Description and features
Rostabil DPDP (isodecyl diphenyl phosphite) is a clear liquid with the chemical formula C22H31O3P. Manufacturers use it as a color and processing stabilizer in polycarbonate, polyurethanes, ABS polymers, and coatings. Additionally, it serves as a secondary stabilizer in PVC.
Isodecyl diphenyl phosphite is also known as diphenyl isodecyl phosphite and phosphorous acid, 8-methylnonyl diphenyl ester.
Shipment Info
Europe: Provided Rostabil DPDP is in stock in our local warehouses our lead time is about one week if delivered in 200 KG steel drums.
We can also serve Canada, South America, South Africa, and other markets. Please contact our sales department for more details.
This substance (CAS: 26544-23-0) has been registered (FULL) under REACH (EC) 1907/2006.
Product Identification
| CAS number | 26544-23-0 |
| EC number | 247-777-4 |
| HS code | 2920 90 85 |
| IUPAC name | 2-methylnonyl diphenyl phosphite |
Specification
| Appearance | Clear liquid |
| Acid Value | ≤0.0 1 mg KOH/g |
| Colour | ≤100 Hazen |
Packaging
Available packaging: 200 KG steel drums.
Special packaging is available on request.
Storage
Store isodecyl diphenyl phosphite in a cool, dry, and well-ventilated area, and ensure that you follow legal requirements. Additionally, keep DPDP away from heat sources and oxidizing agents to maintain safety and stability.
MSDS
A Material Safety Data Sheet (MSDS) is available for Rostabil DPDP 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 | C22H31O3P |
| Molecular weight | 374.45 g/mol |
| InChi key | ADRNSOYXKABLGT-UHFFFAOYSA-N |
| Structural formula |  |
Physicochemical information
| Boiling point | 435.74 °C |
| Density | 1.03 – 1.05 @ 20°C g/cm3 |
| Flash point | 130.0 ºC |
| Melting point | 154.75 °C |
| Partition coefficient (log Pow) | 8.52 |
| Refractive index | 1.521 – 1.527 @ 20°C |
| Solubility in water | Insoluble (< 0.1 mg/l) |
| Specific gravity | 1.020 – 1.036 g/m3 (25 °C/15 °C) |
| Vapour pressure | 2.07E-09 Pa @ 25°C |