Overview
2-Ethylhexyl diphenyl phosphate (CAS 1241-94-7 ), commercially known as Santicizer 141, Phosflex 362, Disflamoll, or by the abbreviation EHDPP, is an organophosphate ester used across polymer and coating systems.
It functions as a combined plasticizer and flame retardant, reducing flammability while improving flexibility and processability in a single additive. This simplifies formulation and reduces the overall component count.
In vinyl and cellulosic polymer compounds, EHDPP functions as a primary or secondary plasticizer, delivering flame retardancy without requiring a separate halogenated additive for the mixture.
Coating formulators use it in fire-retardant architectural and industrial coatings where both flexibility and reduced combustibility are specification requirements for the final application.
Adhesive and sealant manufacturers incorporate it to lower viscosity during processing while meeting flammability standards in construction and transportation end markets globally.
In lubricant and metalworking fluid formulations, it contributes anti-wear performance and thermal stability under high-load conditions, enhancing the durability of the mechanical systems.
EHDPP is supplied as a clear liquid at ambient temperature, suitable for direct blending into polymer melts, solvent-based coatings, and various industrial fluid systems.
It is available in technical grade, which is the standard specification for industrial and polymer applications. Bulk liquid supply in drums and ISO containers is the typical commercial format.
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Physical Properties
| Melting Point | -30 °C |
| Boiling Point | 375 °C |
| Density | 1.090 g/cm³ @ Temp: 25 °C |
| Flash Point | 224 °C |
| Color | Colourless |
| Form | neat |
| Water Solubility | Insoluble |
| Vapor Pressure | 26.7Pa at 150℃ |
| Refractive Index | 1.5080 to 1.5110 |
| Log P | 5.87 at 25℃ |
Safety & Handling
Danger GHS06 GHS09 GHS08 Hazard Statements H331 Toxic if inhaled H373 May causes damage to organs through prolonged or repeated exposure H400 Very toxic to aquatic life H410 Very toxic to aquatic life with long lasting effects H411 Toxic to aquatic life with long lasting effects Precautionary Statements P260 Do not breathe dust/fume/gas/mist/vapours/spray. P261 Avoid breathing dust/fume/gas/mist/vapours/spray. P271 Use only outdoors or in a well-ventilated area. P273 Avoid release to the environment. P316 Get emergency medical help immediately. P319 Get medical advice/attention if you feel unwell. P321 Specific treatment (see … on this label). P391 Collect spillage. P405 Store locked up. P501 Dispose of contents/container in accordance with local regulations. P304+P340 IF INHALED: Remove person to fresh air and keep comfortable for breathing. P403+P233 Store in a well-ventilated place. Keep container tightly closed.
Trade & Regulatory
| HS Code | 29199000 |
| UN Number | 3082 |
| WGK (Germany) | 2 |
Other Names
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Chemical Properties
- CAS Number
- 1241-94-7
- EC Number
- 214-987-2
- Mol. Weight
- 362.4
- HS Code
- 29199000
- Category
- Oils, Fats & Waxes