(-)-1,2-Bis((2R,5R)-2,5-diethylphospholano)benzene

Also known as: (R,R)-Et-DUPHOS, (R,R)-Ethyl-DUPHOS, (-)-1,2-Bis[(2R,5R)-2,5-diethyl-1-phospholanyl]benzene, 1,2-Bis((2R,5R)-2,5-diethylphospholan-1-yl)benzene, (2R,2'R,5R,5'R)-2,2'-5,5'-Tetraethyl-1,1'-(o-phenylene)diphospholane, (2R,5R)-1-[2-[(2R,5R)-2,5-diethylphospholan-1-yl]phenyl]-2,5-diethylphospholane

(-)-1,2-Bis((2R,5R)-2,5-diethylphospholano)benzene (CAS 136705-64-1) is a compound in the Aromatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C22H36P2 and a molecular weight of 362.46900 g/mol. Key properties include a boiling point of 468.5ºC at 760 mmHg, a density of 1.01 g/mL at 25ºC and a flash point of >110.0 °C. GHS hazard statements: H413. No supplier offers are currently listed; request a quote. Record last updated Nov 3, 2026.

CAS No.: 136705-64-1
Jingsj CID: J-17567-7
Molecular Formula: C₂₂H₃₆P₂
Molecular Weight: 362.46900 g/mol
Category: Aromatic Hydrocarbons
Last updated: 11/3/2026

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Physicochemical Properties

Boiling Point	468.5ºC at 760 mmHg
Density	1.01 g/mL at 25ºC
Flash Point	>110.0 °C
Exact Mass	362.22900
PSA	27.18000
LogP	6.60300
Vapor Pressure	1.67E-08mmHg at 25°C
Refractive Index	n 20/D 1.6

GHS Safety & Compliance

H413

Frequently Asked Questions

What is the CAS number of (-)-1,2-Bis((2R,5R)-2,5-diethylphospholano)benzene?

The CAS number of (-)-1,2-Bis((2R,5R)-2,5-diethylphospholano)benzene is 136705-64-1.

What are the molecular formula and molecular weight of (-)-1,2-Bis((2R,5R)-2,5-diethylphospholano)benzene?

(-)-1,2-Bis((2R,5R)-2,5-diethylphospholano)benzene has molecular formula C22H36P2 and molecular weight 362.46900 g/mol.

Is (-)-1,2-Bis((2R,5R)-2,5-diethylphospholano)benzene hazardous?

(-)-1,2-Bis((2R,5R)-2,5-diethylphospholano)benzene has GHS hazard statements H413.

What are the upstream and downstream products of (-)-1,2-Bis((2R,5R)-2,5-diethylphospholano)benzene?

For (-)-1,2-Bis((2R,5R)-2,5-diethylphospholano)benzene, Upstream Products: (3S,6S)-3,6-Octanediol, 1,2-bis(phosphino)benzene.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated: 11/3/2026

How to cite: Jingsj. "(-)-1,2-Bis((2R,5R)-2,5-diethylphospholano)benzene (CAS 136705-64-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-17567-7 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.