2,2'-Dithiobisbenzothiazole

CAS 120-78-5

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

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 Confidential · Imports Confidential

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.

Harwick Standard Distribution

R.T. Vanderbilt Holding

Toyo Tire North America Manufacturing

EPA-registered importers (11)

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

Akrochem

Axiom International

Flow Polymers

Lanxess

Show all 11

Michelin North America

Michelin Tire

Nishikawa Cooper

Ravago Holdings America

Sovereign Chemical

Sumitomo Rubber Usa

Why It Matters

Sectors

Metals & MiningPlastics & 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

Used in 1 sector as 3 functional roles.

•Polymerization promoter in Rubber Product ManufacturingProcessing—incorporation into formulation, mixture, or reaction product
•Catalyst in Rubber Product Manufacturing (100%)Processing—incorporation into article
•Chemical reaction regulator in Rubber Product Manufacturing (100%)Processing—incorporation into article

Vendor Pricing

$0.02/gAaron Chemicals LLC

CountryHong Kong

Pack$9.00 / 500 g

Purity98%

Vendors24 available

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

23 more vendors

Vendor	Country	$/g	Pack	Purity
Angene Chemical	China → Hong Kong	$0.02	500 g	98%
Biopharma PEG Scientific Inc.	United States	$0.06	2 kg	95%
Ambeed, Inc.	United States	$0.06	500 g	96%
A2B Chem LLC	United States	$0.11	500 g	96%
AA BLOCKS	United States	$0.14	500 g	96%
Combi-Blocks, Inc.	United States	$0.25	1 kg	97%
Fluorochem UK	United Kingdom	$0.29	25 g	95%
AK Scientific Specialized	United States	$0.41	100 g	95%
AK Scientific, Inc.	United States	$0.55	100 g	98%
Sigma-Aldrich (Rush Stock)	Germany	$0.55	100 g	99%
Sigma-Aldrich	Germany	$0.55	100 g	99%
Angene International Limited	United States	$0.99	100 g	95%
Synthonix	United States	$1.00	25 g	95%
AstaTech (2 weeks)	United States	$3.68	25 g	98%
Life Chemicals Inc.	Ukraine → Canada	$21.00	1 g	95%
TargetMol Chemicals	China → United States	$50.00	1 g	99.33%
Labotest KG	Germany	$453.00	1000 mg	90%
ChemBridge Corporation	Kazakhstan	$1860.00	100 mg	90%
Princeton BioMolecular Research (SC)	United States	$2900.00	100 mg	90%
Vitas M Chemical Limited	Hong Kong	$3170.00	100 mg	90%
ChemDiv, Inc.	United States	$4070.00	100 mg	90%
Angene	China → Hong Kong	$4266.67	30 mg	98%
TimTec, LLC (back-ordered)	United States	$32000.00	15 mg	94%

Chemical Identity

CAS120-78-5

PubChem CID8447

DTXSIDDTXSID1020146

FormulaC14H8N2S4

Mol. Weight332.5 g/mol

SMILESC1=CC=C2C(=C1)N=C(S2)SSC3=NC4=CC=CC=C4S3

Data Sources

EPA CompTox (DSSTox) · DTXSID1020146Retrieved 2026-04-06
PubChem · compound 8447Retrieved 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

2,2'-Dithiobisbenzothiazole (CAS 120-78-5) https://chemicalindependence.com/chemical/120-78-5/ EPA CompTox (DSSTox): DTXSID1020146. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID1020146 PubChem: 8447. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/8447 EPA Chemical Data Reporting: 120-78-5. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 120-78-5. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 293420 for CAS 120-78-5. Reporting year: 2024. https://usatrade.census.gov/