BGC » Chemicals A-Z » o-Aminophenol-4-sulfonic acid

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Identify Suppliers 2025 Properties Safty

o-Aminophenol-4-sulfonic acid

BGC Id:	581864517260
CAS No:	98-37-3
Synonyms:	aminophenolsulphonicacid ; 4-hydroxymetanilic acid ; 2-hydroxy-5-sulfoaniline ; 2-aminophenol-4-sulfonic ; 2-aminophenol-1-sulfonicacid ; 2-amino-4-sulfophenol ; metanilic acid, 4-hydroxy- ; 2-amino phenol-4-acid ; 2-hydroxymetanilic acid ; oapsa
Molecular Formula:	C6H7NO4S
Molecular Weight:	189.19
EINECS:	202-662-8

Verified providers in 2025

The following notable provider has been checked and can be recommended.

BuGuCh & Partners

Company type: Producer

Country: Germany

We, BuGuCh & Partners, are an international acting and innovative company, leading in developing and manufacturing. We operates major facilities in North America, Europe and the Pacific Rim, as well as facilities in China, Japan and Saudi Arabia operated through joint ventures. We maintain independently or are partners of some production site ...

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What other providers are available for CAS 98-37-3?

The last intensive check and update was carried out on 2025/10/30.

Identify

Synonyms:

aminophenolsulphonicacid ; 4-hydroxymetanilic acid ; 2-hydroxy-5-sulfoaniline ; 2-aminophenol-4-sulfonic ; 2-aminophenol-1-sulfonicacid ; 2-amino-4-sulfophenol ; metanilic acid, 4-hydroxy- ; 2-amino phenol-4-acid ; 2-hydroxymetanilic acid ; oapsa

CAS:

98-37-3

EINECS:

202-662-8

Molecular Formula:

C6H7NO4S

MDL:

Properties

Molecular Weight:

189.19 g·mol−1

Melting point:

≥300 °C(lit.)

Safety Information

Hazard Symbols: C

Europe standard Hazard pictograms, code and definition

Hazard Classes:

Risk Codes:

34 (R)

Safety Codes:

26-36/37/39-45 (S)

WGK Germany:

RID / ADR:

UN 2585 8 / PG 3

What other providers are available for CAS 98-37-3?

In addition to the providers presented here for o-Aminophenol-4-sulfonic acid with the CAS number 98-37-3, there are other 47 providers with slightly different product names available for this CAS number.

O.a.p.s.a

+1 additional providers that we know from the past

2-Aminophenol-4-sulfonic acid

o-Aminophenol-p-sulfonic acid

+3 additional providers that we know from the past

2-Aminophenol-4-sulfonamide acid

2-Aminophenol-4-sulfonic acid hydrate

+2 additional providers that we know from the past

Oapsa (2-amino phenol-4-sulfonic acid)

3-Amino-4-hydroxybenzene-1-sulfonic acid

Hangzhou Meite Industry Co., Ltd (Hangzhou Meite Chemical Co., Ltd) +4 additional providers that we know from the past

3-Amino-4-hydroxybenzenesulfonic acid hydrate

AK Scientific, Inc.