Diethyl Phosphite 98% Technical Grade from China
Technical grade diethyl phosphite at 98% purity is used in industrial synthesis of herbicides like glyphosate intermediates. It falls under HTS 2920.22.00.00 as a phosphite ester meeting Chapter 29 requirements for chemically defined organic compounds.
Duty Rate — China → United States
16.2%
Rate breakdown
9903.05.3112.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of China, as provided for in U.S. note 52 to this subchapter
Import Tips
• Include GC-MS analysis certificate verifying 98% minimum purity to prevent classification as mixture
• Use UN-approved drums with phosphite-specific labeling; common pitfall is incorrect flash point declaration
• For quantities >1000kg, pre-notify CBP with REACH-equivalent documentation if from EU origins