Sodium Paratungstate Pentahydrate from China
Sodium paratungstate pentahydrate (Na10W12O42·5H2O) is an isopolyoxotungstate used in metal finishing, classified in HTS 2841.80.00. It forms protective conversion coatings.
Duty Rate — China → United States
30.5%
Rate breakdown
9903.91.0125%Effective with respect to entries on or after September 27, 2024, articles the product of China, as provided for in subdivision (b) of U.S. note 31 to this subchapter
9903.05.860%Articles provided for in subdivision (b) of U.S. note 52 to this subchapter
Import Tips
• Tungsten content assay (>70% WO3) confirms paratungstate identity
• Hazardous for skin contact; proper GHS labeling mandatory
• Plating bath chemical needs wastewater treatment declarations