| Molecular Formula | C40H38N12Na2O8S2 |
| Molar Mass | 924.91486 |
| Density | 0.417-1.54[at 20℃] |
| Melting Point | >270 °C |
| Water Solubility | 1.223-1.9g/L at 20-25℃ |
| Solubility | DMSO (Slightly), Methanol (Very Slightly, Heated) |
| Vapor Presure | 0-0Pa at 25℃ |
| Appearance | Solid |
| Color | Pale Yellow |
| Storage Condition | 存放在阴凉、干燥的库房内,避光,贮存期24个月。荧光增白剂FBCW产品运输时应避免碰撞和曝晒。 |
| Physical and Chemical Properties | There are two types of structures, namely α- The amorphous structure consists of light yellow powder and β- The crystal form is a white crystal. β- Crystal shape has a good whitening effect, high affinity for cellulose fibers, stability for chlorine bleach, high whitening effect in the range of 20~100 ℃, absorption spectrum wavelength of 349nm, fluorescence emission wavelength of 442nm, moderate solubility in water, smaller than whitening agents VBL and JD-3, soluble in ethylene glycol, and can be mixed with hot water to form a 10% suspension. Anionic type, can be mixed with anionic surfactants, dyes, and non-ionic surfactants, with a fluorescent color of cyan. |
| Use | Used for paper whitening; It also has a good whitening effect on fabrics such as cotton fibers, amino plastics, and nylon. |
Firstly, add 850kg of water to the ingredient pot, stir and add 285kg of DSD acid. After heating and dissolving, adjust the pH value to 6-7 using a 10% sodium carbonate aqueous solution. Then move it into the high-level slot for backup. Add 3000kg of ice water to the condensation kettle and 1400kg of 20% melamine acetone solution below 0 ℃. Stir to disperse evenly, then add DSD sodium acid aqueous solution dropwise at 0-5 ℃. Adjust the pH value at any time with a 10% sodium carbonate solution to maintain it at 6-7.5. After dripping, add 156kg of aniline, react at 30-35 ° C for 2 hours, then add 170kq of morpholine, and react at 80 ° C for another 2 hours. After completing the reaction, evaporate acetone and adjust the pH value to 6-7.5 with alkali. Heat up to 120-130 ° C at this temperature α- Transforming amorphous objects into β- Crystallization, cooling after transformation, filtering, washing filter cake with water, adding a certain amount of sodium carbonate, kneading, drying at 80 ℃, and mixing with sodium sulfate (anhydrous sodium sulfate) to the required fluorescence intensity to obtain whitening agent DMS.
| LogP | -1.58-1.186 at 25℃ |
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| use | suitable for whitening cotton, polyester-cotton blended fabrics and other cotton blended fabrics |
| toxic substance data | information provided by: pubchem.ncbi.nlm.nih.gov (external link) |