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Dioctyl Phthalate (DOP) is an organic compound that belongs to the phthalate ester family. It is a clear, colorless liquid commonly used as a plasticizer in various industries, including the production of plastics, rubber, and textiles. DOP is derived from the esterification of phthalic anhydride with 2-ethylhexanol.
DOP is valued for its excellent plasticizing properties, making it an essential additive in the manufacturing of flexible PVC products. It improves the flexibility, elongation, and workability of polymers, allowing them to be easily processed and molded. Additionally, DOP provides good stability and durability to the materials it is used in.
| Property | Specification |
|---|---|
| CAS Number | 117-81-7 |
| Molecular Formula | C24H38O4 |
| Appearance | Clear, colorless liquid |
| Purity | ≥ 99% |
| Acid Value | ≤ 0.1 mg KOH/g |
| Moisture Content | ≤ 0.1% |
| Color (Hazen Units) | ≤ 30 |
| Refractive Index (at 25°C) | 1.485-1.488 |
| Specific Gravity (at 25°C) | 0.983-0.987 |
| Boiling Point | 370-380°C |
| Flash Point (Closed Cup) | 195°C |
| Solubility | Insoluble in water, soluble in organic solvents |