Phthalolactone Blue Intermediate from China
Phthalolactone derivatives used as intermediates for blue dyes feature aromatic fused lactone structures, falling under HTS 2932.20.4500. Essential for pigment manufacturing.
Duty Rate — China → United States
19%
Rate breakdown
9903.05.3112.5%Section 301 (forced labor) — additional 12.5% ad valorem on products of China
Import Tips
• Include dye intermediate synthesis pathway documentation linking lactone structure to end-use
• Certify purity >98% to qualify as separate chemically defined compound per Chapter note (a)
• Avoid colorant additions that trigger Chapter exclusion note (g) for coloring matter