Diphenyl phosphite

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

Molecular structure of 4712-55-4
US ProductionCBI
Import Value$23M
Top SourceSingapore 52%

The EPA did not publish how much of this chemical companies made or imported, or marked that amount confidential. Without that volume, ACID cannot calculate import dependency.

Where It Comes From

Customs basis: HS 292029 · basket

These shares come from HS customs code 292029, which covers 17 chemicals in total. They estimate the bucket's origin mix, not this chemical specifically.

Source Countries
SG 52%SingaporeTW 12%TaiwanIT 9%ItalyGB 7%United KingdomES 7%Spain
EPA-registered manufacturers (2)
Icc Industries
Si Group Usa (Usaa)

Why It Matters

Sectors
Plastics & Rubber
Downstream UsesNo data available
FDA Shortage Status
No FDA shortage records

Industrial Uses

Used in 2 sectors as 3 functional roles.

  • Stabilizing agent in Plastics Material and Resin Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product
  • UV stabilizer in Plastics Material and Resin Manufacturing (90%)Processing—incorporation into formulation, mixture, or reaction product
  • Antioxidant in Plastics Material and Resin Manufacturing (90%)Processing—incorporation into formulation, mixture, or reaction product
  • UV stabilizer in Synthetic Rubber Manufacturing (10%)Processing—incorporation into formulation, mixture, or reaction product
  • Antioxidant in Synthetic Rubber Manufacturing (10%)Processing—incorporation into formulation, mixture, or reaction product

Vendor Pricing

$0.04/gAngene Chemical
CountryChina (registered: Hong Kong)
Pack$19.00 / 500 g
Purity80%
Vendors13 available

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

12 more vendors
VendorCountry$/gPackPurity
A2B Chem LLCUnited States$0.053 kg80%
AA BLOCKSUnited States$0.063 kg80%
ChemsceneUnited States$0.101 kg
Fluorochem UKUnited Kingdom$0.121 kg80%
Fluorochem EUGermany$0.15100 g80%
Sigma-Aldrich (Rush Stock)Germany$0.22500 g
Sigma-AldrichGermany$0.22500 g
Combi-Blocks, Inc.United States$0.251 kg85%
Ambeed, Inc.United States$0.50100 g75%
Angene International LimitedUnited States$0.83100 g75%
AstaTech, IncUnited States$0.99100 g95%
AngeneChina Hong Kong$4266.6730 mg80%

Chemical Identity

CAS4712-55-4
PubChem CID62550
DTXSIDDTXSID7041889
FormulaC12H11O3P
Mol. Weight234.19 g/mol
SMILESC1=CC=C(C=C1)OP(=O)OC2=CC=CC=C2

Data Sources

DTXSID70418892026-04-06

https://doi.org/10.23645/epacomptox.5588566

Archive: data/sources/comptox/dsstox_identifiers.csv

625502026-04-06

https://pubchem.ncbi.nlm.nih.gov/rest/pug/compound/cid/62550/property/MolecularFormula,MolecularWeight,CanonicalSMILES,InChIKey/JSON

Archive: data/sources/pubchem_properties/62550.json

4712-55-42026-04-24

https://www.epa.gov/chemical-data-reporting

Archive: data/sources/epa_cdr/2020_cdr.csv

CAS 4712-55-42026-04-25

https://www.epa.gov/chemical-data-reporting

Archive: data/sources/epa_cdr/2020_cdr_industrial.csv