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HTS heading 3812: Prepared rubber accelerators; compound plasticizers for rubber or plastics, not elsewhere specified or included; antioxidizing preparations and other compound s

Heading 3812 of the US Harmonized Tariff Schedule covers Prepared rubber accelerators; compound plasticizers for rubber or plastics, not elsewhere specified or included; antioxidizing preparations and other compound stabilizers for rubber or plastics. Below: every rated tariff line in it with its general duty rate, Section 301 China status and exclusions, then a page per line with a free duty calculator.

Official USITC HTS, 2026HTSRev22 · check on hts.usitc.gov

Heading 3812 at a glance

Goods named in this heading (official line texts): Containing any aromatic or modified aromatic rubber accelerator, Containing any aromatic or modified aromatic plasticizer, Mixtures of oligomers of 2,2,4-trimethyl-1,2-dihydroquinoline (TMQ), Mixtures of N,N'-diaryl-p-phenylenediamines, Master batches of poly[nitrilomethanetetraaryl- nitrilo[2,4,6- tris(1-methylethyl)-1,3- phenyl…, Bis(1,2,2,6,6-pentamethyl-4-piperidinyl) sebacate.

Subheadings (6-digit)

All tariff lines in heading 3812

LineDescriptionGeneralSection 301 (China)Exclusions
3812.10.10Containing any aromatic or modified aromatic rubber accelerator6.5%List 3 +25%
3812.10.50Prepared rubber accelerators: Other5%List 3 +25%
3812.20.10Containing any aromatic or modified aromatic plasticizer6.5%List 3 +25%
3812.20.50Compound plasticizers for rubber or plastics: Other5%List 3 +25%
3812.31.00Mixtures of oligomers of 2,2,4-trimethyl-1,2-dihydroquinoline (TMQ)6.5%List 3 +25%
3812.39.20Mixtures of N,N'-diaryl-p-phenylenediamines6.5%List 3 +25%
3812.39.30Master batches of poly[nitrilomethanetetraaryl- nitrilo[2,4,6- tris(1-methylethyl)-1,3- phenyl…FreeList 3 +25%
3812.39.60Containing any aromatic or modified aromatic antioxidant or other stabilizer: Other6.5%List 3 +25%
3812.39.70Bis(1,2,2,6,6-pentamethyl-4-piperidinyl) sebacateFreeList 3 +25%
3812.39.90Other: Other5%List 3 +25%

All of chapter 38 · Chapter 38 rate summary · HTS lookup

General information from the official US Harmonized Tariff Schedule (USITC) and USTR Section 301 notices in HTS Chapter 99; not legal or customs advice. Classification is decided by CBP; confirm with a licensed customs broker or a CBP binding ruling.

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