Difenzoquat Methyl Sulfate Ion-Pair Reagent
Specialty grade 1,2-dimethyl-3,5-diphenyl-1H-pyrazolium methyl sulfate used as ion-pairing agent in reversed-phase HPLC for quaternary ammonium compound analysis. Meets Chapter 29 note (e) as solvent-dissolved for safe transport but suitable for general lab use. The pyrazole structure classifies specifically under HTS 2933.19.15.00.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If supplied as complete lab reagent kit
Composite lab solutions for specific analytical diagnostic purposes classify under prepared laboratory reagents.
If misclassified as quaternary ammonium salt generically
Generic QAC salts go to 2923 but specific pyrazole heterocyclic structure takes precedence per chapter notes.
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Import Tips & Compliance
• Specify concentration and solvent (typically methanol/water) complies with Chapter 29 note (e) transport criteria
• Provide documentation that solution suitable for general analytical use, not proprietary method-specific
• Label clearly as 'HPLC ion-pair reagent' to prevent confusion with pesticide technical material
Related Products under HTS 2933.19.15.00
Difenzoquat Methyl Sulfate Technical Grade
Pure 1,2-dimethyl-3,5-diphenyl-1H-pyrazolium methyl sulfate, a quaternary ammonium salt used as the active ingredient in herbicides for wild oat control in cereals. This chemically defined heterocyclic compound with a pyrazole ring falls under HTS 2933.19.15.00 as an aromatic pyrazolium compound. It's imported as technical material for formulation into agricultural pesticides.
Difenzoquat Methyl Sulfate Reference Standard
High-purity (≥98%) 1,2-dimethyl-3,5-diphenyl-1H-pyrazolium methyl sulfate certified reference material for analytical labs and pesticide residue testing. This chemically defined aromatic pyrazole compound is imported under HTS 2933.19.15.00 for calibration standards in GLP laboratories. Used to validate HPLC methods for herbicide detection.
Difenzoquat Methyl Sulfate 80% WDG
Water dispersible granule formulation containing 80% difenzoquat methyl sulfate as active pyrazolium compound for grass weed control. While primarily a pesticide, the high concentration of named chemical classifies under HTS 2933.19.15.00 when imported as technical concentrate. Used in post-emergence herbicide applications for barley and wheat.
Difenzoquat Methyl Sulfate Stabilized Powder
Stabilized technical powder of 1,2-dimethyl-3,5-diphenyl-1H-pyrazolium methyl sulfate with anticaking agent per Chapter 29 note (f) for safe transport and storage. This aromatic pyrazolium herbicide intermediate classifies under HTS 2933.19.15.00. Used by formulators to produce Avenge®-type grass herbicides.