Ditungsten Trioxide (W2O3) Technical Grade from Mexico
Technical grade ditungsten trioxide used in alloy production and high-temperature ceramics. Falls under HTS 2825.90.30.00 as a defined tungsten oxide compound per Chapter 28 specifications. Excluded from other chapters due to its inorganic metal oxide nature.
Duty Rate — Mexico → United States
5.5%
Rate breakdown
9903.05.860%Universal product exemption (U.S. note 52(b))
Import Tips
• Include assay certificate showing tungsten oxide content >95% to prevent classification as waste or scrap
• Check for anti-dumping duties on tungsten products from specific countries; maintain origin certificates
• Package in UN-approved containers for oxidizer classification (DOT 5.1)