Chapter 3812 — Customs Tariff Headings

Aromatic DTDM Rubber Accelerator (4,4'-Dithiodimorpholine)

DTDM (4,4'-Dithiodimorpholine) is a sulfur donor and accelerator in EPDM and low-sulfur cure systems for automotive weatherstrip. Commercial formulations often include aromatic activators, qualifying it as a prepared rubber accelerator under tariff item 3812.10.00.

Benzothiazole-based Pre-Vulcanization Accelerator

A specialty accelerator designed for pre-vulcanization of latex compounds, used in dipped goods like gloves and balloons. Contains modified 2-mercaptobenzothiazole derivatives, which are prepared rubber accelerators under tariff item 3812.10.00.

CBS Rubber Accelerator (N-Cyclohexyl-2-benzothiazole sulfenamide)

CBS (N-Cyclohexyl-2-benzothiazole sulfenamide) is a delayed-action sulfenamide rubber accelerator used primarily in tire manufacturing and other rubber products. It contains a modified aromatic benzothiazole structure, qualifying it as a prepared rubber accelerator under tariff item 3812.10.00.

DPG Aromatic-Activated Accelerator (1,3-Diphenylguanidine)

DPG (1,3-Diphenylguanidine) is a secondary accelerator and activator containing a diphenyl aromatic structure, used for CR and EPDM compounds. It is a prepared rubber accelerator under tariff item 3812.10.00, providing enhanced curing properties.

ETU Accelerator with Aromatic Co-activator

ETU (Ethylene thiourea) formulation with an aromatic co-activator, used for neoprene (CR) adhesives and coatings. The aromatic component presence requires classification as a prepared rubber accelerator under tariff item 3812.10.00.

Masterbatch CBS/N990 Accelerator Blend

A masterbatch of 60% CBS accelerator dispersed in N990 carbon black, designed for direct addition to rubber compounding. The accelerator component retains its classification as a prepared rubber accelerator under tariff item 3812.10.00, despite the carbon black carrier.

MBTS Rubber Accelerator (2,2'-Dibenzothiazole disulfide)

MBTS (2,2'-Dibenzothiazole disulfide) is a versatile rubber accelerator used in the vulcanization of natural and synthetic rubbers, particularly in belts and hoses. Its dibenzothiazole structure contains modified aromatic components, placing it under tariff item 3812.10.00.

Mercaptobenzothiazole (MBT) Rubber Accelerator Powder

MBT (Mercaptobenzothiazole) is a primary rubber accelerator used in footwear soles and mechanical goods. It features the core aromatic benzothiazole structure, qualifying it as a prepared rubber accelerator under tariff item 3812.10.00.

NOBS Rubber Accelerator (N-Oxydiethylene-2-benzothiazole sulfenamide)

NOBS (N-Oxydiethylene-2-benzothiazole sulfenamide) is a fast-curing sulfenamide accelerator ideal for thick rubber articles like tires and conveyor belts. The benzothiazole moiety provides the modified aromatic structure required for classification under tariff item 3812.10.00.

OTOS Aromatic Rubber Accelerator (Pentaerythritol Tetrakis)

OTOS is an advanced sulfur-free accelerator system containing aromatic-modified thiophosphates for eco-friendly rubber curing. It meets the requirements for classification as a prepared rubber accelerator under tariff item 3812.10.00.

PVI Pre-Vulcanization Inhibitor with Aromatic Accelerator

PVI (pre-vulcanization inhibitor) combined with an aromatic sulfenamide accelerator for storage-stable uncured rubber compounds. The accelerator component drives classification under tariff item 3812.10.00 as a prepared rubber accelerator.

Santocure TBzTD Rubber Accelerator Dispersion

Santocure TBzTD is a tetraisobutylthiuram disulfide accelerator dispersion containing aromatic-modified components for low-sulfur vulcanization systems. The prepared formulation qualifies under tariff item 3812.10.00 as a prepared rubber accelerator.

