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1,3-Dimethylol-5,5-dimethylhydantoin

CAS 6440-58-0

Used in 2 industrial sectors tracked by the EPA.

Molecular structure of 6440-58-0
US production1.2M lb
Import value, 2024$19M
Import volume55.9K lb
Import dependency4%
Top sourceChina 55%

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.

Where It Comes From

Customs basis: HS 293321 · basket

EPA reports by year
2023
US production 1.2M lb · Imports 55.9K lb
2019
US production Confidential · Imports 91.8K lb

These shares come from HS customs code 293321, which covers 22 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.

Source Countries
CN 55%ChinaTW 34%TaiwanIL 3%IsraelES 2%SpainIN 1%India
EPA-registered manufacturers (2)
Arxada
Coast Southwest
Domestic parents -- activity not disclosed (1)
Wintersun International
EPA-registered importers (2)
Catalynt Solutions
Target

Why It Matters

Sectors
Metals & MiningCore Chemicals
Downstream UsesNot recorded
FDA Shortage Status
No FDA shortage records

Industrial Uses

Used in 2 sectors as 2 functional roles.

  • •Preservative in All Other Chemical Product and Preparation Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product
  • •Intermediate in All Other Chemical Product and Preparation Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product
  • •Preservative in OtherProcessing—incorporation into formulation, mixture, or reaction product

Vendor Pricing

$0.39/gAaron Chemicals LLC
CountryHong Kong
Pack$195.00 / 500 g
Purity95%
Vendors18 available

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

17 more vendors
VendorCountry$/gPackPurity
Angene ChemicalChina → Hong Kong$0.42500 g95%
A2B Chem LLCUnited States$0.71500 g95%
AA BLOCKSUnited States$0.93500 g95%
Combi-Blocks, Inc.United States$0.96500 g95%
Apollo Scientific UKUnited Kingdom$1.082.5 kg95%
BLD Pharmatech Co., LimitedUnited States$1.13100 g95%
BLD Pharmatech GmbHGermany$1.13100 g95%
BLD Pharmatech Ltd.China$1.13100 g95%
Ambeed, Inc.United States$1.13100 g95%
AK Scientific SpecializedUnited States$1.13100 g95%
Fluorochem EUGermany$1.4025 g95%
Fluorochem UKUnited Kingdom$2.0010 g95%
SynthonixUnited States$4.0010 g97%
AstaTech (2 weeks)United States$13.7225 g95%
AK Scientific, Inc.United States$20.205 g98%
Angene International LimitedUnited States$38.205 g98%
AngeneChina → Hong Kong$4266.6730 mg95%

Chemical Identity

CAS6440-58-0
PubChem CID22947
DTXSIDDTXSID8035217
FormulaC7H12N2O4
Mol. Weight188.18 g/mol
SMILESCC1(C(=O)N(C(=O)N1CO)CO)C

Data Sources

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Brief citations

1,3-Dimethylol-5,5-dimethylhydantoin (CAS 6440-58-0) https://chemicalindependence.com/chemical/6440-58-0/ EPA CompTox (DSSTox): DTXSID8035217. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID8035217 PubChem: 22947. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/22947 EPA Chemical Data Reporting: 6440-58-0. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 6440-58-0. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 293321 for CAS 6440-58-0. Reporting year: 2024. https://usatrade.census.gov/