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Diethyl Phthalate (DEP) is an organic compound that belongs to the phthalate ester family. It is a colorless and odorless liquid commonly used as a plasticizer in various industries, including the production of plastics, rubber, and personal care products. DEP is derived from the esterification of phthalic anhydride with ethanol.
DEP is valued for its ability to increase the flexibility and durability of materials, making it a popular choice as a plasticizer. It improves the workability and processing characteristics of polymers, allowing them to be easily molded and shaped. Additionally, DEP has low volatility and good stability, enhancing the performance and longevity of the products it is used in.
| Property | Specification |
|---|---|
| CAS Number | 84-66-2 |
| Molecular Formula | C12H14O4 |
| 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) | 1.499-1.501 |
| Specific Gravity (at 25°C) | 1.115-1.119 |
| Boiling Point | 298-300°C |
| Flash Point (Closed Cup) | 160°C |
| Solubility | Miscible with most organic solvents |