TBBS Rubber Accelerator (N-tert-Butyl-2-benzothiazolesulfenamide)

TBBS (N-tert-Butyl-2-benzothiazolesulfenamide) is a widely used delayed-action accelerator for NR and SR compounds in tire treads and sidewalls. Its aromatic benzothiazole sulfenamide structure mandates classification under tariff item 3812.10.00.

TMTD Aromatic-Activated Rubber Accelerator

TMTD (Tetramethylthiuram disulfide) with aromatic activation system for fast-curing cable insulation compounds. The prepared aromatic accelerator blend qualifies under tariff item 3812.10.00 as a prepared rubber accelerator.

ZDBC Aromatic-Modified Accelerator Paste

ZDBC (Zinc dibenzyldithiocarbamate) paste formulation containing aromatic benzyl groups for ultra-accelerator applications in thin rubber goods. The aromatic modification places it under tariff item 3812.10.00 as a prepared rubber accelerator.

Benzoflex 9-88 SG Aromatic Benzoate Plasticizer

Benzoflex 9-88 SG is a high-solvency neopentyl glycol dibenzoate plasticizer with an aromatic structure, used in PVC inks and lacquers. It is a compound plasticizer for plastics, falling under tariff item 3812.20.00 as it is not elsewhere specified or included.

Butyl Benzyl Phthalate (BBP) Plasticizer

Butyl benzyl phthalate (BBP) is a fast-fusing compound plasticizer used in PVC flooring and rubber sealants. It is a compound plasticizer for plastics, classifiable under tariff item 3812.20.00, despite regulatory restrictions on some applications.

Citroflex A4 Citrate Plasticizer

Citroflex A4 is an acetyl tributyl citrate plasticizer, a bio-degradable compound plasticizer for food packaging films and medical tubing. It falls under tariff item 3812.20.00 as a compound plasticizer for plastics.

Citroflex A6 Modified Aromatic Plasticizer

Citroflex A6 is an acetyl tributyl citrate plasticizer with aromatic modifiers, used for food-contact PVC films and medical tubing. It qualifies as a compound plasticizer for plastics under tariff item 3812.20.00, as it is a mixture of plasticizing agents.

DINP Diisononyl Phthalate Compound Plasticizer

DINP (diisononyl phthalate) compound plasticizer improves flexibility in flooring, cables, and rubber seals. It is a compound plasticizer for rubber and plastics, classifiable under tariff item 3812.20.00.

DINP Modified Aromatic Plasticizer Blend

DINP blended with modified aromatic extenders is a compound plasticizer for rubber tire compounds and plastic films. It falls under tariff item 3812.20.00 as a mixture of plasticizers for rubber or plastics, not elsewhere specified.

DOP Aromatic Plasticizer for PVC

DOP (di(2-ethylhexyl) phthalate) is a liquid aromatic plasticizer used to enhance flexibility in PVC compounds for cables and flooring. It is a compound plasticizer for plastics, classifiable under tariff item 3812.20.00.

DOP Dioctyl Phthalate Plasticizer

DOP (dioctyl phthalate) is a high-performance compound plasticizer used to enhance flexibility and durability in PVC plastics and rubber products. It falls under tariff item 3812.20.00 as a compound plasticizer.

Epoxidized Soybean Oil (ESBO) Plasticizer

Epoxidized soybean oil (ESBO) is a bio-based compound plasticizer and co-stabilizer for PVC, reducing reliance on petroleum derivatives. It is a compound plasticizer for plastics, classifiable under tariff item 3812.20.00.

Jayflex DINCH Non-Phthalate Plasticizer

Jayflex DINCH is a non-phthalate compound plasticizer for sensitive applications like medical devices and toys. It falls under tariff item 3812.20.00 as a compound plasticizer for plastics.

MESAMOLL Aromatic Phosphate Plasticizer

MESAMOLL is an alkylsulfosuccinate-based plasticizer with aromatic phosphate modifiers for soft PVC and rubber sealants. It is a compound plasticizer for rubber or plastics, falling under tariff item 3812.20.00.

