
D Alpha Tocopherol (chemical formula C₂₉H₅₀O₂, molecular weight 430.71) is a fat-soluble vitamin and an aromatic compound with a phytol ring linked to a side chain. At room temperature, it appears as a viscous, oily liquid ranging in color from pale greenish-yellow to pale yellow. It is insoluble in water, easily soluble in organic solvents, and possesses strong antioxidant properties and good thermal stability. It is an essential nutrient for the human body and is widely used in the food, pharmaceutical, cosmetic, and feed industries.
| Item | Specification |
| Melting point | 2.5–3.5°C |
| Boiling Point | 200–220°C (0.1 mmHg) |
| Density | 0.947–0.955 g/cm³ (25°C) |
| Flash point | 253°C |
| Vapor pressure | Extremely low (<0.001 mmHg at 25°C) |
| Refractive index | 1.505–1.507 (20°C) |
| Water Solubility | Practically insoluble in water (<0.01 g/100 mL) |
| Specific Rotation | 24° (c=2, in isooctane at 25°C) |
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