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4-[(5-chloro-4-methyl-2-sulfophenyl)azo]-3-hydroxy-2-naphthoic acid

Also known as: 4-[(5-chloro-4-methyl-2-sulfophenyl)azo]-3-hydroxy-2-naphthalenecarboxylic acid, C.I. Pigment Red 48, Pigment Red No. 48, 2-Naphthalenecarboxylic acid, 4-(2-(5-chloro-4-methyl-2-sulfophenyl)diazenyl)-3-hydroxy-, EINECS 240-150-6

4-[(5-chloro-4-methyl-2-sulfophenyl)azo]-3-hydroxy-2-naphthoic acid (CAS 16013-44-8) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C18H13ClN2O6S and a molecular weight of 420.82400 g/mol. Key property: a density of 1.59g/cm3. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
16013-44-8
Jingsj CID
J-1146927-5
Molecular Formula
C18H13ClN2O6S
Molecular Weight
420.82400 g/mol
Category
Organic Acids
Last updated
8/21/2026
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Physicochemical Properties

Density1.59g/cm3
Exact Mass420.01800
PSA141.51000
LogP3.91580
Refractive Index1.695

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 4-[(5-chloro-4-methyl-2-sulfophenyl)azo]-3-hydroxy-2-naphthoic acid?

The CAS number of 4-[(5-chloro-4-methyl-2-sulfophenyl)azo]-3-hydroxy-2-naphthoic acid is 16013-44-8.

What are the molecular formula and molecular weight of 4-[(5-chloro-4-methyl-2-sulfophenyl)azo]-3-hydroxy-2-naphthoic acid?

4-[(5-chloro-4-methyl-2-sulfophenyl)azo]-3-hydroxy-2-naphthoic acid has molecular formula C18H13ClN2O6S and molecular weight 420.82400 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. "4-[(5-chloro-4-methyl-2-sulfophenyl)azo]-3-hydroxy-2-naphthoic acid (CAS 16013-44-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1146927-5 (accessed 2026-11-09).

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