Industrial Grade Methyl Ethyl Ketoxime 99.5% from Mexico
High-purity industrial methyl ethyl ketoxime (99.5%) used in 2K polyurethane coatings and silicone sealants as a catalyst blocker and anti-skinning agent. Its hydroxylamine derivative structure provides temporary inhibition of isocyanate reactions. Classified under HTS 2928.00.10.00 as a separate chemically defined organic compound per chapter notes.
Duty Rate — Mexico → United States
13.7%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
Import Tips
• Provide GC-MS analysis confirming MEKO as principal component (>98%) to meet chapter 29 purity requirements
• Label containers with UN 1993, PG III and GHS pictograms for hazardous material compliance
• Avoid bulk shipments >5,000L without intermediate bulk container (IBC) certification