Boric acid (HBO2), calcium salt (2:1)

CAS 13701-64-9

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

Molecular structure of 13701-64-9 — 1 Ca²⁺

US productionCBI

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

Top sourceNo public record

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

EPA reports by year

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

EPA-registered manufacturers (1)

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

Milliken &

Domestic parents -- activity not disclosed (1)

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

Metals And Additives

EPA-registered importers (4)

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

Orbia Advance Corp S A B De C V · MX Mexico

Alphagary

Hollyfrontier Lsp Us Holding

Lanxess

Why It Matters

Sectors

ElectronicsMetals & MiningPlastics & RubberConsumer ProductsPaints & CoatingsCore 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 7 sectors as 2 functional roles.

•Corrosion inhibitor in Paint and Coating Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product
•Flame retardant in Services (4%)Processing—incorporation into article
•Flame retardant in Wholesale and Retail Trade (13%)Processing—incorporation into article
•Flame retardant in Electrical Equipment, Appliance, and Component Manufacturing (44%)Processing—incorporation into article
•Flame retardant in Fabricated Metal Product Manufacturing (34%)Processing—incorporation into article
•Flame retardant in Primary Metal Manufacturing (5%)Processing—incorporation into article
•Flame retardant in Custom Compounding of Purchased Resins (100%)Processing—incorporation into formulation, mixture, or reaction product

Vendor Pricing

$0.05/gAaron Chemicals LLC

CountryHong Kong

Pack$23.00 / 500 g

Purity34.5%

Vendors6 available

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

5 more vendors

Vendor	Country	$/g	Pack	Purity
Angene Chemical	China → Hong Kong	$0.05	500 g	96%
Combi-Blocks, Inc.	United States	$2.88	500 g	95%
A2B Chem LLC	United States	$3.05	500 g	95%
AA BLOCKS	United States	$3.22	500 g	95%
Angene	China → Hong Kong	$4266.67	30 mg	34.5%

Chemical Identity

CAS13701-64-9

PubChem CID10290800

DTXSIDDTXSID2094009

FormulaB2CaO4

Mol. Weight125.7 g/mol

SMILESB(=O)[O-].B(=O)[O-].[Ca+2]

Data Sources

EPA CompTox (DSSTox) · DTXSID2094009Retrieved 2026-04-06
PubChem · compound 10290800Retrieved 2026-04-06
EPA Chemical Data ReportingReporting year: 2023 · Retrieved 2026-10-04
EPA Chemical Data ReportingReporting year: 2023 · Retrieved 2026-10-04

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Brief citations

Boric acid (HBO2), calcium salt (2:1) (CAS 13701-64-9) https://chemicalindependence.com/chemical/13701-64-9/ EPA CompTox (DSSTox): DTXSID2094009. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID2094009 PubChem: 10290800. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/10290800 EPA Chemical Data Reporting: 13701-64-9. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 13701-64-9. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting