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Tris(2-butoxyethyl) phosphate

CAS 78-51-3

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

Molecular structure of 78-51-3
US productionCBI
Import value, 2024$123M
Top sourceChina 66%

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 291990 · basket

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

These shares come from HS customs code 291990, which covers 77 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.

Source Countries
CN 66%ChinaDE 18%GermanyJP 5%JapanIN 3%IndiaCH 3%Switzerland
EPA-registered manufacturers (1)
Brulin Holding
Domestic parents -- activity not disclosed (1)
Icl Specialty Products North America
EPA-registered importers (3)
Hydrite Chemical
Special Materials
Wego Chemical Group

Why It Matters

Sectors
ConstructionMetals & MiningPlastics & Rubber
Downstream UsesNot recorded
FDA Shortage Status
No FDA shortage records

Industrial Uses

Used in 2 sectors as 2 functional roles.

  • •Flame retardant in Plastics Material and Resin Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product
  • •Plasticizer in Plastics Material and Resin ManufacturingProcessing—incorporation into formulation, mixture, or reaction product
  • •Flame retardant in ConstructionProcessing—incorporation into formulation, mixture, or reaction product

Vendor Pricing

$0.06/gAaron Chemicals LLC
CountryHong Kong
Pack$32.00 / 500 g
Purity98%
Vendors17 available

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

16 more vendors
VendorCountry$/gPackPurity
Angene ChemicalChina → Hong Kong$0.07500 g98%
BLD Pharmatech GmbHGermany$0.101 kg98%
BLD Pharmatech Ltd.China$0.101 kg98%
A2B Chem LLCUnited States$0.10500 g95%
BLD Pharmatech Co., LimitedUnited States$0.111 kg98%
Ambeed, Inc.United States$0.111 kg98%
AA BLOCKSUnited States$0.11500 g95%
AK Scientific, Inc.United States$0.111 kg95%
Combi-Blocks, Inc.United States$0.251 kg95%
Angene International LimitedUnited States$0.27500 g95%
Sigma-Aldrich (Rush Stock)Germany$0.62100 g94%
Sigma-AldrichGermany$0.62100 g94%
MedKoo Biosciences, IncUnited States$2.50250 g98%
AstaTech (2 weeks)United States$3.0825 g95%
TargetMol ChemicalsChina → United States$60.001 g99.84%
AngeneChina → Hong Kong$4266.6730 mg98%

Chemical Identity

CAS78-51-3
PubChem CID6540
DTXSIDDTXSID5021758
FormulaC18H39O7P
Mol. Weight398.5 g/mol
SMILESCCCCOCCOP(=O)(OCCOCCCC)OCCOCCCC

Data Sources

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Brief citations

Tris(2-butoxyethyl) phosphate (CAS 78-51-3) https://chemicalindependence.com/chemical/78-51-3/ EPA CompTox (DSSTox): DTXSID5021758. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID5021758 PubChem: 6540. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/6540 EPA Chemical Data Reporting: 78-51-3. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 78-51-3. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 291990 for CAS 78-51-3. Reporting year: 2024. https://usatrade.census.gov/