Product Details
Products Description of Diphenyl Ether CAS#101-84-8
Diphenyl Ether (CAS#101-84-8) is a colorless material, either a crystalline solid or clear liquid, with a light, nice fragrance. It melts at about 81 °F (27.2 °C), becoming a see-through liquid once warmer than this temperature. It has a noticeable floral-green, metallic, geranium-like smell and does not dissolve in water.
Thanks to its strong thermal stability and low vapor pressure, it’s often used as a heat-transfer agent. It’s also valuable in the fragrance industry, especially in soap making, where it helps hold and carry scents. Plus, it’s a common chemical intermediate for synthesis, supporting processes like halogenation, acylation, and alkylation that are important for making many organic and industrial products.
Safety and Handling:
· Safety Note: Diphenyl Ether may cause irritation via contact/inhalation → use carefully
· PPE Recommendation: Wear gloves, goggles, and appropriate respiratory protection
· Storage: Keep in dry, well-ventilated area; avoid heat sources and direct sunlight (prevents decomposition/volatilization)
· Disposal: Follow proper practices and local environmental regulations to reduce environmental risks
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 |
