Products Description of Diphenyl Ether CAS#101-84-8
Diphenyl Ether (CAS#101-84-8) is a colorless substance that exists as a crystalline solid or a clear liquid with a mild, pleasant aroma. It has a melting point of approximately 81 °F (27.2 °C) and turns into a transparent liquid above this temperature. The compound presents a distinct floral-green, metallic, geranium-like scent and is insoluble in water.
Owing to its excellent thermal stability and low vapor pressure, it is commonly used as a heat-transfer medium. It also has significant applications in the fragrance industry, particularly in soap formulations, where it helps carry and retain fragrance components. Moreover, diphenyl ether is widely employed as a chemical synthesis intermediate, participating in various reactions including halogenation, acylation, and alkylation, which play an important role in the manufacture of diverse organic compounds and industrial materials.
Diphenyl ether Chemical Properties
| Name | Diphenyl Ether |
| CAS No | 101-84-8 |
| Physical Form | Colorless crystalline solid or liquid |
| Melting Point | About 81 °F (27.2 °C) |
| Odor | Mild, pleasant, floral-green with metallic geranium notes |
| Solubility | Not soluble in water |
| Uses | Heat-transfer agent, fragrance and soap additive, and intermediate for organic reaction processes |
| Melting point | 26 °C |
| Boiling point | 259 °C(lit.) |
| Density | 1.073 g/mL at 25 °C(lit.) |
| Vapor density | >5.86 (25 °C, vs air) |
| Vapor pressure | <1 mm Hg ( 20 °C) |
| Refractive index | n20/D 1.579(lit.) |
| FEMA | 3667 | DIPHENYL ETHER |
| Fp | >230 °F |
| Storage temp | Store below +30°C. |
| Solubility | alcohol: soluble(lit.) |
| Form | Colorless liquid |
| Color | White or Colorless to Almost white or Almost colorless |
| Specific Gravity | 1.073 |
| Relative polarity | 2.8 |
| Odor | Weak geranium. |
| Odor Threshold | 0.1ppm |
| Odor Type | green |
| Explosive limit | 0.8-1.5%(V) |
| Water Solubility | insoluble |
| FreezingPoint | 27℃ |
| Merck | 147,288 |
| JECFA Number | 1255 |
| BRN | 1364620 |
| Henry's Law Constant | 2.13 at 20 °C (approximate - calculated from water solubility and vapor pressure) |
| Exposure limits | NIOSH REL: TWA 1 ppm (7 mg/m3), IDLH 100 ppm; OSHA PEL: TWA 1 ppm; ACGIH TLV: TWA 0.1, STEL 2 ppm (adopted). |
| Dielectric constant | 3.7（30℃） |
| InChIKey | USIUVYZYUHIAEV-UHFFFAOYSA-N |
| LogP | 4.21 at 25℃ |
| CAS DataBase Reference | 101-84-8(CAS DataBase Reference) |
| NIST Chemistry Reference | Diphenyl ether(101-84-8) |
| EPA Substance Registry System | Phenyl ether (101-84-8) |
Safety Information
| Hazard Codes | N,Xi,T |
| Risk Statements | 51/53-36/37/38-39/23/24/25-23/24/25-36/38-36 |
| Safety Statements | 60-61-57-37/39-26-45-36/37 |
| RIDADR | UN 3077 9/PG 3 |
| OEB | B |
| OEL | TWA: 1 ppm (7 mg/m3) |
| WGK Germany | 2 |
| RTECS | KN8970000 |
| Autoignition Temperature | 610 °C |
| TSCA | Yes |
| HS Code | 2909 30 10 |
| HazardClass | 9 |
| PackingGroup | III |
| Hazardous Substances Data | 101-84-8(Hazardous Substances Data) |
| Toxicity | LD50 orally in Rabbit: 2450 mg/kg LD50 dermal Rabbit > 7940 mg/kg |
| IDLA | 100 ppm |
