Harmonized Tariff Schedule of the United States · HTS code · HS 3812.39

3812.39.30

3812.39.30: Other stabilisers for rubber and plastics: Master batches of poly[nitrilomethanetetraaryl- nitrilo[2,4,6- tris(1-methylethyl)-1,3- phenylene]]-2,6-bis(1-methylethyl)phenyl]-ω- [[[[2,6-bis(1-methylethyl)phenyl]amino]- methylene]amino]carbodiimide or 2,4-diisocyanate-1,3,5-tris(1-methylethyl)- benzene homopolymer with polyethylene, polyethylene terephthalate, or thermoplastic polyurethanes; Master batches of 3-(2H-benzotriazol-2-yl)-5- (tert-butyl)-4-hydroxybenzenepropanoic acid, C7-C9 branched or linear alkyl esters; andMaster batches of α-[3-[3-(2H-benzotriazol-2- yl)-5-(1,1-dimethylethyl)-4-hydroxyphenyl]-1- oxopropyl-ω-[3-[3-(2H-benzotriazol-2-yl)-5- (1,1-dimethylethyl)-4-hydroxyphenyl]-1-oxo- propyl] poly(oxyethylene)

Other stabilisers for rubber and plastics

Not declarable on its own: use one of its 1 subdivisions Data: Harmonized Tariff Schedule of the United States · checked on 24 October 2026

  1. 3812 Prepared rubber accelerators; compound plasticizers for rubber or plastics, not elsewhere specified or included; antioxidizing preparations and other compound stabilizers for rubber or plastics:
  2. Anti-oxidizing preparations and other compound stabilizers for rubber or plastics:
  3. 3812.39 Other:
  4. Containing any aromatic or modified aromatic antioxidant or other stabilizer:
  5. 3812.39.30 Master batches of poly[nitrilomethanetetraaryl- nitrilo[2,4,6- tris(1-methylethyl)-1,3- phenylene]]-2,6-bis(1-methylethyl)phenyl]-ω- [[[[2,6-bis(1-methylethyl)phenyl]amino]- methylene]amino]carbodiimide or 2,4-diisocyanate-1,3,5-tris(1-methylethyl)- benzene homopolymer with polyethylene, polyethylene terephthalate, or thermoplastic polyurethanes; Master batches of 3-(2H-benzotriazol-2-yl)-5- (tert-butyl)-4-hydroxybenzenepropanoic acid, C7-C9 branched or linear alkyl esters; andMaster batches of α-[3-[3-(2H-benzotriazol-2- yl)-5-(1,1-dimethylethyl)-4-hydroxyphenyl]-1- oxopropyl-ω-[3-[3-(2H-benzotriazol-2-yl)-5- (1,1-dimethylethyl)-4-hydroxyphenyl]-1-oxo- propyl] poly(oxyethylene)

What you pay

Importing into USA

Customs duty Free standard rate depends on the country of origin
Additional duties and charges 1 additional measure
VAT no federal VAT; a Merchandise Processing Fee of 0.3464 % is charged on formal entries
Duty calculatorCalculate duty and taxes →

US additional duties of HTS chapter 99 in force on 22 October 2026 are included (Section 301, 232, 338 and 201). IEEPA duties are no longer collected after the Supreme Court ruling of February 2026. Conditional exemptions (US content, end use, metal share) are not computed: check the provision.

Additional duties and import rules

Charges on top of the customs duty, and rules the goods must meet at the border.

Additional duties and charges 1

  • Additional dutySection 301 — China — technology transfer, IP and innovation (2018 actions and 2024 four-year review) 25%
    Applies to goods from
    China
    In force
    from 24 September 2018
    Legal act
    HTSUS 9903.88.03

Same subheading in other tariffs

3812.39 Anti-oxidising preparations and other compound stabilisers: other

UK Free Third-country duty 18 tariff lines EU 6.5% Third-country duty 2 tariff lines Türkiye 6.5% Third-country duty 3 tariff lines Canada Free Third-country duty 5 tariff lines Mexico Free – 6% Third-country duty 6 tariff lines · average 2.8% Brazil Free – 12.6% Third-country duty 5 tariff lines · average 10.1% Argentina Free – 12.6% Third-country duty 7 tariff lines · average 10.8% Peru Free – 6% Third-country duty 2 tariff lines · average 3% New Zealand Free Third-country duty 1 tariff line Japan 2.6% – 4.4% Third-country duty 2 tariff lines · average 3.5% Taiwan 5% Third-country duty 2 tariff lines GCC 5% Third-country duty 2 tariff lines Switzerland Free Third-country duty 1 tariff line Norway Free Third-country duty 1 tariff line North Macedonia Free Third-country duty 2 tariff lines Nigeria 5% Third-country duty 1 tariff line

USA lines: 3812.39

Binding rulings for similar goods

Decisions of U.S. Customs and Border Protection (CROSS) and HMRC (Advance Tariff Rulings) on goods classified here. A ruling binds only its holder, but shows how the authorities classify similar goods. The descriptions are the authorities’ own, in English.

  • N344118 U.S. CBP 25 November 2024 · 3812.39.90.00

    The tariff classification of a heat stabilizer from India

  • N330364 U.S. CBP 31 January 2023 · 3812.39.90.00

    The tariff classification of a light stabilizer from China

  • N307895 U.S. CBP 6 December 2019 · 3812.39.90.00

    The tariff classification of a heat stabilizer from China

  • N301803 U.S. CBP 29 November 2018 · 3812.39.60.00

    The tariff classification of a UV Stabilizer 944 from China

6 rulings in total for this code

Legal notes

Chapter notes: Chapter 38 →

Code history

Since 2017; before, these goods were classified under 3812.30.

In the Harmonized Tariff Schedule of the United States, 3812.39.30 is one of 5 lines under subheading 3812.39, anti-oxidising preparations and other compound stabilisers: other.

The general duty is free, and quantities are declared in kg.

For the same subheading, the UK duty is free, the EU duty is 6.5%, the Türkiye duty is 6.5%, the Canada duty is free, the Mexico duty is 0%–6%, the Brazil duty is 0%–12.6%, the Argentina duty is 0%–12.6%, the Peru duty is 0%–6%, the New Zealand duty is free, the Japan duty is 2.6%–4.4%, the Taiwan duty is 5%, the GCC duty is 5%, the Switzerland duty is free, the Norway duty is free, the North Macedonia duty is free and the Nigeria duty is 5%.

The United States imported goods of subheading 3812.39 worth US$306m in 2024; the largest supplier was Mexico.

Questions and answers

What is the USA import duty for HTS code 3812.39.30?

The general duty in the Harmonized Tariff Schedule of the United States is free; the supplementary unit is kg. Preferential rates for goods from agreement countries, anti-dumping duties and VAT are not included.

Where does the United States import these goods from?

For subheading 3812.39 as a whole, the largest supplier in 2024 was Mexico (US$42m), followed by the Netherlands.

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