4,4'-Dinitrostilbene-2,2'-disulfonic acid, 85% purity from China
4,4'-Dinitrostilbene-2,2'-disulfonic acid, 85% purity, is a technical grade version with minor impurities, still recognized as the specific compound per Chapter 29 Note 1(a). It is classified under tariff item 2904.99.00 and is used in dye synthesis.
Duty Rate — China → Canada
0%
Import Tips
• Technical grade purity is acceptable; ensure the product is a separate chemically defined compound
• Provide a certificate of analysis to CBSA
• For bulk packaging, ensure proper handling and transport documentation for hazardous chemicals