99.5% purity, used as a chemical intermediate in silicone polymer and methyl cellulose production. It is a chemically defined saturated chlorinated derivative of acyclic hydrocarbons, specifically named in tariff item 2903.11.00.
2903.11.00Chloromethane (Methyl Chloride) 99% Purity
Chloromethane (methyl chloride) at 99% purity, a colorless flammable gas used as a chemical intermediate in silicone polymer and agricultural chemical production. This chemically defined compound falls under tariff item 2903.11.00.
2903.11.00Chloromethane Silicone Monomer Precursor
High-purity chloromethane used as a methylating agent in the direct process for producing dimethyldichlorosilane, the primary silicone monomer. This chemically defined compound is classified under tariff item 2903.11.00.
2903.11.00Electronic Grade Chloromethane 99.999%
Ultra-high purity (6N) chloromethane used in vapor phase epitaxial growth of compound semiconductors and as a dopant source. This electronic grade is a chemically defined compound under tariff item 2903.11.00.
2903.11.00Ethyl Chloride Aerosol Spray 100ml
Ethyl chloride aerosol spray for cryotherapy and local anesthesia in sports medicine. The active ingredient is chloroethane, a chemically defined compound, and the product is not put up as a medicament, so it remains under tariff item 2903.11.00.
2903.11.00Ethyl Chloride for Pesticide Intermediate
Technical grade chloroethane used in the synthesis of chlorinated hydrocarbon pesticides and herbicides. It is a chemically defined saturated chlorinated derivative of acyclic hydrocarbons, classified under tariff item 2903.11.00.
2903.11.00Ethyl Chloride Laboratory Reagent ACS Grade
Ethyl chloride (chloroethane) in ACS-grade purity, ≥99.7%, for analytical laboratory use. This chemically defined organic compound falls under tariff item 2903.11.00 as a saturated chlorinated derivative of acyclic hydrocarbons, regardless of its high purity.
2903.11.00Ethyl Chloride Pharmaceutical Grade USP
Pharmaceutical-grade ethyl chloride meeting USP standards, used as a topical anesthetic spray. Classified under 2903.11.00 as a chemically defined chloroethane; the USP grade and pharmaceutical use do not alter its chemical identity as a halogenated hydrocarbon.
2903.11.00Ethyl Chloride Topical Anesthetic Liquid
Pure liquid chloroethane packaged for use as a vapocoolant spray in physical therapy clinics. It is a chemically defined compound without therapeutic formulation additives, so it remains under tariff item 2903.11.00.
2903.11.00High Purity Methyl Chloride 99.99% Semiconductor
Ultra-high purity chloromethane (99.99%) for chemical vapor deposition in semiconductor manufacturing. It is a chemically defined saturated chlorinated derivative of acyclic hydrocarbons, classified under tariff item 2903.11.00.
2903.11.00Industrial Methyl Chloride for Silicone Production
Bulk chloromethane used in the direct process for manufacturing methylchlorosilanes, the building blocks of silicones. It is a chemically defined saturated chlorinated derivative of acyclic hydrocarbons, classified under tariff item 2903.11.00.
2903.11.00Medical Ethyl Chloride Topical Anesthetic
Medical ethyl chloride in spray bottles for topical anesthesia. Despite the retail packaging, this remains a chemically defined organic compound under 2903.11.00, as the packaging does not render it particularly suitable for a specific use beyond general anesthetic application.
2903.11.00Methyl Chloride Agrochemical Intermediate
Chloromethane reacted with alcohols to produce methyl esters used in herbicide and insecticide synthesis. This agrochemical grade is a chemically defined compound under tariff item 2903.11.00.
2903.11.00Methyl Chloride Calibration Gas Mixture 1,000 ppm
Certified calibration gas containing 1,000 ppm chloromethane in nitrogen balance for environmental monitoring. The chloromethane component is a chemically defined compound, but the mixture is not a pure product, so it may not fall under tariff item 2903.11.00.
2903.11.00Methyl Chloride Extractant Grade
Special purity chloromethane used as a selective solvent in natural product extraction processes. It is a chemically defined saturated chlorinated derivative of acyclic hydrocarbons, classified under tariff item 2903.11.00.
2903.11.00Methyl Chloride for Rubber Vulcanization
Chloromethane used as a swelling agent and methylating agent in chloroprene rubber vulcanization processes. It is a chemically defined saturated chlorinated derivative of acyclic hydrocarbons, classified under tariff item 2903.11.00.
2903.11.00Methyl Chloride Pharmaceutical Grade USP
USP-grade methyl chloride meeting pharmaceutical standards for use in sterile alkylation reactions and as a propellant in metered-dose inhalers. This chemically pure product falls under tariff item 2903.11.00.
