Molecular structure of Disperse Violet 28 (CAS NO.81-42-5):

IUPAC Name: 1,4-Diamino-2,3-dichloroanthracene-9,10-dione
Molecular Weight: 307.13152 g/mol
Molecular Formula: C₁₄H₈Cl₂N₂O₂
XLogP3-AA: 3.9
H-Bond Donor: 2
H-Bond Acceptor: 4
Melting Point: 295 °C
Index of Refraction: 1.756
Molar Refractivity: 76.93 cm³
Molar Volume: 187.5 cm³
Surface Tension: 82.4 dyne/cm
Density: 1.637 g/cm³
Flash Point: 317.5 °C
Enthalpy of Vaporization: 89.5 kJ/mol
Boiling Point: 601.4 °C at 760 mmHg
Vapour Pressure: 2.02E-14 mmHg at 25 °C 
Canonical SMILES: C1=CC=C2C(=C1)C(=O)C3=C(C2=O)C(=C(C(=C3N)Cl)Cl)N
InChI: InChI=1S/C14H8Cl2N2O2/c15-9-10(16)12(18)8-7(11(9)17)13(19)5-3-1-2-4-6(5)14(8)20/h1-4H,17-18H2
InChIKey: KZYAYVSWIPZDKL-UHFFFAOYSA-N
EINECS: 201-348-8
Product Categories: Intermediates of Dyes and Pigments; Industrial/Fine Chemicals; Organics; Aminoanthraquinones; Anthraquinones 

 Disperse Violet 28 (CAS NO.81-42-5) is used for coloring a variety of resin. It is also used as dye intermediates.

Risk Statements: 36/37/38 
R36/37/38:Irritating to eyes, respiratory system and skin.
Safety Statements: 26-36/37/39
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. 
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection.

 Disperse Violet 28 (CAS NO.81-42-5) also can be called 9,10-Anthracenedione, 1,4-diamino-2,3-dichloro- ; 1,4-Diamino-2,3-dichloroanthraquinone . Disperse Violet 28 (CAS NO.81-42-5) is dark purple powder. It is soluble in acetone, ethanol and benzene .