Cresyl diphenyl phosphate
CAS 26444-49-5
EC 247-693-8
Formula C19H17O4P
MW 340.31 g/mol
Flame Retardants Plastics & PolymersElectronicsBuilding & ConstructionAerospace & DefenseAutomotiveLubricants & Metalworking Plasticizer & SoftenerFlame RetardancyLubrication
Description
Cresyl Diphenyl Phosphate (CDP), also known as Diphenyl Cresyl Phosphate or Diphenyl Tolyl Phosphate, is an organophosphate ester supplied under CAS 26444-49-5. It carries no assigned E-code and is identified under EC number 247-693-8 with the molecular formula C19H17O4P.
In PVC and engineering polymer formulations, CDP functions simultaneously as a plasticizer and flame retardant by releasing phosphoric acid fragments during combustion, which disrupts the flame propagation cycle. In hydraulic fluids and lubricant blends, it reduces friction between metal surfaces while providing fire-resistance properties critical for aerospace and industrial machinery applications.
CDP is available as a technical-grade liquid and is subject to REACH registration requirements for EU supply. Procurement quantities are typically offered in drums and intermediate bulk containers. Buyers should confirm supplier REACH compliance documentation and applicable SDS before import or formulation use.
In PVC and engineering polymer formulations, CDP functions simultaneously as a plasticizer and flame retardant by releasing phosphoric acid fragments during combustion, which disrupts the flame propagation cycle. In hydraulic fluids and lubricant blends, it reduces friction between metal surfaces while providing fire-resistance properties critical for aerospace and industrial machinery applications.
CDP is available as a technical-grade liquid and is subject to REACH registration requirements for EU supply. Procurement quantities are typically offered in drums and intermediate bulk containers. Buyers should confirm supplier REACH compliance documentation and applicable SDS before import or formulation use.
Physical Properties
| Melting Point | -38°C |
| Boiling Point | 390 °C @ Press: 760 Torr |
| Density | 1.208 g/cm³ @ Temp: 25 °C |
| Flash Point | 232°C |
| Appearance | Colorless, transparent liquid; very slight odor.Insoluble in water; soluble in most organic solvents except glycerol. Combustible. |
| Color | Pale yellow |
| Form | Liquid |
| Refractive Index | 1.5630 |
| Log P | 4.510 |
Safety & Handling (Learn More)
Danger GHS07 GHS09 GHS08
H
H302H319H361H370H373H400H410H411H412
P
P203P260P264P270P273P280P318P319P321P330P391P405P501P264+P265P301+P317P308+P316P337+P317P305+P351+P338
Trade & Regulatory
| HS Code | 29199000 |
| WGK (Germany) | 2 |
Other Names
(2-methylphenyl) diphenyl phosphateCDPDIPHENYL TOLYL PHOSPHATECresol diphenyl phosphateDiphenyl cresol phosphateDIPHENYL CRESYL PHOSPHATE
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