2903.11.00Methyl Chloride Refrigerant Grade R-40
Methyl chloride designated as refrigerant R-40, used in low-temperature industrial refrigeration systems. It is a chemically defined saturated chlorinated derivative of acyclic hydrocarbons, classified under tariff item 2903.11.00.
2903.11.00Methyl Chloride Rubber Accelerator Precursor
Chloromethane reacted with aromatic amines to produce rubber vulcanization accelerators like MBT and CBS. This pure chloromethane for the synthetic rubber industry is classified under tariff item 2903.11.00.
2903.11.00Pharma Grade Chloroethane for Synthesis
Pharmaceutical grade ethyl chloride meeting cGMP standards for use as an intermediate in medicinal chemistry synthesis. It is a chemically defined saturated chlorinated derivative of acyclic hydrocarbons, classified under tariff item 2903.11.00.
2903.11.00Research Grade [14C]-Chloroethane
Carbon-14 labeled chloroethane (CH3CH2[14C]Cl) for biochemical research. The radioisotopic label does not change classification under 2903.11.00 as a chemically defined chloroethane, but radioactive goods may be subject to additional regulatory controls.
2903.11.00Research Grade Ethyl Chloride-d5 Deuterated
Fully deuterated chloroethane (C2D5Cl) for NMR spectroscopy and mechanistic studies. It is a chemically defined isotopic derivative of chloroethane, classified under tariff item 2903.11.00 as it is a derivative of a chemical compound within the same subheading.
2903.12.00Dichloromethane ACS Reagent Grade
High-purity dichloromethane (methylene chloride) meeting ACS standards for laboratory use in chemical analysis and synthesis. This saturated chlorinated derivative of methane is a separate chemically defined organic compound, falling under tariff item 2903.12.00.
2903.12.00Dichloromethane Extraction Solvent
Laboratory solvent specifically packaged for liquid-liquid extraction in organic chemistry and natural product isolation. Pure dichloromethane qualifies under tariff item 2903.12.00 as a separate chemically defined compound, even when packaged for laboratory use.
2903.12.00Dichloromethane Pharmaceutical Grade USP
Ultra-pure methylene chloride meeting USP standards for use as an extraction solvent in pharmaceutical manufacturing. This chemically defined saturated chlorinated hydrocarbon is classified under tariff item 2903.12.00, provided it is not put up in measured doses or for retail sale.
2903.12.00Methylene Chloride Foam Blowing Agent
High-purity dichloromethane used as auxiliary blowing agent in polyurethane foam production. As a separate chemically defined compound, it falls under tariff item 2903.12.00, even when supplied in bulk ISO tank containers for industrial use.
2903.12.00Methylene Chloride Paint Stripper
Industrial solvent formulated primarily with dichloromethane for removing paint, varnish, and coatings from surfaces. When imported as the pure compound without additives that render it suitable for specific use, it falls under tariff item 2903.12.00.
2903.12.00Stabilized Dichloromethane Industrial
Dichloromethane with minimal cyclopentane stabilizer (<0.1%) for corrosion prevention during storage and transport. Per Chapter 29 Note 1(f), stabilizers necessary for preservation or transport do not affect classification, so it falls under tariff item 2903.12.00.
2903.12.00Technical Grade Methylene Chloride 99%
Industrial-grade dichloromethane with 99% purity for use in foam blowing, adhesives, and polymer processing. As a separate chemically defined organic compound per Chapter 29 Note 1(a), it falls under tariff item 2903.12.00.
2903.13.00ACS Reagent Chloroform
ACS reagent grade chloroform (trichloromethane, CHCl3) is a pure, chemically defined organic compound stabilized with ethanol for laboratory analytical use. It falls under tariff item 2903.13.00 as a saturated chlorinated derivative of acyclic hydrocarbons, specifically chloroform, per Chapter 29 Note 1(a).
2903.13.00Chloroform for Histology
Histology-grade chloroform is pure trichloromethane used for tissue clearing and deparaffinization in pathology laboratories. It meets the criteria for a chemically defined organic compound under Chapter 29 Note 1(a) and is classified under tariff item 2903.13.00.
2903.13.00Chloroform Stabilized with Amylene
Chloroform stabilized with amylene (0.5-1%) is trichloromethane with a stabilizer added to prevent phosgene formation during transport and storage. Under Chapter 29 Note 1(f), such stabilizers are permitted, so it remains classified under tariff item 2903.13.00.
2903.13.00Industrial Extraction Grade Chloroform
Industrial extraction grade chloroform is bulk technical trichloromethane used in pesticide and alkaloid extractions. As a pure chemically defined compound, it qualifies under Chapter 29 Note 1(a) and is classified under tariff item 2903.13.00.
2903.13.00Pharmaceutical Grade Chloroform
Pharmaceutical grade chloroform is high-purity trichloromethane meeting USP standards, used as a solvent in drug manufacturing. It is a saturated chlorinated derivative of methane and falls under tariff item 2903.13.00 as a chemically defined organic compound.
