Propanoic acid, zinc salt (2:1)

CAS 557-28-8

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

Molecular structure of 557-28-8 — 1 Zn²⁺

US productionZero

Import value, 2024$30M

Import volume3.9K lb

Import dependency100%

Top sourceCanada 27%

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.

Propanoic acid, zinc salt (2:1) · US import value by year

2013: $27M · Peak 2022: $32M · 2024: $30M · 2025: $30M

Where It Comes From

Customs basis: HS 291550 · basket

EPA reports by year

2019: US production Zero · Imports 3.9K lb

These shares come from HS customs code 291550, which covers 61 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).

CA 27%CanadaCN 14%ChinaIT 13%ItalyMX 11%MexicoIN 10%India

Slovakia
Sweden
Argentina
Switzerland

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.

The Goodyear Tire & Rubber

Why It Matters

No EPA sector or FDA product records name a use for this chemical.

Vendor Pricing

$0.37/gAaron Chemicals LLC

CountryHong Kong

Pack$183.00 / 500 g

Purity97%

Vendors8 available

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

7 more vendors

Vendor	Country	$/g	Pack	Purity
Angene Chemical	China → Hong Kong	$0.39	500 g	97%
ALFA AESAR	Germany	$0.51	1 kg	97%
A2B Chem LLC	United States	$0.78	250 g	97%
AA BLOCKS	United States	$1.01	250 g	97%
AstaTech (2 weeks)	United States	$2.80	25 g	95%
Angene International Limited	United States	$19.20	5 g	97%
Angene	China → Hong Kong	$4266.67	30 mg	97%

Chemical Identity

CAS557-28-8

PubChem CID11189

DTXSIDDTXSID10890510

FormulaC6H10O4Zn

Mol. Weight211.5 g/mol

SMILESCCC(=O)[O-].CCC(=O)[O-].[Zn+2]

Data Sources

EPA CompTox (DSSTox) · DTXSID10890510Retrieved 2026-04-06
PubChem · compound 11189Retrieved 2026-04-06
EPA Chemical Data ReportingReporting year: 2019 · Retrieved 2026-10-04
US Census international tradeReporting year: 2024 · Retrieved 2026-10-04

← Back to Dashboard

Brief citations

Propanoic acid, zinc salt (2:1) (CAS 557-28-8) https://chemicalindependence.com/chemical/557-28-8/ EPA CompTox (DSSTox): DTXSID10890510. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID10890510 PubChem: 11189. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/11189 EPA Chemical Data Reporting: 557-28-8. Reporting year: 2019. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 291550 for CAS 557-28-8. Reporting year: 2024. https://usatrade.census.gov/