Diphenylguanidine (DPG) Rubber Accelerator DPG from Canada
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 — Canada → United States
10%
Rate breakdown
9903.05.2910%Except for products described in headings 9903.05.85–9903.05.93, articles the product of Canada, as provided for in U.S. note 52 to this subchapter
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