3911.90.00/Low-K Dielectric Cyanate Ester/Japan

Low-K Dielectric Cyanate Ester from Japan

Low-K dielectric cyanate ester, a specialty hydrocarbon novolac cyanate ester with a dielectric constant below 2.8. Used in high-frequency antenna applications, maintaining primary resin form for processing flexibility. Classified under tariff item 3911.90.00 as an 'other' product specified in Note 3 to Chapter 39, not elsewhere specified or included.

Duty Rate — Japan → Canada

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Import Tips

• Document the dielectric properties and polymer composition to justify classification under this item

• Ensure the product is in primary form (e.g

• granules, powder) and not further processed

• Verify that the cyanate ester is not a separate chemically defined compound, which would fall under Chapter 29