2-Nitroso-1-naphthol-4-sulfonic acid

BGC Id:	350286579077
CAS No:	3682-32-4
Synonyms:	4-hydroxy-3-nitrosonaphthalene-1-sulphonic acid ; 4-hydroxy-3-nitrosonaphthalene-1-sulfonic acid ; 2-nitroso-1-naphthol-4-sulphonic acid tetrahydrate ; 2-nitroso-1-hydroxy-4-naphthalenesulfonic acid ; nitroso-nw acid ; labotest-bb lt00454247 ; 4-hydroxy-3-nitroso-1-naphthalenesulfonic acid ; 2-nitroso-1-naphthol-4-sulfonic acid ; 3-nitroso-nw acid ; 4-hydroxy-3-nitroso-1-naphthalenesulfonicaci
Molecular Formula:	C10H7NO5S.4H2O
Molecular Weight:	253.23
EINECS:	222-964-3

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The last intensive check and update was carried out on 2025/10/02.

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Synonyms:

4-hydroxy-3-nitrosonaphthalene-1-sulphonic acid ; 4-hydroxy-3-nitrosonaphthalene-1-sulfonic acid ; 2-nitroso-1-naphthol-4-sulphonic acid tetrahydrate ; 2-nitroso-1-hydroxy-4-naphthalenesulfonic acid ; nitroso-nw acid ; labotest-bb lt00454247 ; 4-hydroxy-3-nitroso-1-naphthalenesulfonic acid ; 2-nitroso-1-naphthol-4-sulfonic acid ; 3-nitroso-nw acid ; 4-hydroxy-3-nitroso-1-naphthalenesulfonicaci

CAS:

3682-32-4

EINECS:

222-964-3

Molecular Formula:

C10H7NO5S.4H2O

MDL:

Properties

Molecular Weight:

253.23 g·mol−1

Melting point:

140-145 °C (dec.)

Safety Information

Hazard Symbols: Xn, Xi

Europe standard Hazard pictograms, code and definition

Hazard Classes:

Risk Codes:

20/21/22-33-36/37/38 (R)

Safety Codes:

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

WGK Germany:

What other providers are available for CAS 3682-32-4?

In addition to the providers presented here for 2-Nitroso-1-naphthol-4-sulfonic acid with the CAS number 3682-32-4, there are other 12 providers with slightly different product names available for this CAS number.

2-Nitroso-1-naphthol-4-sulfonic acid hydrate

+1 additional providers that we know from the past

2-Nitroso-1-naphthol-4-sulfonic acid 4-hydrate

BIOZOL Diagnostica Vertrieb GmbH | BuGuCh & Partners +4 additional providers that we know from the past

4-Hydroxy-3-nitroso-1-naphthalenesulfonic acid

Dayang Chem (Hangzhou) Co.,Ltd. | AK Scientific, Inc. +3 additional providers that we know from the past