Acid Red 88

酸性红88

Also known as: Acid Red A, C.I. Acid Red 88, C.I. 15620, sodium 4-[(2-hydroxynaphthalen-1-yl)diazenyl]naphthalene-1-sulfonate, 4-(2-Hydroxy-1-naphthylazo)-1-naphthalenesulfonic acid sodium salt, Fast Red ALS, Roccellin, Naphthalene Red

Acid Red 88 (CAS 1658-56-6) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C20H13N2NaO4S and a molecular weight of 400.38300 g/mol. It is also known as Acid Red A, C.I. Acid Red 88 and C.I. 15620. Key property: a melting point of 280ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
1658-56-6
Jingsj CID
J-1450805-3
Molecular Formula
C20H13N2NaO4S
Chinese Name
酸性红88
Molecular Weight
400.38300 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Melting Point280ºC

Frequently Asked Questions

What is the CAS number of Acid Red 88?

The CAS number of Acid Red 88 is 1658-56-6.

What are the molecular formula and molecular weight of Acid Red 88?

Acid Red 88 has molecular formula C20H13N2NaO4S and molecular weight 400.38300 g/mol.

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

Last updated:

How to cite: Jingsj. "Acid Red 88 (CAS 1658-56-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1450805-3 (accessed 2026-10-25).

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