Product Description
Diphenyl Ether (CAS 101-84-8), also known as Phenyl Ether, is a versatile aromatic ether compound. It appears as colorless crystalline solid at low temperature and turns into clear transparent liquid above 27.2°C. This material carries a mild, pleasant floral-green geranium-like aroma with subtle metallic notes. It is insoluble in water while soluble in alcohol.
Diphenyl Ether is well recognized for outstanding thermal stability and low vapor pressure, making it a preferred heat transfer medium for high-temperature systems. It works as an excellent fragrance carrier to lock scent ingredients, widely adopted in perfume and scented soap formulations. Besides fragrance applications, it serves as a valuable organic chemical intermediate, capable of taking part in halogenation, acylation, alkylation and other organic synthesis reactions for manufacturing various organic chemicals and industrial materials.
Core Chemical Properties
Diphenyl Ether (CAS 101-84-8) is a stable aromatic ether with complete physical and chemical parameters for industrial, thermal fluid and flavor formulation use.
| Item | Specification Data |
| Chemical Name | Diphenyl Ether / Phenyl Ether |
| CAS Number | 101-84-8 |
| Appearance | Colorless crystalline solid or clear liquid |
| Odor | Mild floral-green geranium scent |
| Melting Point | 27.2°C (81 °F) |
| Boiling Point | 259°C (lit.) |
| Density | 1.073 g/mL at 25°C (lit.) |
| Vapor Pressure | <1 mm Hg (20°C) |
| Vapor Density | >5.86 (25°C, vs air) |
| Refractive Index | n20/D 1.579 (lit.) |
| FEMA Number | 3667 |
| Flash Point | >230 °F |
| LogP | 4.21 at 25℃ |
| Solubility | Insoluble in water, soluble in alcohol |
| Storage Condition | Store below +30°C |
| HS Code | 2909 30 10 |
Chemically, diphenyl ether features strong resistance to thermal degradation at high working temperature. It has low volatility and stable molecular structure, suitable for long-cycle operation in closed heat transfer loops. It also shows good compatibility with many perfume components and organic reaction substrates.
Product Applications
Diphenyl Ether is a multi-purpose raw material famous for thermal stability, fragrance retention and synthetic reactivity.
3.1 Heat Transfer Medium
Used as industrial heat transfer fluid. Low vapor pressure minimizes evaporation loss under high temperature, ensuring stable, safe continuous operation and resisting thermal decomposition.
3.2 Fragrance & Daily Chemical Industry
Applied in perfumes, scented soap and other aroma formulations. It acts as a fragrance carrier to retain and enhance floral notes, stabilizing the scent profile of finished consumer products.
3.3 Organic Synthesis Intermediate
Widely used for organic synthesis. It can undergo halogenation, acylation, alkylation reactions to produce various fine chemicals, aromatic derivatives and functional industrial materials.
