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2-Naphthalenesulfonic acid, 5-amino-6-ethoxy-

Also known as: 5-amino-6-ethoxynaphthalene-2-sulphonic acid, 5-amino-6-ethoxy-2-naphthalenesulfonic acid, 5-amino-6-ethoxynaphthalene-2-sulfonic acid, 1-amino-2-ethoxy-6-sulpho-naphthalene, 1-amino-2-ethoxynaphthalene-6-sulfonic acid, 6-ethoxy-5-amino-naphthalene-2-sulfonic acid, C.I.38480, Ethoxy Cleve's Acid, 1-Amino-(naphthol-(2)-aethylaether)-sulfonsaeure-(6)

2-Naphthalenesulfonic acid, 5-amino-6-ethoxy- (CAS 118-28-5) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C12H13NO4S and a molecular weight of 267.30100 g/mol. Key property: a density of 1.413g/cm3. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
118-28-5
Jingsj CID
J-1993814-8
Molecular Formula
C12H13NO4S
Molecular Weight
267.30100 g/mol
Category
Organic Acids
Last updated
8/21/2026
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Physicochemical Properties

Density1.413g/cm3
Exact Mass267.05700
PSA98.00000
LogP3.72940
Refractive Index1.653

Customs & Trade Information

HS Code2922299090
Summary2922299090. other amino-naphthols and other amino-phenols, other than those containing more than one kind of oxygen function, their ethers and esters; salts thereof. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:30.0%

Frequently Asked Questions

What is the CAS number of 2-Naphthalenesulfonic acid, 5-amino-6-ethoxy-?

The CAS number of 2-Naphthalenesulfonic acid, 5-amino-6-ethoxy- is 118-28-5.

What are the molecular formula and molecular weight of 2-Naphthalenesulfonic acid, 5-amino-6-ethoxy-?

2-Naphthalenesulfonic acid, 5-amino-6-ethoxy- has molecular formula C12H13NO4S and molecular weight 267.30100 g/mol.

What are the upstream and downstream products of 2-Naphthalenesulfonic acid, 5-amino-6-ethoxy-?

For 2-Naphthalenesulfonic acid, 5-amino-6-ethoxy-, Downstream Products: 6-Hydroxynaphthalene-2-sulfonic acid.

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

Last updated:

How to cite: Jingsj. "2-Naphthalenesulfonic acid, 5-amino-6-ethoxy- (CAS 118-28-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1993814-8 (accessed 2026-11-09).

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