2903.13.00Spectroscopy Grade Chloroform-d (Deuterated)
Spectroscopy grade chloroform-d (CDCl3) is deuterated trichloromethane, an isotopically substituted form of chloroform used in NMR spectroscopy. As a derivative of chloroform, it is classified under tariff item 2903.13.00, consistent with Chapter 29 provisions for isomers and derivatives.
2903.14.00Carbon Tetrachloride 99.9% HPLC Grade
Ultra-pure carbon tetrachloride (CCl4) optimized for high-performance liquid chromatography (HPLC) as a non-polar solvent. This separate chemically defined organic compound falls under tariff item 2903.14.00 as a saturated chlorinated derivative of acyclic hydrocarbons, meeting the purity standards for laboratory use.
2903.14.00Carbon Tetrachloride ACS Reagent Grade
High-purity carbon tetrachloride (CCl4) meeting American Chemical Society standards for laboratory use in organic synthesis and extractions. As a separate chemically defined compound, it is classified under tariff item 2903.14.00, being a saturated chlorinated derivative of acyclic hydrocarbons.
2903.14.00Carbon Tetrachloride Analytical Standard 1000 ppm
Certified reference material of carbon tetrachloride in methanol matrix at 1000 ppm for environmental testing calibration. The principal component, carbon tetrachloride, determines classification under tariff item 2903.14.00, as the solution is a normal method of putting up for analytical use.
2903.14.00Industrial Carbon Tetrachloride Bulk 99% Technical Grade
Technical grade carbon tetrachloride (99% purity) for industrial extraction processes and chemical manufacturing. Despite minor impurities, it qualifies as a separate chemically defined compound under tariff item 2903.14.00, being a saturated chlorinated derivative of acyclic hydrocarbons.
2903.14.00Stabilized Carbon Tetrachloride for Organic Synthesis
Carbon tetrachloride with added ethanol stabilizer (<0.5%) for safe transport and storage in chemical manufacturing. The stabilizer is necessary for preservation and does not alter the product's classification under tariff item 2903.14.00, per Chapter 29 Note 1(f).
2903.15.001,2-Dichloroethane Chemical Intermediate
1,2-Dichloroethane, also known as ethylene dichloride, is a saturated chlorinated derivative of acyclic hydrocarbons. It is a separate chemically defined organic compound, meeting the criteria of Chapter 29 Note 1(a), and is specifically named in tariff item 2903.15.00.
2903.15.0099.9% Pure Ethylene Dichloride
Ultra-high purity ethylene dichloride (99.9% min) is a separate chemically defined organic compound, specifically named in tariff item 2903.15.00. It is used in specialty chemical synthesis and meets the Chapter 29 criteria for classification.
2903.15.00EDC Vinyl Chloride Precursor
High-purity 1,2-dichloroethane for vinyl chloride production via oxychlorination is a separate chemically defined compound. It is specifically named in tariff item 2903.15.00 and is a saturated chlorinated derivative of acyclic hydrocarbons.
2903.15.00Ethylene Dichloride (1,2-Dichloroethane)
Ethylene dichloride (1,2-dichloroethane) is a colorless liquid with the formula ClCH2CH2Cl, specifically named in tariff item 2903.15.00. It is a saturated chlorinated derivative of acyclic hydrocarbons and a separate chemically defined compound.
2903.15.00Industrial Grade 1,2-Dichloroethane
Industrial grade 1,2-dichloroethane (99.8% purity) is a separate chemically defined organic compound, specifically named in tariff item 2903.15.00. It is used in the production of vinyl chloride, ethyleneamines, and other chemicals.
2903.19.001,1,1,2-Tetrachloroethane
>- 1,1,1,2-Tetrachloroethane (CH2ClCCl3) is a saturated chlorinated derivative of ethane with four chlorine substituents. It is a chemically defined compound used as a chemical intermediate and solvent, classified under tariff item 2903.19.00 as an "other" saturated chlorinated acyclic hydrocarbon.
2903.19.001,1,1,3-Tetrachloropropane
1,1,1,3-Tetrachloropropane is a saturated chlorinated propane with a specific substitution pattern, used in specialty chemical synthesis. As a saturated chlorinated derivative of an acyclic hydrocarbon, it falls under tariff item 2903.19.00. This product is a separate chemically defined organic compound under Chapter 29 Note 1(a).
2903.19.001,1,1-Trichloroethane
>- 1,1,1-Trichloroethane (CH3CCl3), also known as methylchloroform, is a saturated chlorinated derivative of ethane with three chlorine atoms on one carbon. It is a chemically defined compound used as a solvent and chemical intermediate, classified under tariff item 2903.19.00 as an "other" saturated chlorinated acyclic hydrocarbon.