4-((Morpholinothio)thioxomethyl)morpholine

CAS 13752-51-7

Companies reported imports and no US production of this chemical to EPA for 2023.

US productionZero

Import value, 2024$6.4B

Import volume38.4K lb

Import dependency100%

Top sourceSingapore 36%

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.

4-((Morpholinothio)thioxomethyl)morpholine · US import value by year

2013: $4.8B · Peak 2022: $9.8B · 2024: $6.4B · 2025: $9.2B

Where It Comes From

Customs basis: HS 293499 · basket

EPA reports by year

2023: US production Zero · Imports 38.4K lb
2019: US production Confidential · Imports Confidential

These shares come from HS customs code 293499, which covers 575 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).

SG 36%SingaporeIE 23%IrelandCN 11%ChinaCH 6%SwitzerlandIN 5%India

Finland
Netherlands
Canada
Indonesia
Mexico
Taiwan
South Korea
Austria
Croatia
Sweden
Ukraine
Denmark
Israel
Czech Republic
New Zealand
Hong Kong
Kyrgyzstan
Australia
Portugal
South Africa
Poland
Slovenia
Brazil
Slovakia
Vietnam
Latvia
Malta
Hungary
Romania
Kenya
Belarus
Russia
Turkey
Norway

EPA-registered importers (1)

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

Akrochem

Why It Matters

Sectors

Plastics & Rubber

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 Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product

Vendor Pricing

$0.36/gA2B Chem LLC (2 weeks)

CountryUnited States

Pack$890.00 / 2.5 kg

PurityNot recorded

Vendors4 available

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

3 more vendors

Vendor	Country	$/g	Pack	Purity
AA BLOCKS (2 weeks)	United States	$0.37	2.5 kg	—
Aaron Chemicals LLC	Hong Kong	$0.91	500 g	—
TimTec, LLC	United States	$90000.00	2 mg	90%

Chemical Identity

CAS13752-51-7

PubChem CID83700

DTXSIDDTXSID5021095

FormulaC9H16N2O2S2

Mol. Weight248.4 g/mol

SMILESC1COCCN1C(=S)SN2CCOCC2

Data Sources

EPA CompTox (DSSTox) · DTXSID5021095Retrieved 2026-04-06
PubChem · compound 83700Retrieved 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

4-((Morpholinothio)thioxomethyl)morpholine (CAS 13752-51-7) https://chemicalindependence.com/chemical/13752-51-7/ EPA CompTox (DSSTox): DTXSID5021095. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID5021095 PubChem: 83700. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/83700 EPA Chemical Data Reporting: 13752-51-7. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 13752-51-7. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 293499 for CAS 13752-51-7. Reporting year: 2024. https://usatrade.census.gov/