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4-Toluenesulfonamide

CAS 70-55-3

U.S. production volumes are classified as confidential business information.

Molecular structure of 70-55-3
US productionCBI
Import value, 2024$2.0B
Top sourceIreland 63%

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. US production volume is confidential. 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 293590 · basket

EPA reports by year
2023
US production Confidential · Imports Confidential
2019
US production Confidential · Imports Confidential

These shares come from HS customs code 293590, which covers 182 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.

Source Countries
IE 63%IrelandSG 14%SingaporeIN 7%IndiaCN 7%ChinaCH 2%Switzerland
EPA-registered importers (2)
Tri-Iso
Vandemark Chemical

Why It Matters

Sectors
Plastics & RubberPaints & CoatingsCore Chemicals
Downstream UsesNot recorded
FDA Shortage Status
No FDA shortage records

Industrial Uses

Used in 3 sectors as 3 functional roles.

  • •Monomers in All Other Basic Organic Chemical ManufacturingProcessing as a reactant
  • •Intermediate in Paint and Coating Manufacturing (100%)Processing as a reactant
  • •Plasticizer in Plastics Material and Resin Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product

Vendor Pricing

$0.01/gAaron Chemicals LLC
CountryHong Kong
Pack$6.00 / 500 g
Purity99%
Vendors31 available

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

30 more vendors
VendorCountry$/gPackPurity
Angene ChemicalChina → Hong Kong$0.011 kg99%
A2B Chem LLCUnited States$0.021 kg98%
AA BLOCKSUnited States$0.03500 g98%
BLD Pharmatech Ltd.China$0.031 kg98%
BLD Pharmatech Co., LimitedUnited States$0.031 kg98%
Ambeed, Inc.United States$0.031 kg98%
Fluorochem EUGermany$0.031 kg95%
Fluorochem UKUnited Kingdom$0.031 kg95%
SynthonixUnited States$0.041 kg95%
BLD Pharmatech GmbHGermany$0.05500 g98%
ChemsceneUnited States$0.051 kg—
Angene International LimitedUnited States$0.06500 g98%
AK Scientific SpecializedUnited States$0.061 kg95%
ALFA AESARGermany$0.072.5 kg98%
AK Scientific, Inc.United States$0.091 kg98%
Sigma-Aldrich (Rush Stock)Germany$0.111 kg98%
Sigma-AldrichGermany$0.111 kg98%
MedChemExpress MCESweden$0.31100 g99.98%
AldlabUnited States$5.521 g95%
HTS Biochemie InnovationenGermany$120.0010 g95%
SpecsNetherlands$132.1310 g90%
Labotest KGGermany$217.805000 mg90%
Key Organics Ltd.United Kingdom$1034.00500 mg95%
Otava, Ltd.Ukraine$2724.0050 mg95%
Princeton BioMolecular Research (SC)United States$2900.00100 mg90%
Vitas M Chemical LimitedHong Kong$3170.00100 mg90%
ChemDiv, Inc.United States$4070.00100 mg90%
Life Chemicals Inc.Ukraine → Canada$4200.0050 mg90%
AngeneChina → Hong Kong$4266.6730 mg99%
TimTec, LLC (back-ordered)United States$32000.0015 mg94%

Chemical Identity

CAS70-55-3
PubChem CID6269
DTXSIDDTXSID8029105
FormulaC7H9NO2S
Mol. Weight171.22 g/mol
SMILESCC1=CC=C(C=C1)S(=O)(=O)N

Data Sources

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Brief citations

4-Toluenesulfonamide (CAS 70-55-3) https://chemicalindependence.com/chemical/70-55-3/ EPA CompTox (DSSTox): DTXSID8029105. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID8029105 PubChem: 6269. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/6269 EPA Chemical Data Reporting: 70-55-3. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 70-55-3. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 293590 for CAS 70-55-3. Reporting year: 2024. https://usatrade.census.gov/