Diisobutyl Phthalate (DIBP) from Mexico
DIBP functions as a fast-fusing plasticizer for PVC coatings and inks, derived from orthophthalic acid. Classified in HTS 2917.34.0150 as other orthophthalic esters under Chapter 29 for pure organic compounds. Alternative to DBP in some applications.
Duty Rate — Mexico → United States
110%
Rate breakdown
9903.04.6093.5%Except as provided in heading 9903.04.61, patented pharmaceutical articles as provided for in subdivisions (c) and (d) of U.S. note 40 to this subchapter
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
• Confirm branched isobutyl structure via NMR to distinguish from n-butyl DBP
• Prop 65 labeling required in California for phthalate exposure
• Avoid packaging that implies consumer use; industrial bulk keeps Chapter 29