Barium Tungstate Precipitate from Mexico
Barium tungstate (BaWO4) precipitate is used in X-ray contrast media and as a white pigment, classified in HTS 2841.80.00. Its insolubility provides stable opacity.
Duty Rate — Mexico → United States
5.5%
Rate breakdown
9903.05.860%Universal product exemption (U.S. note 52(b))
Import Tips
• Medical-grade requires FDA drug master files for clearance
• Particle morphology reports prevent mixture classification
• Declare barium content for RoHS compliance in electronics