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Acid Red 1

Also known as: Azophloxine, Food Red 10, Amidonaphthol Red, Pontacyl Carmine, C.I. Acid Red 1, C.I. 18050, Disodium 5-acetamido-4-hydroxy-3-[(E)-phenyldiazenyl]naphthalene-2,7-disulfonate, Amido Naphthol Red G, Acid Naphthol Red G, Acid Red 5B, Acid Rose 2G

Acid Red 1 (CAS 3734-67-6) is a compound in the Nitrogen Compounds category listed in the Jingsj chemical database. It has the molecular formula C18H13N3Na2O8S2 and a molecular weight of 509.421 g/mol. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
3734-67-6
Jingsj CID
J-1098905-2
Molecular Formula
C18H13N3Na2O8S2
Molecular Weight
509.421 g/mol
Category
Nitrogen Compounds
Last updated
8/21/2026

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Physicochemical Properties

Exact Mass508.993958
PSA205.21000
LogP4.96200

Activity & Biological Data

Additional Information[1]. Sharifi S, et al. Photophysical and Nonlinear Optical Properties of Azophloxine in Reverse Micelles. J Fluoresc. 2018;28(6):1439-1450.

Customs & Trade Information

HS Code2927000090
Summary2927000090 other diazo-, azo- or azoxy-compounds。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。MFN tariff:6.5%。General tariff:30.0%

Frequently Asked Questions

What is the CAS number of Acid Red 1?

The CAS number of Acid Red 1 is 3734-67-6.

What are the molecular formula and molecular weight of Acid Red 1?

Acid Red 1 has molecular formula C18H13N3Na2O8S2 and molecular weight 509.421 g/mol.

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

Last updated:

How to cite: Jingsj. "Acid Red 1 (CAS 3734-67-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1098905-2 (accessed 2026-11-06).

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