Product Details
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 largely unchanged when exposed to iron ions but undergoes significant changes in the presence of copper ions. This dye is primarily used for coloring polyester and its blends.
Product Parameter
| 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) |
Product Application
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 producing dark blue and navy shades, 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 trichromatic combination for dyeing a variety of medium to dark shades. This dye is also suitable for dyeing triacetate but is not recommended for use on diacetate, nylon, or acrylic fibers.
