3,4,7,8-Tetramethyl-1,10-phenanthroline

Also known as: 1,10-Phenanthroline, 3,4,7,8-tetramethyl-, 3,4,7,8-Me4phen, 3,4,7,8-tetramethyl-phen, 3,4,7,8-tmphen, 3,4,7,8-tetramethylpyridino[3,2-h]quinoline

3,4,7,8-Tetramethyl-1,10-phenanthroline (CAS 1660-93-1) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C16H16N2 and a molecular weight of 236.312 g/mol. Key properties include a melting point of 277-280 °C(lit.), a boiling point of 435.2±40.0 °C at 760 mmHg, a density of 1.1±0.1 g/cm3 and a flash point of 192.6±18.6 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 1660-93-1
Jingsj CID: J-42766-7
Molecular Formula: C₁₆H₁₆N₂
Molecular Weight: 236.312 g/mol
Category: Organic Compounds
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	277-280 °C(lit.)
Boiling Point	435.2±40.0 °C at 760 mmHg
Density	1.1±0.1 g/cm3
Flash Point	192.6±18.6 °C
Exact Mass	236.131348
PSA	25.78000
LogP	3.62
Vapor Pressure	0.0±1.0 mmHg at 25°C
Refractive Index	1.662

Frequently Asked Questions

What is the CAS number of 3,4,7,8-Tetramethyl-1,10-phenanthroline?

The CAS number of 3,4,7,8-Tetramethyl-1,10-phenanthroline is 1660-93-1.

What are the molecular formula and molecular weight of 3,4,7,8-Tetramethyl-1,10-phenanthroline?

3,4,7,8-Tetramethyl-1,10-phenanthroline has molecular formula C16H16N2 and molecular weight 236.312 g/mol.

What are the upstream and downstream products of 3,4,7,8-Tetramethyl-1,10-phenanthroline?

For 3,4,7,8-Tetramethyl-1,10-phenanthroline, Upstream Products: 4-Hydroxy-3-methyl-2-butanone, o-Phenylenediamine, 2-Nitroaniline.

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. "3,4,7,8-Tetramethyl-1,10-phenanthroline (CAS 1660-93-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-42766-7 (accessed 2026-11-09).

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