disodium 4-hydroxy-6-(phenylamino)-3-[(4-sulphonatophenyl)azo]naphthalene-2-sulphonate

CAS NO.：6222-56-6
Empirical Formula: C22H15N3Na2O7S2
Molecular Weight: 543.47994
EINECS: 2283056

What is disodium 4-hydroxy-6-(phenylamino)-3-[(4-sulphonatophenyl)azo]naphthalene-2-sulphonate ?

Preparation

4-Aminobenzenesulfonic acid?diazo, in alkaline conditions and 4-Hydroxy-6-(phenylamino)naphthalene-2-sulfonic acid coupling.

Properties and Applications

dark red light brown. Soluble in water, soluble in ethanol in very small amounts of red brown. The strong sulfuric acid for red, for orange brown after diluted. In water solution to join strong hydrochloric acid for brown; Add thick sodium hydroxide solution for red wine.

Safety information for disodium 4-hydroxy-6-(phenylamino)-3-[(4-sulphonatophenyl)azo]naphthalene-2-sulphonate

disodium 4-hydroxy-6-(phenylamino)-3-[(4-sulphonatophenyl)azo]naphthalene-2-sulphonate manufacturer

Galaxy Exports

Beijing

product: Acid brown 88

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