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Triphenylphosphine CAS#603-35-0

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  • Triphenylphosphine CAS#603-35-0
  • Triphenylphosphine CAS#603-35-0
  • Triphenylphosphine CAS#603-35-0
  • Triphenylphosphine CAS#603-35-0
  • Triphenylphosphine CAS#603-35-0

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Triphenylphosphine CAS#603-35-0

High Solubility in Organic Solvents‌：Easily soluble in ether, soluble in benzene, chloroform, and glacial acetic acid, facilitating its application in diverse chemical processes.


‌Stable Physical Properties‌：Exhibits a high boiling point (>360°C under inert gas) and a defined melting range (78.5–81.5°C), ensuring robustness under high-temperature conditions.


‌Versatile Ligand Role in Catalysis‌：Serves as a critical ligand for homogeneous catalysts, widely utilized in petrochemical and fine chemical production, driving efficiency in reactions.


‌Growing Demand and Emerging Applications‌：Shows increasing annual demand due to continuous development of new uses, highlighting its expanding relevance in industrial chemistry.

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Product Description

Product Description of Triphenylphosphine CAS#603-35-0

Triphenylphosphine has a molecular formula of C18H15P and a molecular weight of 262.30. It is a white to off-white crystalline powder, freely soluble in ether, soluble in benzene, chloroform and glacial acetic acid, slightly soluble in ethanol, and practically insoluble in water. Its melting point is 78.5–81.5 °C, and boiling point exceeds 360 °C under an inert atmosphere. As a key ligand for homogeneous catalysts, it is widely used in petrochemical and fine chemical industries with growing application scope and market demand.


Product Application of Triphenylphosphine CAS#603-35-0

Triphenylphosphine can be sulfonated with oleum to synthesize its trisulfonic acid derivative. It is widely used in Wittig reactions and serves as a standard ligand in homogeneous catalytic systems.

It is also applied to prepare organophosphorus intermediates, such as trimethyl phosphite through transesterification, which can be further processed into organophosphorus pesticides including dichlorvos, monocrotophos and phosphamidon.


Product Information

Parameters


Melting point79-81 °C(lit.)
Boiling point377 °C(lit.)
bulk density500-600kg/m3
density1.132
vapor density9 (vs air)
vapor pressure5 mm Hg ( 20 °C)
refractive index1.6358
Fp181 °C
storage temp.Store below +30°C.
solubilitywater: soluble0.00017 g/L at 22°C
formCrystals, Crystalline Powder or Flakes
colorWhite
Specific Gravity1.132
Odorodorless
Water SolubilityInsoluble
Hydrolytic Sensitivity8: reacts rapidly with moisture, water, protic solvents
Merck149,743
BRN610776
Stability:Stable. Incompatible with oxidizing agents, acids.
InChIKeyRIOQSEWOXXDEQQ-UHFFFAOYSA-N
CAS DataBase Reference603-35-0(CAS DataBase Reference)
NIST Chemistry ReferencePhosphine, triphenyl-(603-35-0)
EPA Substance Registry SystemTriphenylphosphine (603-35-0)


Safety Information


Hazard CodesXn,N
Risk Statements22-43-53-50/53-48/20/22
Safety Statements36/37-60-61-36/37/39-26
RIDADR3077
WGK Germany2
RTECSSZ3500000
F9
Autoignition Temperature425 °C
TSCAYes
HS Code29310095
Hazardous Substances Data603-35-0(Hazardous Substances Data)
ToxicityLD50 orally in Rabbit: 700 mg/kg LD50 dermal Rabbit > 4000 mg/kg


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