| Molecular Formula | C13H12NNaO3S |
| Molar Mass | 285.29405 |
| PH | 7~9 |
| Physical and Chemical Properties | The chemical product is beige powder. Easily soluble in water, anionic, with solubility, penetration and diffusion. |
| Use | This product is mainly used as a solvent, diffusion agent and levelling agent for vat dyes, sulfur vat dyes and soluble vat dyes in printing. It can also be used as ice dye, direct dye white agent. |
| Raw Materials | Sulfanilic acid |
Non hazardous materials. Cannot blend with cations. Store in a cool and dry warehouse.
Add 400kg of water to the reaction kettle, add 86kg of sodium carbonate under stirring, dissolve, and slowly add p-aminobenzenesulfonic acid above 90 ℃ until fully dissolved. Start dripping 100kg of benzyl chloride at around 95 ℃. The pH value during the reaction is around 9. After dripping, react at 90-95 ℃ for 5 hours. Sampling and measuring the endpoint (at the endpoint, the sample is opaque and not stratified, with a pH value of 7-9). Cool down, filter, place the filtrate in an acid washing kettle, add twice the amount of ice water, cool to 20 ℃, and acidify with hydrochloric acid until the pH value is 2. Filter, the filter cake is p-benzylaminobenzenesulfonic acid. Neutralize, concentrate, cool and crystallize with Na2CO3 aqueous solution, filter and dry, grind and mix to obtain co solvent B.
| EPA chemical information | Benzenesulfonic acid, 4-[(phenylmethyl)amino]-, monosodium salt (32339-03-0) |
400kg of water is added into the reaction kettle, 86kg of sodium pudding is added into the reaction kettle under stirring, and after dissolution, p-aminobenzenesulfonic acid is slowly added above 90 ℃ and stirred until fully dissolved. Start dropping 100kg of benzyl chloride at about 95 ℃. The pH value is about 9 during the reaction. After dropping, react at 90~95 ℃ for 5h. The end point of sampling was measured (the sample was opaque, not stratified, and the pH value was 7~9). Cool down, filter, put the filtrate into a pickling kettle, add twice the speed of ice water, cool to 20 ℃, acidify with hydrochloric acid to pH 2. Filtration, the filter cake is p-benzylaminobenzene sulfonic acid. Neutralize with Na2CO3 aqueous solution, concentrate, cool and crystallize, filter and dry, crush and mix with cosolvent B.