Basic Blue 3

碱性蓝 3

Also known as: C.I. 51004, CI Basic Blue 3, Phenoxazin-5-ium, 3,7-bis(diethylamino)-, nitrate, 3,7-Bis(diethylamino)phenoxazin-5-ium nitrate, BLUE DE LYON

Basic Blue 3 (CAS 73570-52-2) is a compound in the Organic Bases category listed in the Jingsj chemical database. It has the molecular formula C20H26N4O4 and a molecular weight of 386.44500 g/mol. It is also known as C.I. 51004, CI Basic Blue 3 and Phenoxazin-5-ium, 3,7-bis(diethylamino)-, nitrate. Key property: a melting point of 205ºC (dec.)(lit.). No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
73570-52-2
Jingsj CID
J-1513636-5
Molecular Formula
C20H26N4O4
Chinese Name
碱性蓝 3
Molecular Weight
386.44500 g/mol
Category
Organic Bases
Last updated
8/21/2026

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Physicochemical Properties

Melting Point205ºC (dec.)(lit.)

Frequently Asked Questions

What is the CAS number of Basic Blue 3?

The CAS number of Basic Blue 3 is 73570-52-2.

What are the molecular formula and molecular weight of Basic Blue 3?

Basic Blue 3 has molecular formula C20H26N4O4 and molecular weight 386.44500 g/mol.

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

Last updated:

How to cite: Jingsj. "Basic Blue 3 (CAS 73570-52-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1513636-5 (accessed 2026-10-23).

Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.