Description and features
Rostabil DDPP (Diisodecyl phenyl phosphite) is a clear liquid which has C26H47O3P as chemical formula. This alkyl-aryl phosphite serves as a color and processing stabilizer in ABS, polycarbonate, polyurethane, coatings, and PET fiber, particularly where regulatory approval for food contact is not required. Additionally, it acts as a secondary stabilizer to enhance color and heat stability in PVC.
People also know diisodecyl phenyl phosphite as phosphorous acid diisodecyl phenyl ester and phenyl diisodecyl phosphite.
Availability
Europe: Provided Rostabil DDPP is in stock in our local warehouses our lead time is about one week if delivered in 200 KG drums.
We can also serve Canada, South America, South Africa, and other markets. Please contact our sales department for more details.
This substance (CAS: 25550-98-5) has been registered (FULL) under REACH (EC) 1907/2006.
Product Identification
| CAS number | 25550-98-5 |
| EC number | 247-098-3 |
| HS code | 2920 90 85 |
| EC name | Diisodecyl phenyl phosphite |
Specification
| Appearance | Clear liquid @ 20 – 25 ºC |
| Acid Value | ≤0.1 (mg KOH/g) |
| Colour | ≤100 |
| Free phenol | ≤1.0 % |
Packaging
Available packaging: 200 KG drums.
Special packaging is available on request.
Storage
Store diisodecyl phenyl phosphite in a cool, dry, and well-ventilated area, ensuring compliance with legal requirements. Additionally, keep DDPP away from heat sources and oxidizing agents to maintain safety.
MSDS
A Material Safety Data Sheet (MSDS) is available for Rostabil DDPP and all other products supplied by Vesta Chemicals BV.
An MSDS outlines the hazards of a product and explains how to handle, use, and store the product safely. Besides it provides important regulatory and emergency response information for the purchased product.
Molecular and structural information
| Molecular formula | C26H47O3P |
| Molecular weight | 438.64 g/mol |
| Smiles notation | P(=O)(Oc1ccccc1)(OCCCCCCCC(C)C)OCCCCCCCC(C)C |
| InChi key | JTNKWPDPEXRFOV-UHFFFAOYSA-N |
| Structural formula |  |
Physicochemical information
| Boiling point | 478.99 °C |
| Flash point | 296.30 °C |
| Melting point | 90.17 °C |
| Partition coefficient (log Pow) | 9.32 @ 25 °C |
| Relative density | 0.94 – 0.96 @ 20 g/ml |
| Refractive index | 1.4800 – 1.4860 @ 20 ºC |
| Solubility in water | 0.182 mg/l |
| Specific gravity | 0.930 – 0.950g/m3 (25 ºC/15 ºC) |
| Vapour pressure | 0.0076 Pa @ 25 °C |