| Molecular Formula | C38H24N8O12S4.4Na |
| Physical and Chemical Properties | Chemical properties reddish brown powder. Soluble in water, slightly soluble in ethanol, its aqueous solution is golden orange, add concentrated hydrochloric acid to produce yellow olive brown precipitate; add concentrated lye to produce brown orange precipitate. It is dark blue in concentrated sulfuric acid and golden yellow after dilution. Slightly sensitive to hard water. The color light of iron and copper ions is basically unchanged. |
| Use | Use direct sun-resistant orange GGL for cotton, viscose fiber fabric dyeing and direct printing, bright orange. Poor migration and levelness, good dyeing rate. The resin-treated color light was essentially unchanged or reddish. It can also be used for dyeing silk and its fabrics and dyeing polyester-polyester blended fabrics with disperse dyes in the same bath. It is also valued as a substitute for the prohibited use of C.I. Direct orange 1 (6,7,8,10,108). |
Using p-aminobenzenesulfonic acid, aniline and dinitro-stilbene disulfonic acid (4,4 '-dinitro-2, 2'-stilbenedisulfonic acid) as raw materials, first diazotize p-aminobenzenesulfonic acid, and then couple it with aniline to obtain a monoazo compound, and then heat and reflux this monoazo compound and dinitro-stilbene, all products were treated with glucose and caustic)..
Add 50mL of water, 10g of 4,4 '-dinitrostilbene -2,2'-disulfonic acid, 6.5g of 4-aminoazobenzene -4 '-sulfonic acid and 10mL NaOH solution (30%) into the reaction flask, stir and raise the temperature to 70-80 ℃ to dissolve the material. Continue to raise the temperature to 100 ℃, reflux for 5h, reduce the temperature to 70-80 ℃, add 100mL of water and 2-2.5g of glucose, slowly raise the temperature to 82 ℃, and keep the temperature for 3.5h. Then add NaClO solution (about 6g) dropwise until the solution becomes clear, continue to keep the temperature for 0.5h, add salt for salting out, filtering, washing and drying to obtain the finished product.