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2-naphthalene sulfonic acid, 8-Hydroxy-5,7 dinitro

Naphthol Yellow S (citronin A, flavianic acid sodium salt, 8-hydroxy-5,7-dinitro-2-naphthalene sulfonic acid disodium salt) [846-70-8] M 358.2, m dec on heating. Greenish yellow powder soluble in H2O. The free sulfonic acid can be recrystd from dil HCl (m 150°) or AcOH-EtOAc (m 148-149.5°). The disodium salt is then obtained by dissolving the acid in two equivalents of aqueous NaOH... [Pg.443]

See other pages where 2-naphthalene sulfonic acid, 8-Hydroxy-5,7 dinitro is mentioned: [Pg.202]    [Pg.203]   
See also in sourсe #XX -- [ Pg.262 ]



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1- Hydroxy-8- naphthalene

8- naphthalene-1-sulfonic acid

Acids naphthalene sulfonic acid

Hydroxy sulfonic acids

Hydroxy-naphthalene sulfonates

Naphthalene sulfonates

Naphthalene, 1,4-dinitro

Naphthalenes 8- naphthalene- 1-sulfonic acid

Naphthalenes sulfonation

Sulfonated naphthalene

Sulfones, hydroxy

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