Molecular Formula: C₂₀H₁₆N₄Na₂O₉S₂
Molar mass: 566.47 g/mol
EINECS: 235-401-1
Appearance: Dark red powder
Solubility: Soluble in water,Slightly soluble in ethanol, acetone and ethylene glycol ether, insoluble in other organic solvents
Product categories of Acid violet 7 (4321-69-1): Organics;Dyes and Pigments;Stains
Structure of Acid violet 7 (4321-69-1):
                   
H-Bond Donor: 3
H-Bond Acceptor: 11
IUPAC Name: Disodium
5-acetamido-3-[(4-acetamidophenyl)hydrazinylidene]-4-oxonaphthalene-2,
7-disulfonate
Canonical SMILES: CC(=O)NC1=CC=C(C=C1)NN=C2C(=CC3=CC(=CC(=C3C2=O)NC(=O)C)S(=O)(=O)[O-])S(=O)(=O)[O-].[Na+].[Na+]
InChI: InChI=1S/C20H18N4O9S2.2Na/c1-10(25)21-13-3-5-14(6-4-13)23-24-19-17(35(31,32)33)8-12-7-15(34(28,29)30)9-16(22-11(2)26)18(12)20(19)27;;/h3-9,
23H,1-2H3,(H,21,25)(H,22,26)(H,28,29,30)(H,31,32,33);;/q;2*+1/p-2 
InChIKey: UNEOZSZVJMTZBX-UHFFFAOYSA-L

 Acid violet 7 (4321-69-1) is not only mainly used for wool, silk fabrics and dyeing of leather and paper, but also can be used for coloring soap, wood and cosmetics.

Take P-aminoacetanilide and N-acetyl-H acid as raw materials, and have the diazotization of P-aminoacetanilide , and then has the coincidence of N-acetyl-H acid. After those,by salting out, filtration, drying, grinding to get the product .

Reported in EPA TSCA Inventory.

Low toxicity by ingestion. When heated to decomposition it emits toxic vapors of NO_x and SO_x.

 Acid violet 7 (4321-69-1) also can be called Acid naphthol red 6B ; Disodium 5-acetamido-3-(4-acetamidophenyl)azo-4-hydroxynaphthalene-2,7-disulphonate .