" /> 2-naphthol orange - CISMeF





Preferred Label : 2-naphthol orange;

MeSH note : structure; see also record for C.I. Solvent Orange 2;

CISMeF synonym : sodium 4-[(2-hydroxy-1-naphthyl)azo]benzenesulphonate; tropaeolin;

MeSH synonym : C.I. Acid Orange; acid orange 7; C.I. Acid Orange 7; Orange II; beta-naphthol orange; DC orange no. 4; orange 4; D&C orange no. 4; AO-7 dye;

MeSH CAS label : 4-((2-hydroxy-1-naphthalenyl)azo)benzenesulfonic acid monosodium salt;

MeSH Related Number : 633-96-5;

Registry Number MeSH : 633-96-5;

Codes EINECS : 211-199-0;

Is substance : O;

UNII : Q1LIY3BO0U;

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27/07/2025


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