Palatinol N Aromatic Phthalate for Wire & Cable

Palatinol N is a fast-fusing aromatic phthalate plasticizer for PVC wire insulation and flexible cord compounds. It is a compound plasticizer for plastics, classifiable under tariff item 3812.20.00.

Polycizer W-1000 Aromatic Polyol Plasticizer

Polycizer W-1000 is a polyester adipate with aromatic end-caps for low-temperature plasticized PVC roofing membranes. It is a compound plasticizer for plastics, falling under tariff item 3812.20.00.

Rubber Process Oil Aromatic Plasticizer

High aromatic content process oil plasticizer for synthetic rubber tire treads and conveyor belts. It is a compound plasticizer for rubber, classifiable under tariff item 3812.20.00.

TPAC Aromatic Terephthalate Plasticizer

TPAC is a terephthalic acid-based aromatic plasticizer compound for high-temperature NBR rubber seals and automotive gaskets. It is a compound plasticizer for rubber, falling under tariff item 3812.20.00.

Polymerized TMQ Antioxidant for Tires (Grade 224)

Polymerized TMQ antioxidant in Grade 224, composed of high-molecular-weight oligomers of 2,2,4-trimethyl-1,2-dihydroquinoline, used to protect tire carcass rubber from oxidative aging and flex cracking. This product falls under tariff item 3812.31.00 as a mixture of TMQ oligomers serving as an anti-oxidizing preparation for rubber.

RD-TMQ Oligomer Mixture for Conveyor Belts

RD-TMQ oligomer mixture for conveyor belts, consisting of polymerized 2,2,4-trimethyl-1,2-dihydroquinoline oligomers that protect rubber from flex cracking and aging. This product is classified under 3812.31.00 as a mixture of TMQ oligomers used as an anti-oxidizing preparation for rubber.

Sanitized TMQ Rubber Stabilizer for Medical Tubing

Sanitized TMQ rubber stabilizer for medical tubing, a purified mixture of 2,2,4-trimethyl-1,2-dihydroquinoline oligomers that prevents oxidative failure in pharmaceutical-grade rubber. This product falls under 3812.31.00 as a mixture of TMQ oligomers serving as an anti-oxidizing preparation for rubber.

TMQ-8 Rubber Aging Preventer Oligomers

TMQ-8 rubber aging preventer oligomers, an industrial mixture of 2,2,4-trimethyl-1,2-dihydroquinoline oligomers used in automotive hoses and seals for oxidation protection. This product is classified under 3812.31.00 as a mixture of TMQ oligomers used as an anti-oxidizing preparation for rubber.

TMQ Rubber Antioxidant 2,2,4-Trimethyl-1,2-Dihydroquinoline Oligomers

TMQ rubber antioxidant consisting of a specific mixture of oligomers based on 2,2,4-trimethyl-1,2-dihydroquinoline, used to protect rubber from oxidative degradation during processing and service. This product falls under 3812.31.00 as a mixture of TMQ oligomers serving as an anti-oxidizing preparation for rubber.

Vulkanox HS Rubber Stabilizer TMQ

Vulkanox HS rubber stabilizer TMQ, a commercial-grade mixture of 2,2,4-trimethyl-1,2-dihydroquinoline oligomers designed for tire and rubber compounding, providing long-term heat and oxidation resistance. This product is classified under 3812.31.00 as a mixture of TMQ oligomers used as an anti-oxidizing preparation for rubber.

4020NA Rubber Stabilizer Concentrate

> A rubber stabilizer concentrate containing N-(4-ethoxymethylphenyl)-N'-isopropyl-p-phenylenediamine mixtures, specifically formulated for agricultural tires to enhance flex fatigue resistance. This product acts as an anti-oxidizing preparation for rubber, falling under the compound stabilizers category of heading 38.12.

