Disperse Blue 79 CAS#12239-34-8
High Dyeing Efficiency – Delivers strong and consistent coloration on polyester and its blends.
Good Acetone Solubility – Ensures smooth and uniform dye dispersion.
Stable Color in Presence of Iron Ions – Maintains color quality under certain metal ion exposures.
Versatile Form – Available in uniform powder or granules for flexible application methods.
Disperse Blue 79 is a highly effective disperse dye, available as a uniform black-gray powder or granules. It is soluble in acetone. Its color remains essentially unchanged when exposed to iron ions, but changes significantly when exposed to copper ions. It is primarily used for dyeing polyester and its blends.
English name | Disperse Blue 79 |
English synonyms | 2,2'-[[5-acetamide-4-[(2-bromo-4,6-dinitrophenyl)azo]-2-ethoxyphenyl]imino]diethyl diacetate;Disperse D ark Blue S-3BG;Disperse Navy Blue HGL;DisperseBlue79(C.I.11345);4-(2-Bromo-4,6-dinitrophenylazo)-5-ace tylamino-2-ethoxy-N,N-bis(2-acetoxyethyl)aniline;Disperse Navy Blue S-2GL;Disperse Navy Blue S-3BG;Am bicron Navy Blue |
CAS number | 12239-34-8 |
Molecular formula | C24H27BrN6O10 |
Molecular weight | 639.41 |
EINECS number | 235-475-5 |
Mol file | 12239-34-8.mol |
Melting point | 146°C |
Boiling point | 801.3±65.0 °C(Predicted) |
Density | 1.5437 (rough estimate) |
Refractive index | 1.6400 (estimate) |
Form | Solid |
Acidity coefficient (pKa) | 13.53±0.70(Predicted) |
Color | Brown to black |
Water solubility | 0.6394ug/L(25 ºC) |
CAS database | 12239-34-8(CAS DataBase Reference) |
EPA chemical substance information | C.I. Disperse Blue 79 (12239-34-8) |
Disperse Dark Blue 79 is primarily used for dyeing polyester and its blends, as well as for direct printing on polyester fabrics. It is a key high-temperature disperse dye for dyeing dark blue and navy blue, offering high sublimation fastness and resistance to dry heat. It can be combined with Disperse Yellow Brown H2RL and Disperse Ruby H2GFL to form a tri-color combination for dyeing a variety of medium and dark shades. It can also be used for dyeing triacetate, but is not suitable for dyeing diacetate, nylon, or acrylic.
