Disodium (2Z)-but-2-enedioate

CAS 371-47-1

Companies reported imports and no US production of this chemical to EPA for 2019.

US productionZero

Import value, 2024$139M

Import volume475.3K lb

Import dependency100%

Top sourceChina 67%

Production is reported production, not a complete census of factories. Production reporting year: 2019. Import value and source-country shares describe a shared customs category, not a separate chemical measurement.

Disodium (2Z)-but-2-enedioate · US import value by year

2013: $117M · Peak 2022: $187M · 2024: $139M · 2025: $118M

Where It Comes From

Customs basis: HS 291719 · basket

EPA reports by year

2019: US production Zero · Imports 475.3K lb

These shares come from HS customs code 291719, which covers 176 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 67%ChinaCA 13%CanadaAT 4%AustriaIN 4%IndiaJP 4%Japan

Taiwan
Netherlands
Switzerland
Mexico
South Africa
Denmark
Malaysia
Ukraine
Colombia
Hong Kong
Slovakia

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.

Lanxess

Why It Matters

Sectors

Construction

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

•Pigment in Construction (100%)Processing—incorporation into formulation, mixture, or reaction product

Vendor Pricing

$0.31/gAA BLOCKS

CountryUnited States

Pack$156.00 / 500 g

Purity99%

Vendors2 available

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

1 more vendor

Vendor	Country	$/g	Pack	Purity
Aaron Chemicals LLC	Hong Kong	$0.41	500 g	95%

Chemical Identity

CAS371-47-1

PubChem CID9734

DTXSIDDTXSID5059901

FormulaC4H2Na2O4

Mol. Weight160.04 g/mol

SMILESC(=CC(=O)[O-])C(=O)[O-].[Na+].[Na+]

Data Sources

EPA CompTox (DSSTox) · DTXSID5059901Retrieved 2026-04-06
PubChem · compound 9734Retrieved 2026-04-06
EPA Chemical Data ReportingReporting year: 2019 · Retrieved 2026-10-04
EPA Chemical Data ReportingReporting year: 2019 · Retrieved 2026-10-04
US Census international tradeReporting year: 2024 · Retrieved 2026-10-04

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Brief citations

Disodium (2Z)-but-2-enedioate (CAS 371-47-1) https://chemicalindependence.com/chemical/371-47-1/ EPA CompTox (DSSTox): DTXSID5059901. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID5059901 PubChem: 9734. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/9734 EPA Chemical Data Reporting: 371-47-1. Reporting year: 2019. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 371-47-1. Reporting year: 2019. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 291719 for CAS 371-47-1. Reporting year: 2024. https://usatrade.census.gov/