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Tris(methylphenyl) phosphate

CAS 1330-78-5

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

Molecular structure of 1330-78-5
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
Domestic parents -- activity not disclosed (2)
Eastman Chemical
Icl Specialty Products North America
EPA-registered importers (5)
Idemitsu Kosan · JP Japan
Safic-Alcan · FR France
Chemspec
Idemitsu Lubricants America
Lanxess

Why It Matters

Sectors
EnergyTransportationConstructionPlastics & RubberConsumer ProductsPaints & CoatingsCore Chemicals
Downstream UsesNot recorded
FDA Shortage Status
No FDA shortage records

Industrial Uses

Used in 9 sectors as 6 functional roles.

  • •Flame retardant in Adhesive Manufacturing (3%)Processing—incorporation into formulation, mixture, or reaction product
  • •Hydraulic fluids in All Other Basic Organic Chemical ManufacturingProcessing—incorporation into formulation, mixture, or reaction product
  • •Demulsifier in Petroleum RefineriesProcessing—incorporation into formulation, mixture, or reaction product
  • •Flame retardant in Plastics Material and Resin Manufacturing (30%)Processing—incorporation into formulation, mixture, or reaction product
  • •Lubricating agent in Petroleum Lubricating Oil and Grease Manufacturing (1%)Processing—incorporation into formulation, mixture, or reaction product
  • •Plasticizer in Paint and Coating Manufacturing (38%)Processing—incorporation into formulation, mixture, or reaction product
  • •Plasticizer in Synthetic Rubber ManufacturingProcessing—incorporation into formulation, mixture, or reaction product
  • •Plasticizer in Rubber Product ManufacturingProcessing—incorporation into formulation, mixture, or reaction product
  • •Heat transferring agent in Transportation Equipment Manufacturing (7%)Use—non-incorporative activities

Chemical Identity

CAS1330-78-5
PubChem CIDNot recorded
DTXSIDDTXSID4021391
FormulaNot recorded
Mol. WeightNot recorded
SMILESNot recorded

Data Sources

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Brief citations

Tris(methylphenyl) phosphate (CAS 1330-78-5) https://chemicalindependence.com/chemical/1330-78-5/ EPA CompTox (DSSTox): DTXSID4021391. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID4021391 EPA Chemical Data Reporting: 1330-78-5. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 1330-78-5. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 291990 for CAS 1330-78-5. Reporting year: 2024. https://usatrade.census.gov/