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.
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 certified as 'prepared reagent for chemical analysis'
Diagnostic or analytical reagents explicitly excluded from Chapter 29 by note 2(e), class in 3822.
If principal component is methanol solvent
Alcohol solutions where solvent predominates class with alcohols; Chapter 29 note (e) requires compound dominance.
If multi-analyte mix containing <10% HCB
Calibration mixes class as chemical preparations; single analyte standards may remain in Chapter 29.
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Import Tips & Compliance
ā¢ Include NIST traceability certificate and EPA method designation in documentation
ā¢ Declare concentration (typically 2000 Ī¼g/mL) and expiration date on customs entry
ā¢ Use IATA 6.1 toxic liquid packaging; avoid temperature-controlled shipments unless specified
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.
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.