(+)-1,2-Bis[(2S,5S)-2,5-diethylphospholano]benzene

Also known as: (+)-1,2-Bis((2S,5S)-2,5-diethylphospholano)benzene, (2S,2'S,5S,5'S)-2,2',5,5'-Tetraethyl-1,1'-(1,2-phenylene)diphospholane, (2S,2'S,5S,5'S)-2,2',5,5'-Tetraethyl-1,1'-(o-phenylene)diphospholane, (2S,5S)-1-[2-[(2S,5S)-2,5-diethylphospholan-1-yl]phenyl]-2,5-diethylphospholane, (S,S)-Et-DUPHOS, (S,S)-Ethyl-DUPHOS, 1,2-Bis((2S,5S)-2,5-diethylphospholan-1-yl)benzene, MFCD00142321, UNII-FRI8026KMA

(+)-1,2-Bis[(2S,5S)-2,5-diethylphospholano]benzene (CAS 136779-28-7) 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 1.010 g/mL at 25ºC and a flash point of >110.0 °C. It is classified under GHS with signal word Warning and hazard statements H315 — Causes skin irritation, H319 — Causes serious eye irritation and H335 — May cause respiratory irritation. No supplier offers are currently listed; request a quote. Record last updated Nov 3, 2026.

CAS No.: 136779-28-7
Jingsj CID: J-8915-6
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	1.010 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	n20/D 1.581

GHS Safety & Compliance

IrritantSignal word: Warning

H315 — Causes skin irritation
H319 — Causes serious eye irritation
H335 — May cause respiratory irritation

Frequently Asked Questions

What is the CAS number of (+)-1,2-Bis[(2S,5S)-2,5-diethylphospholano]benzene?

The CAS number of (+)-1,2-Bis[(2S,5S)-2,5-diethylphospholano]benzene is 136779-28-7.

What are the molecular formula and molecular weight of (+)-1,2-Bis[(2S,5S)-2,5-diethylphospholano]benzene?

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

Is (+)-1,2-Bis[(2S,5S)-2,5-diethylphospholano]benzene hazardous?

(+)-1,2-Bis[(2S,5S)-2,5-diethylphospholano]benzene has GHS signal word Warning and hazard statements H315 — Causes skin irritation; H319 — Causes serious eye irritation; H335 — May cause respiratory irritation.

What are the upstream and downstream products of (+)-1,2-Bis[(2S,5S)-2,5-diethylphospholano]benzene?

For (+)-1,2-Bis[(2S,5S)-2,5-diethylphospholano]benzene, Upstream Products: (3R,6R)-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[(2S,5S)-2,5-diethylphospholano]benzene (CAS 136779-28-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-8915-6 (accessed 2026-11-09).

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