Triphenylphosphine
Catalysis Application: It serves as a critical component in transition-metal-catalyzed reactions and is extensively employed across both petrochemical and fine chemical synthesis.
Solubility: The compound exhibits high solubility in a range of organic solvents—including ether, benzene, chloroform, and acetic acid—enabling broad utility in various formulations.
Thermal Stability: With a boiling point above 360 °C, it demonstrates exceptional thermal resilience, maintaining structural integrity even under severe high-temperature conditions.
Crystalline Form: It is typically supplied as a white to off-white crystalline powder, a physical state that supports convenient handling, accurate dosing, and stable long-term storage.
Triphenylphosphine (C₁₈H₁₅P, MW 262.30) is a white to off-white crystalline powder. It demonstrates good solubility in ether, benzene, chloroform, and glacial acetic acid, limited solubility in ethanol, and is nearly insoluble in water. The compound melts between 78.5–81.5 °C and boils above 360 °C when measured under an inert atmosphere.
Acting as an essential ligand in homogeneous catalysis, triphenylphosphine facilitates numerous transition-metal-catalyzed reactions and is widely applied across both petrochemical and fine chemical industries. Ongoing scientific investigation and expanding industrial use continue to broaden its functional scope, driving a consistent year-on-year increase in global market demand.
Parameters
Melting point | 79-81 °C(lit.) |
Boiling point | 377 °C(lit.) |
bulk density | 500-600kg/m3 |
density | 1.132 |
vapor density | 9 (vs air) |
vapor pressure | 5 mm Hg ( 20 °C) |
refractive index | 1.6358 |
Fp | 181 °C |
storage temp. | Store below +30°C. |
solubility | water: soluble0.00017 g/L at 22°C |
form | Crystals, Crystalline Powder or Flakes |
color | White |
Specific Gravity | 1.132 |
Odor | odorless |
Water Solubility | Insoluble |
Hydrolytic Sensitivity | 8: reacts rapidly with moisture, water, protic solvents |
Merck | 14,9743 |
BRN | 610776 |
Stability: | Stable. Incompatible with oxidizing agents, acids. |
InChIKey | RIOQSEWOXXDEQQ-UHFFFAOYSA-N |
CAS DataBase Reference | 603-35-0(CAS DataBase Reference) |
NIST Chemistry Reference | Phosphine, triphenyl-(603-35-0) |
EPA Substance Registry System | Triphenylphosphine (603-35-0) |
Safety Information
Hazard Codes | Xn,N |
Risk Statements | 22-43-53-50/53-48/20/22 |
Safety Statements | 36/37-60-61-36/37/39-26 |
RIDADR | 3077 |
WGK Germany | 2 |
RTECS | SZ3500000 |
F | 9 |
Autoignition Temperature | 425 °C |
TSCA | Yes |
HS Code | 29310095 |
Hazardous Substances Data | 603-35-0(Hazardous Substances Data) |
Toxicity | LD50 orally in Rabbit: 700 mg/kg LD50 dermal Rabbit > 4000 mg/kg |
