The Disperse Black 9 with the cas number 12222-69-4. It is also called 2-[4-[(4-aminophenyl)diazenyl]-N-(2-hydroxyethyl)anilino]ethanol, which is also it's IUPAC name, and it's system Name are (1)2,2'-((4-((4-Aminophenyl)azo)phenyl)imino)bisethanol ; (2)Ethanol, 2,2'-((4-((4-aminophenyl)azo)phenyl)imino)bis- ; (3)Ethanol, 2,2'-((4-(2-(4-aminophenyl)diazenyl)phenyl)imino)bis-. It is brown-black powder. Disperse Black 9 is a monoazo dye used in hair dyes at a concentration not exceeding 0.4%. 

Physical properties about this chemical are: (1)H bond acceptors: 6 ; (2)H bond donors: 4 ; (3)Freely Rotating Bonds: 10 ; (4)Polar Surface Area: 49.66 Å² ; (5)Index of Refraction: 1.61 ; (6)Molar Refractivity: 84.86 cm³ ; (7)Molar Volume: 244.7 cm³; (8)Surface Tension: 51.2 dyne/cm ; (9)Density: 1.22 g/cm³ ; (10)Flash Point: 298.1 °C ; (11)Enthalpy of Vaporization: 89.85 kJ/mol ; (12)Boiling Point: 569.2 °C at 760 mmHg ; (13)Vapour Pressure: 8.51E-14 mmHg at 25°C

When you are using Disperse Black 9, please be cautious about it as the following: Studies shows that Disperse Black 9 was slightly toxic when administered orally and practically nontoxic when administered intraperitoneally. The dye was nonirritating to rabbit eyes at a concentration of 100% and was nonirritating to both the intact and abraded skin of rabbits at concentrations up to 0.38%. Disperse Black 9 at 25% did not produce either irritation or sensitization in guinea pigs. Disperse Black 9 was toxic at 1% but not at 0.1 %, showed in subchronic oral studies. There were no signs of local or systemic toxicity at concentrations up to 0.24% in formulations. In chronic studies, dye containing 0.13% Disperse Black 9 was nontoxic to dogs. A hair dye formulation containing 0.5% Disperse Black 9 produced no significant toxicological effects when applied dermally to mice for 20 months. Disperse Black 9 (0.13% in a dye composite) produced neither teratogenic nor reproductive effects in rats or rabbits. Disperse Black 9 was nonmutagenic in four different assay systems. Disperse Black 9, 0.5% in a hair dye, was not carcinogenic when dermally applied to mice. A 3% suspension of the dye produced no irritation or sensitization in human subjects. On the basis of the available data, it is concluded that Disperse Black 9 is safe for use as a cosmeticingredient.

You can still convert the following datas into molecular structure :
(1).Smiles: OCCN(c1ccc(\N=N\c2ccc(N)cc2)cc1)CCO
(2).InChI=1/C16H20N4O2/c17-13-1-3-14(4-2-13)18-19-15-5-7-16(8-6-15)20(9-11-21)10-12-22/h1-8,21-22H,9-12,171H21/b19-18+