| Molecular Formula | C19H12N2O2 |
| Physical and Chemical Properties | Chemical yellow powder with fluorescence. |
| Use | Uses disperse fluorescent yellow II is used for dyeing and printing of polyester and its blended fabrics, and is also used for plastic coloring. |
| Raw Materials | Paste 1,8-Naphthalic anhydride Azoic Diazo Component 1 Azoic Diazo Component 1 1,8-Naphthalic anhydride |
Using o-nitro-p-methoxyaniline and 1,8-naphthalene dimethyl anhydride as raw materials, the o-nitro-p-methoxyaniline is first reduced, and then condensed with 1,8-naphthalene dimethyl anhydride, The product is obtained by closed-loop dehydration. The finished product is filtered, ground and dried..
Add 500kg of 60% acetic acid and 14.28kg of o-nitro p-methoxyaniline to the reduction pot, stir, add 24.5kg of iron powder, heat to 60 ℃ until the reaction liquid infiltration ring is colorless as the end point, filter, and the filtrate is reserved.
Add the above filtrate and glacial acetic acid 50kg and 1,8-naphthalene dimethyl anhydride 15.3kg into the reaction pot, stir, and raise the temperature to 103-104 ℃. After the reaction is completed, acetic acid is steamed off, diluted with water, 46kg of 30% hydrochloric acid is added, the temperature is kept at 60 ℃ for 1h, the temperature is cooled to 50 ℃ for filtration, the filter cake is washed, and the original dye slurry is obtained. 50kg of diffusion agent NNO is added, ground, sieved, dried and crushed to obtain 75kg of dye commodity.