Phenomaphos Fonofos Pesticide Standard
Certified reference standard of fonofos (O-Ethyl-S-phenylethylphosphono-thiolothionate) at 99% purity for analytical and quality control in pesticide manufacturing. As a separate chemically defined organo-sulfur compound specifically listed as a pesticide, it matches HTS 2930.90.4310 exactly.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If diagnostic or laboratory reagents certified for testing
Certified reference materials for lab diagnostics classify under 3822, excluding Chapter 29 pure compounds.
If heterocyclic structure emphasized over organo-sulfur
Compounds with heterocyclic rings may shift to Chapter 29 subchapter on heterocyclics if ring structure predominates.
If U.S. goods returned after analytical processing abroad
U.S.-origin chemicals processed abroad for analysis qualify for duty-free entry under Chapter 98 provisions.
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Import Tips & Compliance
• Provide certificate of analysis with impurity levels <1%; declare as reference standard to avoid retail packing issues
• Pitfall: incorrect declaration as formulation leads to higher duties under 3808
Related Products under HTS 2930.90.43.10
Fonofos Technical Grade Pesticide
Pure O-Ethyl-S-phenylethylphosphono-thiolothionate (fonofos), a chemically defined organo-sulfur compound used as an active ingredient in organophosphate insecticides. It falls under HTS 2930.90.4310 as a specific pesticide listed in the organo-sulfur compounds heading, meeting chapter 29 requirements for separate chemically defined organic compounds with sulfur directly linked to carbon.
Fonofos 90% Wettable Powder Insecticide
Wettable powder formulation containing 90% fonofos (O-Ethyl-S-phenylethylphosphono-thiolothionate) as the active organo-sulfur pesticide ingredient, diluted with stabilizers for safe handling. Classified under HTS 2930.90.4310 when imported as the specific pure compound or minimal formulation meeting chapter 29 note (f) for added stabilizers necessary for transport.
Fonofos Insecticide Active Ingredient Concentrate
Concentrated form of O-Ethyl-S-phenylethylphosphono-thiolothionate (fonofos) at 95% purity, used for downstream formulation into crop protection products. This organo-sulfur compound is specifically named in HTS 2930.90.4310 under pesticides, as a separate chemically defined organic compound per chapter 29 scope.
Fonofos Bulk Import for Insecticide Production
Bulk drums of O-Ethyl-S-phenylethylphosphono-thiolothionate (fonofos) with added anti-dusting agent for safe industrial transport, as a pure organo-sulfur pesticide. Covered by HTS 2930.90.4310 and chapter note (g) allowing identification aids without changing general use classification.