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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HCID 74267Generated: October 23, 2026

1,2-Bis(diphenylphosphino)ethane

DIPHOS · BIS(DIPHENYLPHOSPHINO)ETHANE · 1,2-BIS(DIPHENYLPHOSPHINE)ETHANE · 1,2-Bis(diphenylphos · 1,2-Bis(diphenylphosphanyl)ethane · 1,2-Bis(diphenylphosphono)ethane · 1,2-Bis(diphenylphosphino)ethane, Diphos · 98% DPPE

https://huagongshe.com/en/chemical/74267

1,2-Bis(diphenylphosphino)ethane molecular structure

Identifiers & Physical Properties

CAS No.1663-45-2
Molecular formulaC26H24P2
Average molar mass398.4 g/mol
Monoisotopic mass398.13532403 g/mol
SMILESc1ccc(P(CCP(c2ccccc2)c2ccccc2)c2ccccc2)cc1
InChIKeyQFMZQPDHXULLKC-UHFFFAOYSA-N
PubChem CID74267
ChEMBLCHEMBL68683
ChEBICHEBI:30669
EC No.216-769-2
DTXSIDDTXSID2061858

Chemical & Physical Properties

XLogP5.9
Topological polar surface area0
Hydrogen bond donors0
Hydrogen bond acceptors0
Rotatable bonds7
Heavy atoms28
Formal charge0
Complexity336
Chemical classesOther Classes -> Phosphorus Compounds
Physical DescriptionWhite to off-white crystals[Acros Organics MSDS]
Melting point137-142 °C (lit.)
Boiling point514.8±33.0 °C(Predicted)
Storage conditionsInert atmosphere,Room Temperature
SolubilitySoluble in acetone, methanol and alcoholic hydrochloric acid.
Physical stateCrystalline Powder or Crystals
ColorWhite to off-white
SensitivityAir Sensitive
BRN761261
StabilityStable. Combustible. Incompatible with strong oxidizing agents. May be air-sensitive.
InChIInChI=1S/C26H24P2/c1-5-13-23(14-6-1)27(24-15-7-2-8-16-24)21-22-28(25-17-9-3-10-18-25)26-19-11-4-12-20-26/h1-20H,21-22H2
InChIKeyQFMZQPDHXULLKC-UHFFFAOYSA-N
SMILESC1C=CC=CC=1P(CCP(C1=CC=CC=C1)C1=CC=CC=C1)C1=CC=CC=C1
CAS DataBase Reference1663-45-2(CAS DataBase Reference)
FDA UNIIKL33QE52I4
NIST Chemistry ReferencePhosphine, 1,2-ethanediylbis[diphenyl-(1663-45-2)
EPA Substance Registry SystemPhosphine, 1,2-ethanediylbis[diphenyl- (1663-45-2)
UNSPSC Code12352002
NACRESNA.22
GHS pictogramGHS07
Signal wordWarning
GHS hazard statementsH335
GHS precautionary statementsP261-P271-P304+P340+P312-P403+P233-P405-P501
Target organsRespiratory system
Personal protective equipment (PPE)Eyeshields, Gloves, type N95 (US)
Hazard symbolsXi
Risk statements (R)36/37/38
Safety statements (S)22-24/25-37/39-26-36
Water hazard class (WGK)3
F9
TSCA inventory statusTSCA listed
Customs code29310095
Storage class11 - Combustible Solids
Hazard classSTOT SE 3

Safety & Regulations

GHS classificationWarningH315 (84.6%): Causes skin irritation [Warning Skin corrosion/irritation]P261, P264, P264+P265, P271, P273, P280, P302+P352, P304+P340, P305+P351+P338, P319, P321, P332+P317, P337+P317, P362+P364, P391, P403+P233, P405, and P501 (click each P-code to see the statement)Aggregated GHS information provided per 13 reports by companies from 10 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.
Regulatory informationChemical: Phosphine, 1,2-ethanediylbis[diphenyl-PMN - indicates a commenced PMN (Pre-Manufacture Notices) substance.
Hazards summaryAn irritant[Acros Organics MSDS] See Triphenylphosphine.
Hazard Classes and CategoriesSkin Irrit. 2 (84.6%)
F9
Personal protective equipment (PPE)Eyeshields, Gloves, type N95 (US)
Water hazard class (WGK)3
TSCA inventory statusTSCA listed
Customs code29310095
Risk statements (R)36/37/38
Signal wordWarning
GHS pictogramGHS07
Hazard symbolsXi
Safety statements (S)22-24/25-37/39-26-36
Storage class11 - Combustible Solids
Target organsRespiratory system
GHS hazard statementsH335
Hazard classSTOT SE 3
GHS precautionary statementsP261-P271-P304+P340+P312-P403+P233-P405-P501

Applications & Uses

Uses

suzuki reaction

Uses

1,2-Bis(diphenylphosphino)ethane is a bidendate ligand used in coordination chemistry to prepare metal complexes. It is involved in the metal-catalyzed allylic alkylation and decarboxylation of allylic esters. It is also used in 1,3-diene synthesis. Further, it is used in cycloaddition reactions and carbonylation reactions. In addition to this, it is used to prepare bis(dicyclohexylphosphino)ethane by hydrogenation.