New

Ask Wove anything about tariffs.

Try Tariff Assistant

Isooctyl Ester of 2,4,5-Trichlorophenoxyacetic Acid

This is the isooctyl ester of 2,4,5-trichlorophenoxyacetic acid, used in oil-based herbicide formulations for better leaf penetration. As an ester of the specified acid, it falls under tariff item 2918.91.00, which covers 2,4,5-T (ISO) and its salts and esters. The isooctyl ester provides systemic weed control and is suitable for various applications.

Import Duty Rates by Country of Origin

Origin CountryMFN TariffSurtaxesTotal Effective Rate
🇨🇳ChinaFree—Free
🇲🇽MexicoFree—Free
🇺🇸United StatesFree—Free
🇩🇪GermanyFree—Free
🇯🇵JapanFree—Free

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.

2918.99.00Same rate: Free

If the ester is not derived from 2,4,5-T but another acid

Other esters of carboxylic acids with oxygen function may be classified under this residual subheading.

Not sure which classification is right?

The Tariff Assistant works through the GRI rules on your specific product to reach the right tariff item — and can price the duty on it in the same conversation.

Import Tips & Compliance

• Provide technical documentation confirming the ester's identity and purity

• Check if the product requires a pesticide registration under Canadian law

• Use HS code 2918.91.00 for accurate tariff classification

Related Products under Tariff item 2918.91.00

2,4,5-T Amine Salt (Triethanolamine)

This product is the triethanolamine salt of 2,4,5-trichlorophenoxyacetic acid (2,4,5-T), a water-soluble formulation used in aquatic weed control. As a salt of the specified acid, it falls under tariff item 2918.91.00, which covers 2,4,5-T (ISO) and its salts and esters. The high water solubility minimizes drift compared to ester forms, making it suitable for targeted applications.

2,4,5-T Free Acid with Stabilizer

This is 2,4,5-T free acid with an added stabilizer to prevent degradation during transport. Chapter Note 1(f) of Chapter 29 permits the addition of stabilizers necessary for preservation or transport, so the product remains classified under tariff item 2918.91.00. It is used as an intermediate in herbicide manufacturing.

2,4,5-T Potassium Salt

This product is the potassium salt of 2,4,5-trichlorophenoxyacetic acid, a quick-dissolving formulation for spray applications in pasture weed management. As a salt of the specified acid, it is classifiable under tariff item 2918.91.00, which covers 2,4,5-T (ISO) and its salts and esters. The potassium salt form enhances solubility and ease of application.

2,4,5-Trichlorophenoxyacetic Acid (2,4,5-T)

This is pure 2,4,5-trichlorophenoxyacetic acid (2,4,5-T), a synthetic auxin herbicide that disrupts plant growth by mimicking plant hormones. It is a separate chemically defined organic compound, classifiable under tariff item 2918.91.00, which specifically covers 2,4,5-T (ISO) and its salts and esters. The acid form is a key intermediate for herbicide production.

2-Ethylhexyl 2,4,5-T Ester

This is the 2-ethylhexyl ester of 2,4,5-trichlorophenoxyacetic acid, a low-volatility formulation used in herbicide mixes to reduce drift. As an ester of the specified acid, it falls under tariff item 2918.91.00, which covers 2,4,5-T (ISO) and its salts and esters. The ester form enhances penetration in woody weeds.

Butyl 2,4,5-Trichlorophenoxyacetate Ester

This is the butyl ester of 2,4,5-trichlorophenoxyacetic acid, a volatile formulation used for foliar absorption in weed control. As an ester of the specified acid, it is classifiable under tariff item 2918.91.00, which covers 2,4,5-T (ISO) and its salts and esters. The butyl ester offers rapid absorption and is commonly used in agricultural applications.