2931.43.00.00/Diethyl Ethylphosphonate/China

Diethyl Ethylphosphonate from China

Diethyl ethylphosphonate (DEEP) is a non-halogenated organo-phosphorus compound used primarily as a chemical intermediate in organic synthesis and flame retardant production. It falls under HTS 2931.43.00.00 as it is specifically named as a separate chemically defined organo-inorganic compound containing phosphorus directly linked to carbon. This colorless liquid is essential in manufacturing pesticides and plasticizers.

Duty Rate — China → United States

21.2%

Rate breakdown

9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
9903.88.157.5%Except as provided in headings 9903.88.39, 9903.88.42, 9903.88.44, 9903.88.47, 9903.88.49, 9903.88.51, 9903.88.53, 9903.88.55, 9903.88.57, 9903.88.65, 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(r) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(s)
Calculate with your customs valueVerify classification with AI

Import Tips

• Provide detailed chemical analysis certificates confirming purity and structure to verify classification under 2931.43 as a specific organo-phosphorus compound

• Include Safety Data Sheets (SDS) and ensure proper UN packaging for flammable liquids (Class 3) to comply with DOT and customs requirements

• Avoid misclassification as pesticide preparations (3808) by importing as pure compound, not formulated product