2,5-Diphenyloxazole (PPO) from China
2,5-Diphenyloxazole is a fluorescent organic compound classified under HTS 2934.99.08.00 as an aromatic heterocyclic compound containing an oxazole ring with phenyl substituents. It is primarily used as a primary scintillator in liquid scintillation cocktails for detecting beta radiation in radiochemical analysis.
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
• Provide Safety Data Sheet (SDS) and Certificate of Analysis confirming 99%+ purity as required for research chemicals
• Include end-use statement specifying scintillation/radiochemical applications to avoid misclassification as general dye
• Ensure proper UN-approved packaging for flammable solids (UN3345) with hazard class 4.1 labeling