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CAS No.: 633-96-5 Formula: C16H11N2O4SNa
Weight: 350.324
Synonyms: C.I. 15510; C.I. Acid Orange 7; C.I. Acid Orange 7, monosodium salt; Orange II sodium salt; 4-(2-Hydroxy-1-naphthylazo)benzenesulfonic acid sodium salt; Sodium 4-[(2-hydroxy-1-naphthyl)azo]benzenesulphonate; Orange Ⅱ; Acid Orange II Lake; Pigment Orange 17; sodium 4-[(2E)-2-(2-oxonaphthalen-1(2H)-ylidene)hydrazino]benzenesulfonate; sodium 4-[(E)-(2-hydroxynaphthalen-1-yl)diazenyl]benzenesulfonate;
Uses Acid Orange II is mainly used for the dyeing of wool, silk, nylon and the direct printing of fabrics, with bright color and good levelness, but poor fastness. It is also used for the coloring of leather, paper and biological products. The pure product can be used as food coloring and as an indicator. Can be blended with Acid Black 10B (C.I. Acid Black 1) to form Acid Black ATT.
