Aromatic DTDM Rubber Accelerator (4,4'-Dithiodimorpholine) from Japan
DTDM serves as a sulfur donor and accelerator in EPDM and low-sulfur cure systems for automotive weatherstrip. While primarily morpholine-based, commercial formulations often include aromatic activators qualifying for 3812.10.1000.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of Japan, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 12.5 percent, as provided for in U.S. note 52 to this subchapter
Import Tips
• Confirm aromatic activator content via GC-MS analysis; ensure odor control specifications met; provide EPDM scorch safety data