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Didecyl Orthophthalate (DIDP) from Japan

Didecyl orthophthalate (DIDP) is a straight-chain phthalate ester from orthophthalic acid esterified with decanol, specifically named in HTS 2917.33.00. It serves as a high-performance plasticizer for wire insulation, flooring, and automotive applications requiring thermal stability.

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

• Include technical data sheet confirming >99% purity to avoid reclassification as mixtures

• Comply with phthalate content restrictions under CPSIA for consumer products; certify non-toy applications

• Declare exact isomer composition as Chapter 29 note (b) excludes certain isomer mixtures