Zinc 2-mercaptobenzothiazolate

CAS 155-04-4

EPA’s 2023 records show zero U.S. production of this chemical.

Molecular structure of 155-04-4 — 1 Zn²⁺

US productionZero

Import value, 2024$104M

Import volumeCBI

Confidential Business Information. The EPA withholds this volume because publishing it could reveal the reporting company's trade secrets.

Top sourceChina 56%

At least one company claimed its 2023 production or import volume for this chemical as confidential, so EPA withholds it.

Why supply is unknown

Production is reported production, not a complete census of factories. Production reporting year: 2023. Import value and source-country shares describe a shared customs category, not a separate chemical measurement.

Where It Comes From

Customs basis: HS 293420 · basket

EPA reports by year

2023: US production Zero · Imports Confidential
2019: US production Zero · Imports 458.2K lb

These shares come from HS customs code 293420, which covers 76 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.

Source Countries

Country of origin for US imports, from Census customs data (2024).

CN 56%ChinaBE 33%BelgiumIN 4%IndiaIT 3%ItalyES 2%Spain

Japan
Canada
Ireland
Slovakia
Ukraine
United Kingdom
Taiwan
Germany
Netherlands
South Korea
Switzerland
Greece
Croatia

Domestic parents -- activity not disclosed (3)

EPA records name a US company for this chemical but do not disclose whether the company made it here or imported it.

Akrochem

Lanxess

R.T. Vanderbilt Holding

EPA-registered importers (5)

Companies that report making or importing this chemical to the EPA. Registration is US-centric and does not indicate import origin.

Ravago S A · LU Luxembourg

Aalborz Chemical

Ravago Holdings America

Sovereign Chemical

Textile Rubber & Chemical

Why It Matters

Sectors

Plastics & RubberCore Chemicals

Downstream UsesNot recorded

FDA Shortage Status

Whether any manufacturer currently reports this drug as in shortage on the FDA Drug Shortages database. "Active Shortage" means at least one presentation has status "current."

No FDA shortage records

Industrial Uses

•Polymerization promoter in Rubber Product ManufacturingProcessing—incorporation into formulation, mixture, or reaction product

Vendor Pricing

$0.17/gAmbeed, Inc.

CountryUnited States

Pack$172.00 / 1 kg

Purity97%

Vendors2 available

Prices reflect listed pack sizes. Small research packs run far above bulk rates.

1 more vendor

Vendor	Country	$/g	Pack	Purity
AstaTech (2 weeks)	United States	$48.00	1 g	95%

Chemical Identity

CAS155-04-4

PubChem CID9071

DTXSIDDTXSID6020808

FormulaC14H8N2S4Zn

Mol. Weight397.9 g/mol

SMILESC1=CC=C2C(=C1)N=C(S2)[S-].C1=CC=C2C(=C1)N=C(S2)[S-].[Zn+2]

Data Sources

EPA CompTox (DSSTox) · DTXSID6020808Retrieved 2026-04-06
PubChem · compound 9071Retrieved 2026-04-06
EPA Chemical Data ReportingReporting year: 2023 · Retrieved 2026-10-04
EPA Chemical Data ReportingReporting year: 2023 · Retrieved 2026-10-04
US Census international tradeReporting year: 2024 · Retrieved 2026-10-04

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Brief citations

Zinc 2-mercaptobenzothiazolate (CAS 155-04-4) https://chemicalindependence.com/chemical/155-04-4/ EPA CompTox (DSSTox): DTXSID6020808. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID6020808 PubChem: 9071. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/9071 EPA Chemical Data Reporting: 155-04-4. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 155-04-4. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 293420 for CAS 155-04-4. Reporting year: 2024. https://usatrade.census.gov/