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2-Amino-4-chlorophenol-6-sulfonic acid

Also known as: 3-Amino-5-chloro-2-hydroxybenzenesulfonic acid, 6-Amino-4-chlorophenol-2-sulfonic acid, 2-Amino-4-chlorophenyl-6-sulfonic acid, 2-Amino-4-chlorphenol-6-sulfonsure, Metanilic acid, 5-chloro-2-hydroxy-, Benzenesulfonic acid, 3-amino-5-chloro-2-hydroxy-, 6-Amino-4-chloro-1-phenol-2-sulfonic acid, EINECS 201-813-5, MFCD00035768

2-Amino-4-chlorophenol-6-sulfonic acid (CAS 88-23-3) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C6H6ClNO4S and a molecular weight of 223.634 g/mol. Key properties include a melting point of 44-45 °C(lit.), a boiling point of 150 °C4 mm Hg(lit.), a density of 1.8±0.1 g/cm3 and a flash point of >110.0 °C. No supplier offers are currently listed; request a quote. Record last updated Nov 3, 2026.

CAS No.
88-23-3
Jingsj CID
J-6162-1
Molecular Formula
C6H6ClNO4S
Molecular Weight
223.634 g/mol
Category
Organic Acids
Last updated
11/3/2026

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Physicochemical Properties

Melting Point44-45 °C(lit.)
Boiling Point150 °C4 mm Hg(lit.)
Density1.8±0.1 g/cm3
Flash Point>110.0 °C
Exact Mass222.970612
PSA109.00000
LogP0.94
Refractive Index1.678

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-Amino-4-chlorophenol-6-sulfonic acid?

The CAS number of 2-Amino-4-chlorophenol-6-sulfonic acid is 88-23-3.

What are the molecular formula and molecular weight of 2-Amino-4-chlorophenol-6-sulfonic acid?

2-Amino-4-chlorophenol-6-sulfonic acid has molecular formula C6H6ClNO4S and molecular weight 223.634 g/mol.

What are the upstream and downstream products of 2-Amino-4-chlorophenol-6-sulfonic acid?

For 2-Amino-4-chlorophenol-6-sulfonic acid, Upstream Products: 2-Amino-4-chlorophenol, N-(5-chloro-2-hydroxyphenyl)acetamide.

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-Amino-4-chlorophenol-6-sulfonic acid (CAS 88-23-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-6162-1 (accessed 2026-11-09).

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