Molecular Formula | C20H20N2O5S |
Molar Mass | 400.45 |
Density | 1.602[at 20℃] |
Melting Point | >300 °C |
Water Solubility | 21.35g/L at 20℃ |
Vapor Presure | 0Pa at 25℃ |
Physical and Chemical Properties | Soluble in water and ethanol. It is olive green in concentrated sulfuric acid and brownish orange after dilution. |
LogP | -0.048 at 20℃ |
EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
Use | acid blue 62 (weakly acid blue BRN) is used for dyeing wool, nylon and thick silk fabrics, it can also be used for direct printing of wool and silk. It can also be used for the dyeing of leather. |
production method | The bromamine acid is obtained by condensation with cyclohexane and salting out. Bromine (100%) 478 cyclohexylamine 150 Product Specification: NQ/HG2--1380--80 with bromine and cyclohexylamine as raw materials, the two were condensed under alkaline conditions to get the product. After salting out, filtration, drying, grinding to get the finished product.. 0.7mol of bromamine, 8.5 mol of cyclohexylamine, 2.95mol of sodium hydroxide, 0.05mol of copper sulfate, 55g of activated carbon and 5800mL of water were added into the reactor, heated to 95-100 ℃ and boiled under reflux for 18-20h, then excess cyclohexylamine was distilled out, it was filtered while hot, and the filtrate was salted out with salt, filtered and dried to give about 204g of the dye. or add 60L of water, 16kg of bromamine, 12.1kg of cyclohexylamine to the reaction pot, stir and beat, then add 0.15kg CuSO4, 0.15kg FeSO4, 3kg of liquid alkali (42%), 0.7kg of activated carbon, the temperature was raised to 75 °c for 4H, and then heated to 85 °c for 2H. Excess cyclohexylamine was distilled off, filtered while hot, and the filtrate was salted out with salt, filtered, dried, and pulverized to obtain a dye. |