OB Fluorescent Brightener for Plastics from China
OB-type benzoxazol fluorescent brightener is added to polystyrene, PVC, and ABS plastics to achieve high whiteness and brightness. HTS 3204.20.40.00 covers this synthetic organic product used as a luminophore in polymer compounding. It prevents yellowness in transparent and opaque plastic products.
Duty Rate — China → United States
12.5%
Rate breakdown
9903.05.3112.5%Section 301 (forced labor) — additional 12.5% ad valorem on products of China
Import Tips
• Include CAS number (typically 1533-45-5 for OB-1) in import docs for customs verification
• Test for solvent content; solutions with >50% solvent may shift to 3208 per chapter notes