Pigment Red 166

颜料红166

Also known as: C.I. Pigment Red 166, C.I. 20730, Cromophtal Scarlet R, 2-Naphthalenecarboxamide, N,N'-1,4-phenylenebis[4-[(2,5-dichlorophenyl)azo]-3-hydroxy-

Pigment Red 166 (CAS 71819-52-8) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C40H24Cl4N6O4 and a molecular weight of 794.48 g/mol. It is also known as C.I. Pigment Red 166, C.I. 20730 and Cromophtal Scarlet R. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 71819-52-8
Jingsj CID: J-1436350-2
Molecular Formula: C₄₀H₂₄Cl₄N₆O₄
Chinese Name: 颜料红166
Molecular Weight: 794.48 g/mol
Category: Organic Compounds
Last updated: 8/21/2026

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Frequently Asked Questions

What is the CAS number of Pigment Red 166?

The CAS number of Pigment Red 166 is 71819-52-8.

What are the molecular formula and molecular weight of Pigment Red 166?

Pigment Red 166 has molecular formula C40H24Cl4N6O4 and molecular weight 794.48 g/mol.

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

Last updated: 8/21/2026

How to cite: Jingsj. "Pigment Red 166 (CAS 71819-52-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1436350-2 (accessed 2026-10-25).

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