P-Phenetidine
Food Additives 2025-03-02
Introduction to P-Phenetidine
P-Phenetidine, also known as 4-ethoxyaniline or p-aminophenetole, is a chemical compound with the CAS number 156-43-4. It has the molecular formula C8H11NO and a molecular weight of 137.18. This compound is primarily utilized as an intermediate in the production of various chemicals for industries such as pharmaceuticals, dyes, food preservatives, feed additives, and rubber antioxidants.
Properties and Applications Table
| Property/Application | Details |
|---|---|
| Chemical Name | P-Phenetidine (4-Ethoxyaniline, p-Aminophenetole) |
| CAS Number | 156-43-4 |
| Molecular Formula | C8H11NO |
| Molecular Weight | 137.18 |
| Physical State | Colorless oily liquid, turns red to brown upon exposure to air or light |
| Density | Approximately 1.065 g/mL at 25°C |
| Melting Point | 2-5°C |
| Boiling Point | 250-254°C |
| Solubility | Practically insoluble in water and inorganic acids, soluble in ethanol, ether, and chloroform |
| pH Value | 8 (1g/l, H2O, 20°C) |
| Refractive Index | n20/D 1.559 |
| Flash Point | 110.3°C or 240°F |
| Uses | Intermediate in pharmaceuticals (e.g., fever reducers, antioxidants), dyes, food preservatives, feed additives, and rubber antioxidants |
| Stability | Stable but sensitive to light and air; flammable; incompatible with strong oxidants |
| Safety Information | Store in a cool, dry, well-ventilated area; keep away from foodstuffs; use appropriate protective equipment |
P-Phenetidine is used to produce rubber antioxidant AW, which is 6-ethoxy-2.2.4-trimethyl-1.2-dihydroquinoline. It also serves as an antioxidant in feed and food to prevent the oxidation of fats and proteins during storage. Additionally, it is used in the preservation of vitamins A and E and in the production of analgesic-antipyretic drugs and antiseptic drugs.
In summary, P-Phenetidine is a versatile chemical with a wide range of applications across multiple industries. Its unique properties make it an essential intermediate in the production of various chemicals and products.
