Diphenylguanidine (DPG) Rubber Accelerator DPG from Japan
Commercial-grade N,N'-Diphenylguanidine (DPG) specifically packaged for rubber industry use falls under HTS 2925.29.18.00 as the enumerated compound. Purity typically 95-99% with stabilizers permitted by chapter notes. Essential delayed-action accelerator for NR and SR vulcanization.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%
Import Tips
• Include vulcanization accelerator specification sheets showing DPG content >90%
• Provide stabilizer analysis confirming chapter note (f) compliance (preservation/transport only)
• Declare commercial grade vs. technical grade to avoid reclassification as mixtures