Ethylene Phosphite from Mexico
Ethylene phosphite functions as a phosphorous acid ester used in agricultural pesticides and metal surface treatments. Covered by HTS 2920.90.51.00 for esters of other inorganic nonmetal acids like phosphorous acid. Applied in corrosion inhibition.
Duty Rate — Mexico → United States
13.7%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
Import Tips
• EPA pesticide chemical code required on entry summary
• Validate P-H bond via spectroscopy for phosphite vs phosphate distinction