Styrene Sulfonic Acid Sodium Salt from China
Styrene sulfonic acid sodium salt, also known as sodium styrenesulfonate (CAS 1230-52-2), is a monomer containing a sulfo group on a phenylethylene backbone. It is used in polymer synthesis for ion exchange resins. This chemically defined compound is classified under tariff item 2908.99.00 as a sulfonated derivative of phenols.
Duty Rate — China → Canada
0%
Import Tips
• Confirm the product is a pure monomer, not a polymer
• Declare the CAS number and polymerization inhibitor content if any
• Ensure the product is not put up in forms for retail sale that would change classification