Sodium 4,4'-Dinitrostilbene-2,2'-disulfonate from Germany
Sodium 4,4'-Dinitrostilbene-2,2'-disulfonate is the sodium salt of the corresponding sulfonic acid, formed when the acidic protons are replaced by sodium ions. Under Chapter 29 Note 5(C)(1), inorganic salts of organic sulfonic acids are classified in the heading appropriate to the organic compound, which is heading 2904.
Duty Rate — Germany → Canada
0%
Import Tips
• Confirm the salt is an inorganic salt of the organic sulfonic acid; Chapter 29 Note 5(C)(1) directs classification with the organic compound
• Provide the chemical formula and salt formation details on the commercial invoice
• If the salt is in aqueous solution, ensure it meets the conditions of Chapter 29 Note 1(d) for classification in this chapter