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Chimassorb 2020 Plastic Antioxidant

Chimassorb 2020 is the trade name for bis(1,2,2,6,6-pentamethyl-4-piperidinyl) sebacate, functioning as a UV and heat stabilizer in polyolefin plastics. HTS 3812.39.70.00 specifically names this compound as an anti-oxidizing preparation for rubber or plastics.

Import Duty Rates by Country of Origin

Origin CountryMFN RateCh.99 SurchargesTotal Effective Rate
🇨🇳ChinaFree+37.5%37.5%
🇲🇽MexicoFree+10.0%10%
🇨🇦CanadaFree+10.0%10%
🇩🇪GermanyFree+10.0%10%
🇯🇵JapanFree+12.5%12.5%

Alternative Classifications

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

2933.99.97.01Higher: 112.5% vs 37.5%

If imported in research quantities without commercial end-use declaration

Other heterocyclic compounds classify in Chapter 29 when not specified as functional preparations.

3812.39.20.00Higher: 44% vs 37.5%

If containing accelerating properties for vulcanization

Rubber accelerators have separate subheading even when sharing stabilizer functions.

Not sure which classification is right?

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

Import Tips & Compliance

• Include GC-MS analysis certificate proving compound identity per CBP laboratory requirements

• Use UN 3077 proper shipping name with marine pollutant marking for DG compliance

• Document commercial invoice must specify 'for rubber/plastics stabilization' to maintain heading 3812 classification