| Molecular Formula | C34H28N10Na2O8S2 |
| Molar Mass | 814 |
| Physical and Chemical Properties | The chemical product is a light yellow powder. Easily soluble in water, acid stable, resistant to hydrogen oxide bleaching. The maximum absorption wavelength is 350 nm and the long fluorescence emission wavelength is 432 nm. Anionic type. It can be used in the same bath with anionic surfactants and dyes, non-ionic surfactants, peroxides or reducing bleaches. |
| Use | Use of this product for cotton, viscose fiber, nylon whitening. Also used in synthetic detergents or softeners, can make the fabric after washing the appearance of white and beautiful. It can also be used for the whitening treatment of silk fabrics, animal fibers and polyamide fibers. |
This product can be managed according to general industrial chemicals. When using it, gloves and protective glasses should be worn to avoid direct contact with the skin and eyes. If it gets on the skin, rinse with water and soap. Place in a cool and dry warehouse to prevent exposure to sunlight and rain.
Put 115kg of methanol into the reactor, then add 195kg of sodium hydroxide and a small amount of water. Cool to 0 ℃. Add 300kg of cyanuric chloride under stirring and control the reaction temperature below 10 ℃. Add 283kg of DSD acid and 300kg of water to the ingredient pot. Stir and beat the pulp. Adjust the pH value to 7.5, and then add the prepared solution dropwise to the reaction kettle within 1 hour. During the dropwise addition process, maintain the pH value at 6-7 and the reaction temperature at 15-18 ℃. After the dripping is completed, raise the temperature to 40 ℃ within 1 hour and maintain the reaction for about 3 hours. Adjust the pH value to 7 with soda ash and then add 148kg of aniline. Heat up to 70 ℃ and steam out methanol, then react to 90 ℃. After the reaction is completed, filter the residue while it is hot, acidify the filtrate with hydrochloric acid and cool it, crystallize it, filter it, knead the filter cake with baking soda, dry it, and crush it to obtain the whitening agent BBH. Adjust to the desired fluorescence level with urea.
put 115 kg of methanol into the reactor, then add 195 kg of sodium hydroxide and a small amount of water. Cool to 0 ℃. 300 kg cyanuric chloride was added under stirring, and the reaction temperature was controlled below 10 ℃. In addition, 283kg DSD acid and 300 kg of water were added to the frying pan. Stir and beat. Adjust the pH value to 7.5, and then drop the prepared solution into the reaction kettle within 1 h. During the drop process, keep the pH value at 6~7 and the reaction temperature at 15~18 ℃. After dropping, the temperature was raised to 40 ℃ within 1 h, and the reaction was maintained for about 3 h. Adjust the pH value to 7 with soda ash. Then 148kg of aniline was added. The temperature is raised to 70°C to evaporate methanol, and then react to 90°C. After the reaction is completed, the residue is filtered while hot, the filtrate is acidified with hydrochloric acid and cooled, crystallized, filtered, the filter cake is kneaded with baking soda, dried, and crushed to obtain the whitening agent BBH. Adjust to the desired fluorescence with urea.