Hexachlorobenzene (ISO) and DDT (ISO) (clofenotane (INN)), (1,1,1-trichloro-2,2- bis(p-chlorophenyl)ethane)
Halogenated derivatives of hydrocarbons: > Halogenated derivatives of aromatic hydrocarbons: > Hexachlorobenzene (ISO) and DDT (ISO) (clofenotane (INN)), (1,1,1-trichloro-2,2- bis(p-chlorophenyl)ethane)
Duty Rate (from China)
Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
Articles the product of any country, as provided for in subdivision (aa)(ii) of U.S. note 2 to this subchapter
Products classified under HTS 2903.92.00.00
Hexachlorobenzene (HCB) Technical Grade
Hexachlorobenzene (ISO) is a chlorinated aromatic hydrocarbon used primarily as an intermediate in organic synthesis and historically as a fungicide. It falls under HTS 2903.92.00.00 as a specifically named halogenated derivative of aromatic hydrocarbons per Chapter 29 note (a). This pure chemical compound contains no impurities that would exclude it from this classification.
DDT (Dichlorodiphenyltrichloroethane) USP Reference Standard
DDT (clofenotane, INN) is the specific organochlorine compound (1,1,1-trichloro-2,2-bis(p-chlorophenyl)ethane) used as analytical reference standard for residue testing. Classified under HTS 2903.92.00.00 as the explicitly named halogenated aromatic hydrocarbon derivative. Meets Chapter 29 criteria for separate chemically defined organic compounds.
Hexachlorobenzene 99% ACS Reagent Grade
High-purity hexachlorobenzene meeting American Chemical Society standards for laboratory use in organic synthesis and calibration. Specifically enumerated under HTS 2903.92.00.00 as halogenated derivative of benzene. Qualifies under Chapter 29 note (a) for chemically defined organic compounds.
p,p'-DDT Isomeric Standard 98% Purity
Pure p,p'-DDT isomer (1,1,1-trichloro-2,2-bis(4-chlorophenyl)ethane) for environmental monitoring and GC-MS calibration. Falls under HTS 2903.92.00.00 as the specifically named DDT compound. Chemically defined per Chapter 29 note (a) with defined impurities.
Technical DDT 75% Wettable Powder Reference
Standardized technical DDT containing specified HCB impurities for historical pesticide residue studies. Classified under HTS 2903.92.00.00 as specifically named DDT despite formulation. Chapter 29 note (f) allows stabilizers necessary for preservation.
Hexachlorobenzene EPA Method 608 Calibration Standard
Certified reference material of HCB in methanol for wastewater analysis per EPA Method 608. Remains under HTS 2903.92.00.00 as chemically defined compound per Chapter note (e) transport exception. Specifically named halogenated aromatic derivative.