6PPD Rubber Antidegradant Premix

> A liquid aromatic antioxidant premix containing 6PPD, used in natural rubber for protection against dynamic weathering in truck tires. This product is an anti-oxidizing preparation for rubber, falling under tariff item 3812.39.00.

6PPD Rubber Antioxidant Mixture

> A mixture of N,N'-diaryl-p-phenylenediamine compounds, primarily 6PPD, used as an antiozonant and antioxidant in tire manufacturing. It protects rubber from oxidative degradation and ozone cracking, qualifying as an anti-oxidizing preparation for rubber under tariff item 3812.39.00.

Antilux 654 Rubber Light Stabilizer

> A nickel-based aromatic complex providing UV protection in colored rubber mats and flooring. Though primarily a light stabilizer, its aromatic structure qualifies it as an anti-oxidizing preparation for rubber under tariff item 3812.39.00.

Chemodil Antioxidant Paste

> A cohesive paste of alkylated diphenylamines in a petroleum jelly base, used for manual addition to small rubber batches. The aromatic antioxidant content places it under tariff item 3812.39.00 as an anti-oxidizing preparation for rubber.

Duradene Rubber Antioxidant Blend

> A synergistic blend of aromatic amines and phenolics designed for EPDM rubber weatherstrips in automotive sealing systems. The presence of aromatic antioxidants places it under tariff item 3812.39.00 as an anti-oxidizing preparation for rubber.

Flexon 815 Rubber Stabilizer Concentrate

> An oil-extended aromatic antioxidant concentrate for natural rubber latex stabilization in dipped goods like examination gloves. This product is an anti-oxidizing preparation for rubber, classified under tariff item 3812.39.00.

IPPD Antioxidant Blend for Rubber

> An antioxidant blend containing N-isopropyl-N'-phenyl-p-phenylenediamine (IPPD) and related diaryl-p-phenylenediamines, formulated for synthetic rubber compounds like NR and SBR. It provides long-term protection against thermal oxidation, making it an anti-oxidizing preparation for rubber under tariff item 3812.39.00.

Irganox 1010 Rubber Antioxidant

> A high molecular weight hindered phenolic primary antioxidant used in rubber compounding to prevent oxidative degradation during processing and long-term use. This product is an anti-oxidizing preparation for rubber, falling under tariff item 3812.39.00.

N762 DPPD Rubber Stabilizer Blend

> A rubber stabilizer blend designated as N762, containing N-(1,3-dimethylbutyl)-N'-phenyl-p- phenylenediamine (6PPD synonym), used in EPDM rubber roofing and automotive seals. It prevents cracking from weather exposure, qualifying as an anti-oxidizing preparation for rubber under tariff item 3812.39.00.

Naugard Q Rubber Stabilizer

> A quinoline-based polymeric antioxidant providing flex cracking resistance in butyl rubber inner tubes. It contains modified aromatic structures qualifying it as an anti-oxidizing preparation for rubber under tariff item 3812.39.00.

PDE-6 Rubber Antiozonant Mixture

> A mixture of N,N'-bis(1,4-dimethylpentyl)-p-phenylenediamine and diaryl derivatives, designed for truck tire treads to provide protection against ozone cracking. This product is an anti-oxidizing preparation for rubber, classified under tariff item 3812.39.00.

RD Antioxidant Diaryl Blend

> A mixture of phenyl-α-naphthylamine and diaryl-p-phenylenediamine, used for natural rubber belting and transmission belts. It combines immediate and long-term protection against oxidative degradation, qualifying as an anti-oxidizing preparation for rubber under tariff item 3812.39.00.

TMQDiaryl Amine Antioxidant Mixture

> A blend of polymerized 2,2,4-trimethyl-1,2-dihydroquinoline (TMQ) with N,N'-diaryl-p- phenylenediamines, providing synergistic rubber protection in conveyor belts and hoses. It offers heat aging resistance and atmospheric degradation protection, falling under tariff item 3812.39.00 as an anti-oxidizing preparation.