3-((Ethylphenylamino)methyl)benzenesulfonic acid

CAS 101-11-1

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

US productionCBI

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

Import value, 2024$41M

Top sourceIndia 37%

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 292149 · basket

EPA reports by year

2023: US production Confidential · Imports Confidential
2019: US production Confidential · Imports Confidential

These shares come from HS customs code 292149, which covers 80 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).

IN 37%IndiaCN 25%ChinaDE 14%GermanyMX 9%MexicoGB 4%United Kingdom

Israel
Ireland
Czech Republic
Singapore
Slovakia
Lithuania
Belgium
Australia

Domestic parents -- activity not disclosed (1)

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

Sensient Colors

Why It Matters

Sectors

Food

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

•Dye in Food, beverage, and tobacco product manufacturing (100%)Processing as a reactant

Vendor Pricing

$0.11/gA2B Chem LLC

CountryUnited States

Pack$106.00 / 1 kg

Purity98%

Vendors15 available

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

14 more vendors

Vendor	Country	$/g	Pack	Purity
AA BLOCKS	United States	$0.12	1 kg	98%
BLD Pharmatech Co., Limited	United States	$0.15	1 kg	98%
BLD Pharmatech GmbH	Germany	$0.15	1 kg	98%
BLD Pharmatech Ltd.	China	$0.15	1 kg	98%
Ambeed, Inc.	United States	$0.15	1 kg	98%
AstaTech, Inc	United States	$0.16	500 g	95%
Aaron Chemicals LLC	Hong Kong	$0.18	500 g	98%
Angene Chemical	China → Hong Kong	$0.20	500 g	98%
Combi-Blocks, Inc.	United States	$0.25	1 kg	95%
Angene International Limited	United States	$0.57	250 g	95%
AK Scientific Specialized	United States	$2.79	100 g	95%
AK Scientific, Inc.	United States	$3.72	100 g	95%
Key Organics Ltd.	United Kingdom	$2740.00	50 mg	97%
Angene	China → Hong Kong	$4266.67	30 mg	98%

Chemical Identity

CAS101-11-1

PubChem CID66858

DTXSIDDTXSID5029136

FormulaC15H17NO3S

Mol. Weight291.4 g/mol

SMILESCCN(CC1=CC(=CC=C1)S(=O)(=O)O)C2=CC=CC=C2

Data Sources

EPA CompTox (DSSTox) · DTXSID5029136Retrieved 2026-04-06
PubChem · compound 66858Retrieved 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

3-((Ethylphenylamino)methyl)benzenesulfonic acid (CAS 101-11-1) https://chemicalindependence.com/chemical/101-11-1/ EPA CompTox (DSSTox): DTXSID5029136. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID5029136 PubChem: 66858. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/66858 EPA Chemical Data Reporting: 101-11-1. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 101-11-1. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 292149 for CAS 101-11-1. Reporting year: 2024. https://usatrade.census.gov/