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HSChapter 29
U.S. imports of benzothiazole ring-system heterocyclic compounds (HS 293420) totaled $7.0M in May 2026, traded with 16 countries.
Importers of Benzothiazole Ring-System Heterocyclic Compounds paid $1000K in duties in May 2026 — an effective duty rate of 16% on $6.2M in dutiable value, based on actual customs collections rather than the published tariff schedule. Benzothiazole Ring-System Heterocyclic Compounds imports of $7.0M in May 2026 ran 21% above the year-to-date monthly average of $5.8M.
Last updated: May 2026 dataBenzothiazole-ring compounds are a commercially important class of heterocyclics with dominant applications in rubber vulcanization chemistry. The heading's most actively traded subheadings cover the classic rubber accelerator family: 2-mercaptobenzothiazole (2934201500), its sodium salt (2934202000), 2,2-dithiobisbenzothiazole (2934201000), and N-tert-butyl-2-benzothiazolesulfenamide (2934200500) — all primary or secondary accelerators used in tire and industrial rubber manufacturing. Additional subheadings cover pesticides (2934203500) and other aromatic compounds (2934208000). China has historically been a dominant supplier of rubber accelerators in this family, and importers should monitor Section 301 tariff applicability for Chinese-origin shipments. Purity and active-content specifications are the key quality parameters for rubber-grade accelerators.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
Many rubber processing chemicals, including benzothiazole-based accelerators, originating from China are subject to Section 301 tariffs. Importers should verify the current List classification and applicable additional duty for their specific compound and 10-digit HTS subheading with CBP or a licensed customs broker, as rates and product coverage can change.
Classification turns on the specific chemical identity: 2-mercaptobenzothiazole (MBT) at 2934201500, its sodium salt at 2934202000, 2,2-dithiobisbenzothiazole (MBTS) at 2934201000, and N-tert-butyl-2-benzothiazolesulfenamide (TBBS) at 2934200500 are each separately enumerated. Importers should provide the CAS number and chemical name on entry documentation to support correct classification and avoid misclassification into the residual 'other' subheading (2934208000).
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Monthly import values over time
HS10 import codes under this HS6 parent. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 2934200500 | N-TERT-BUTYL-2-BENZOTHIAZOLESULFENAMIDE | $1.9M | 16.53% | 95.47% | $320K |
| 2934208000 | OTHER CMPDS CONT A BENZOTHIAZOLE RING SYSTEM | $1.2M | 5.41% | 83.27% | $65K |
| 2934202000 | 2-MERCAPTOBENZOTHIAZOLE, SODIUM SALT | $1.0M | 16.50% | 100.00% | $166K |
| 2934201500 | 2-MERCAPTOBENZOTHIAZOLE ETC | $430K | 38.14% | 100.00% | $164K |
| 2934201000 | 2,2-DITHIOBISBENZOTHIAZOLE | $298K | 19.59% | 100.00% | $58K |
| 2934202500 | 2-AMINO-5,6-DICHLOROBENZOTHIAZOLE; ETC. | $234K | 12.97% | 100.00% | $30K |
| 2934204000 | PROD IN U.S. NOTE 3 TO SEC 6 CONT A BENZOTHIAZ ETC | $64K | 15.28% | 80.73% | $10K |
| 2934203500 | PESTICIDES CONTAINING A BENZOTHIAZOLE RING ETC | $0 | -- | -- | -- |
N-TERT-BUTYL-2-BENZOTHIAZOLESULFENAMIDE
OTHER CMPDS CONT A BENZOTHIAZOLE RING SYSTEM
2-MERCAPTOBENZOTHIAZOLE, SODIUM SALT
2-MERCAPTOBENZOTHIAZOLE ETC
2,2-DITHIOBISBENZOTHIAZOLE
2-AMINO-5,6-DICHLOROBENZOTHIAZOLE; ETC.
PROD IN U.S. NOTE 3 TO SEC 6 CONT A BENZOTHIAZ ETC
PESTICIDES CONTAINING A BENZOTHIAZOLE RING ETC
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 2934200000 | CMPDS CONT A BENZOTHIAZOLE RING-SYSTEM ETC | $2.9M |
CMPDS CONT A BENZOTHIAZOLE RING-SYSTEM ETC
747.8K kg
NUCLEIC ACIDS & SALTS; OTHER HETEROCYCLIC CMP, NES
HS 293499
HETEROCYCLIC COMP W NITROGEN HETERO-ATM ONLY NESOI
HS 293399
POLYPEPTIDE PROTEIN& GLYCOPROTEIN HORMONES &DERIV
HS 293719
CMPDS CONT AN UNFUSED PYRIDINE RING ETC NESOI
HS 293339
COMP WITH PYRIMIDINE OR PIPERAZINE RING, NESOI
HS 293359
ANTIBIOTICS, NESOI
HS 294190
| State | Imports | Exports | Balance |
|---|---|---|---|
| South Carolina | $2.5M | $1.6M | -$960K |
| Ohio | $1.2M | $46K | -$1.1M |
| Texas | $271K | $477K | +$206K |
| Port | Imports | Exports | Balance |
|---|---|---|---|
| CHARLESTON, SC | $2.5M | $1.2M | -$1.3M |
| SAVANNAH, GA | $1.3M | -- | -$1.3M |
| LAREDO, TX | $81K | $1.1M | +$999K |