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Didecyl Orthophthalate (DIDP)

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.

Import Duty Rates by Country of Origin

Origin CountryMFN RateCh.99 SurchargesTotal Effective Rate
๐Ÿ‡จ๐Ÿ‡ณChina6.5%+37.5%44%
๐Ÿ‡ฒ๐Ÿ‡ฝMexico6.5%+10.0%16.5%
๐Ÿ‡จ๐Ÿ‡ฆCanada6.5%+10.0%16.5%
๐Ÿ‡ฉ๐Ÿ‡ชGermanyFree+10.0%10%
๐Ÿ‡ฏ๐Ÿ‡ตJapanFree+12.5%12.5%

More Specific Codes

This product may fall under a more specific subheading:

Alternative Classifications

This product could be classified differently depending on its characteristics or intended use.

2917.39.20.00Same rate: 44%

If dioctyl orthophthalates instead

Different alcohol chain length changes to specifically named dioctyl phthalates earlier in 2917.39.

2909.60.20.00Lower: 43% vs 44%

If imported as solution in organic solvent for transport

Chapter 29 note (e) allows classification here only if solvent is necessary for safety/transport, not specific use.

3812.20Lower: 17.5% vs 44%

If for rubber compounding use with vulcanizing additives

Compound rubber additives may fall under Chapter 38 if prepared for specific rubber industry use.

Not sure which classification is right?

The Tariff Assistant works through the GRI rules on your specific product to reach the right HTS code โ€” and can price the duty on it in the same conversation.

Import Tips & Compliance

โ€ข Include technical data sheet confirming >99% purity to avoid reclassification as mixtures

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

โ€ข Declare exact isomer composition as Chapter 29 note (b) excludes certain isomer mixtures