Bis(3,5-dimethylphenyl)chlorophosphine

Also known as: Bis(3,5-dimethylphenyl)chlorophosphine, tech., Bis(3,5-dimethylphenyl)chlorophosphine, 98%, Bis(3,5-dimethylphenyl)phosphine chloride, Bis(3,5-dimethylphenyl)phosphinous chloride, Chlorobis(3,5-dimethylphenyl)phosphine, Chlorobis(3,5-dimethylphenyl)phosphine, tech. 90%, MFCD01630841, chloro-bis(3,5-dimethylphenyl)phosphane

Bis(3,5-dimethylphenyl)chlorophosphine (CAS 74289-57-9) is a compound in the Aromatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C16H18ClP and a molecular weight of 276.74100 g/mol. Key properties include a boiling point of 407.2ºC at 760 mmHg, a density of 1.102 g/mL at 25ºC and a flash point of 110ºC. It is classified under GHS with signal word Danger and hazard statements H314 — Causes severe skin burns and eye damage. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 74289-57-9
Jingsj CID: J-18574-0
Molecular Formula: C₁₆H₁₈ClP
Molecular Weight: 276.74100 g/mol
Category: Aromatic Hydrocarbons
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	407.2ºC at 760 mmHg
Density	1.102 g/mL at 25ºC
Flash Point	110ºC
Exact Mass	276.08300
PSA	13.59000
LogP	4.50670
Refractive Index	n20/D 1.606
Additional Property	Reacts with water.

GHS Safety & Compliance

CorrosionSignal word: Danger

H314 — Causes severe skin burns and eye damage

Frequently Asked Questions

What is the CAS number of Bis(3,5-dimethylphenyl)chlorophosphine?

The CAS number of Bis(3,5-dimethylphenyl)chlorophosphine is 74289-57-9.

What are the molecular formula and molecular weight of Bis(3,5-dimethylphenyl)chlorophosphine?

Bis(3,5-dimethylphenyl)chlorophosphine has molecular formula C16H18ClP and molecular weight 276.74100 g/mol.

Is Bis(3,5-dimethylphenyl)chlorophosphine hazardous?

Bis(3,5-dimethylphenyl)chlorophosphine has GHS signal word Danger and hazard statements H314 — Causes severe skin burns and eye damage.

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

Last updated: 8/21/2026

How to cite: Jingsj. "Bis(3,5-dimethylphenyl)chlorophosphine (CAS 74289-57-9)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-18574-0 (accessed 2026-11-09).

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