Cesium Formate from Mexico
Cesium formate (HCOOCs) is a high-density formate salt used in ultra-deep oil well drilling fluids. Classified as a formic acid salt under HTS 2915.12.00.00, it is a pure organic compound. Imported in solution or powder for high-pressure applications.
Duty Rate — Mexico → United States
15.5%
Rate breakdown
9903.05.5510%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.94, articles the product of Mexico, as provided for in U.S. note 52 to this subchapter
Import Tips
• High-value import requires detailed composition analysis to prevent Chapter 28 metal compound classification
• Declare density and viscosity specs for drilling fluid verification
• EPA import notifications may apply for oilfield chemicals