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.
Import Duty Rates by Country of Origin
| Origin Country | MFN Rate | Ch.99 Surcharges | Total Effective Rate |
|---|---|---|---|
| šØš³China | 5.5% | +25.0% | 30.5% |
| š²š½Mexico | 5.5% | ā | 5.5% |
| šØš¦Canada | 5.5% | ā | 5.5% |
| š©šŖGermany | 5.5% | ā | 5.5% |
| šÆšµJapan | 5.5% | ā | 5.5% |
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If o,p'-DDT isomer predominates
Only specifically named p,p'-DDT and technical mixtures use 2903.92; isomers class as other halogenated aromatics.
If supplied as solution in nonane or toluene for injection standards
Chapter 29 note (e) excludes solvent solutions unless solely for safety/transport without specific use adaptation.
If containing nucleic acid derivatives for biochemical research
Subchapter III heterocyclic compounds with nitrogen take precedence per Chapter 29 classification note 3.
Not sure which classification is right?
Our AI classifier can analyze your specific product and recommend the correct HTS code with confidence.
Import Tips & Compliance
ā¢ Obtain CITES permit for persistent organic pollutant (POP) import; declare analytical use only
ā¢ Use secondary containment packaging per EPA P-listed waste regulations during transit
ā¢ Validate isomeric purity >95% via NMR certificate to prevent reclassification as isomer mixture
Related Products 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.
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.