Diphosphorus Tetroxide from Germany
Diphosphorus tetroxide (P2O4), a white hygroscopic solid, serves as a phosphorylating agent. Under HTS 2811.19.61 as an other inorganic oxygen compound of phosphorus, it avoids 2812 carbon-specific halides. Used in flame retardants.
Duty Rate — Germany → United States
10%
Rate breakdown
9903.05.3910%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.97, articles the product of a member state of the European Union, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 10 percent, as provided for in U.S. note 52 to this subchapter
Import Tips
• Package under nitrogen to prevent hydrolysis to phosphorous acid
• Declare CAS 12136-78-6 and molecular formula for verification
• Separate from oxidizers in storage per NFPA codes