Chapter 38: Miscellaneous chemical products

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

14 numbered lines under heading 3812, including 10 10-digit statistical lines. The first six digits are the international HS subheading; the general column is the normal US duty rate.

HTS heading 3812
HTS codeDescriptionUnitGeneralSpecialColumn 2
3812Prepared rubber accelerators; compound plasticizers for rubber or plastics, not elsewhere specified or included; antioxidizing preparations and other compound stabilizers for rubber or plastics:
3812.10Prepared rubber accelerators:
3812.10.10.00Containing any aromatic or modified aromatic rubber acceleratorkg6.5%Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)3.7¢/kg + 60%
3812.10.50.00Otherkg5%Free (A+,AU,BH,CL,CO,D, E,IL, JO,KR,MA,OM,P, PA,PE,S,SG)25%
3812.20Compound plasticizers for rubber or plastics:
3812.20.10.00Containing any aromatic or modified aromatic plasticizerkg6.5%Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)15.4¢/kg + 57%
3812.20.50.00Otherkg5%Free (A+,AU,BH,CL,CO,D, E,IL, JO,KR,MA,OM,P, PA,PE,S,SG)25%
Anti-oxidizing preparations and other compound stabilizers for rubber or plastics:
3812.31.00.00Mixtures of oligomers of 2,2,4-trimethyl-1,2-dihydroquinoline (TMQ)kg6.5%Free (A,AU,BH,CL,CO,D,E,IL,JO,K,KR,MA,OM,P,PA,PE,S,SG)3.7¢/kg + 60%
3812.39Other:
Containing any aromatic or modified aromatic antioxidant or other stabilizer:
3812.39.20.00Mixtures of N,N'-diaryl-p-phenylenediamineskg6.5%Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)3.7¢/kg + 60%
3812.39.30.00Master 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)kgFree3.7¢/kg + 60%
3812.39.60.00Otherkg6.5%Free (A,AU,BH,CL,CO,D,E,IL,JO,KR,MA,OM,P,PA,PE,S,SG)3.7¢/kg + 60%
Other:
3812.39.70.00Bis(1,2,2,6,6-pentamethyl-4-piperidinyl) sebacatekgFree25%
3812.39.90.00Otherkg5%Free (A+,AU,BH,CL,CO,D, E,IL, JO,KR,MA,OM,P, PA,PE,S,SG)25%

Statistical (10-digit) lines without a rate use the rate of the 8-digit line above them. Additional duties such as Section 301 and Section 232 may apply; check them with the tariff checker.

Source: Harmonized Tariff Schedule of the United States, 2026 HTS Revision 20 (effective 2026-09-28), U.S. International Trade Commission (hts.usitc.gov), imported 2026-10-07. Reference only; not legal or customs advice or a binding classification. Additional duties under Chapter 99 may apply. ShipWave is not affiliated with the USITC or U.S. Customs and Border Protection.