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Isoascorbic acid

CAS 89-65-6

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

Molecular structure of 89-65-6
US productionCBI
Import value, 2024$286M
Top sourceChina 48%

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 293220 · basket

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

These shares come from HS customs code 293220, which covers 151 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.

Source Countries
CN 48%ChinaIN 15%IndiaJP 7%JapanGB 7%United KingdomCH 7%Switzerland
Domestic parents -- activity not disclosed (1)
Tilley Distribution Middle River
EPA-registered importers (3)
Dow Chemical
The Sherwin Williams
Wego Chemical Group

Why It Matters

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

Industrial Uses

Used in 5 sectors as 2 functional roles.

  • •Preservative in Food, beverage, and tobacco product manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product
  • •Reducing agent in Plastics Material and Resin Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product
  • •Reducing agent in Not Known or Reasonably AscertainableProcessing—incorporation into formulation, mixture, or reaction product
  • •Reducing agent in Paint and Coating ManufacturingProcessing—incorporation into formulation, mixture, or reaction product
  • •Reducing agent in All Other Chemical Product and Preparation Manufacturing (100%)Processing as a reactant

Vendor Pricing

$18.00/gTargetMol Chemicals
CountryChina (registered: United States)
Pack$36.00 / 2 g
Purity99.8%
Vendors5 available

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

4 more vendors
VendorCountry$/gPackPurity
SpecsNetherlands$68.9710 g90%
Vitas M Chemical LimitedHong Kong$81.605 g90%
Labotest KGGermany$217.805000 mg90%
Princeton BioMolecular Research (SC)United States$2900.00100 mg90%

Chemical Identity

CAS89-65-6
PubChem CID54675810
DTXSIDDTXSID6026537
FormulaC6H8O6
Mol. Weight176.12 g/mol
SMILESC(C(C1C(=C(C(=O)O1)O)O)O)O

Data Sources

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Brief citations

Isoascorbic acid (CAS 89-65-6) https://chemicalindependence.com/chemical/89-65-6/ EPA CompTox (DSSTox): DTXSID6026537. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID6026537 PubChem: 54675810. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/54675810 EPA Chemical Data Reporting: 89-65-6. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 89-65-6. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 293220 for CAS 89-65-6. Reporting year: 2024. https://usatrade.census.gov/