Borax (B4Na2O7.10H2O)

CAS 1303-96-4

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

Molecular structure of 1303-96-4 — 10 H₂O · 2 Na⁺

US productionCBI

Confidential Business Information. The EPA withholds this volume because publishing it could reveal the reporting company's trade secrets.

Import value, 2024$73M

Top sourceTurkey 97%

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.

Where It Comes From

Customs basis: HS 284019 · exact

EPA reports by year

2023: US production Confidential · Imports Confidential
2019: US production Confidential · Imports Confidential

Source Countries

Country of origin for US imports, from Census customs data (2024).

TR 97%TurkeyIT 1%ItalyAR 1%Argentina

China
Spain
Guatemala
India
Germany
Peru
United Kingdom
Colombia
Switzerland
Mexico

EPA-registered manufacturers (2)

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

Macdermid

Vibrantz Technologies

Domestic parents -- activity not disclosed (4)

EPA records name a US company for this chemical but do not disclose whether the company made it here or imported it.

Advanced Micronutrient Products

Polyventive

Rio Tinto America

Target

EPA-registered importers (2)

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

Dollar General Cdr

Haifa North America

Why It Matters

Sectors

AgricultureConstructionCore Chemicals

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

Used in 4 sectors as 6 functional roles.

•Soil amendments (fertilizers) in Pesticide, Fertilizer, and Other Agricultural Chemical ManufacturingNot Known or Reasonably Ascertainable
•Etching agent in All Other Chemical Product and Preparation ManufacturingProcessing—incorporation into formulation, mixture, or reaction product
•Chelating agent in All Other Chemical Product and Preparation ManufacturingProcessing—incorporation into formulation, mixture, or reaction product
•Plating agent in All Other Chemical Product and Preparation ManufacturingProcessing—incorporation into formulation, mixture, or reaction product
•Flame retardant in ConstructionProcessing—incorporation into article
•Abrasives in Not Known or Reasonably Ascertainable (100%)Processing—incorporation into formulation, mixture, or reaction product

Vendor Pricing

$0.01/gA2B Chem LLC

CountryUnited States

Pack$495.00 / 50 kg

Purity99.5%

Vendors7 available

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

6 more vendors

Vendor	Country	$/g	Pack	Purity
AA BLOCKS	United States	$0.01	10 kg	99.5%
Angene Chemical	China → Hong Kong	$0.01	500 g	99.99%
AK Scientific Specialized	United States	$0.05	1 kg	98%
AK Scientific, Inc.	United States	$0.06	1 kg	99.5%
Angene International Limited	United States	$0.82	100 g	99.5%
Angene	China → Hong Kong	$4266.67	30 mg	99.99%

Chemical Identity

CAS1303-96-4

PubChem CID16211214

DTXSIDDTXSID2034384

FormulaB4H20Na2O17

Mol. Weight381.4 g/mol

SMILESB1(OB2OB(OB(O1)O2)[O-])[O-].O.O.O.O.O.O.O.O.O.O.[Na+].[Na+]

Data Sources

EPA CompTox (DSSTox) · DTXSID2034384Retrieved 2026-04-06
PubChem · compound 16211214Retrieved 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

Borax (B4Na2O7.10H2O) (CAS 1303-96-4) https://chemicalindependence.com/chemical/1303-96-4/ EPA CompTox (DSSTox): DTXSID2034384. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID2034384 PubChem: 16211214. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/16211214 EPA Chemical Data Reporting: 1303-96-4. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 1303-96-4. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 284019 for CAS 1303-96-4. Reporting year: 2024. https://usatrade.census.gov/