| Name | Direct Red Brown RN |
| Synonyms | Direct Red Brown RN |
| Molecular Formula | C38H28N12O12S4.4Na |
| Physical and Chemical Properties | Chemical nature dark brown powder. It is easily soluble in water and has good stability to hard water. |
| Use | Use Direct Red Brown RN is suitable for dyeing and printing of cotton, hemp, viscose fiber, silk and other fabrics, and can also be used for leather dyeing. |
Properties:
Direct Red Brown R is a cationic dye with good solubility and stability. It appears as a reddish-brown powder and is suitable for dyeing cotton, linen, silk, and other fibers. It shows good dyeing effects under weakly acidic conditions.
Uses:
Direct Red Brown R is primarily used in textile dyeing and can be applied to dye yarns, fabrics, and as a pigment or dye additive.
Synthesis:
Direct Red Brown R can be synthesized through a condensation reaction of aniline compounds and benzaldehyde imine compounds.
Safety:
Direct Red Brown R is generally considered safe for use under normal conditions. However, dye substances as a whole may possess certain levels of toxicity and can cause irritation to the skin and eyes. Proper safety measures should be taken during handling to avoid direct contact with the dye on the skin or inhalation of its dust. It is important to follow relevant safety protocols to ensure correct handling and use of the dye.
Using DSD acid, p-aminobenzenesulfonic acid, and m-phenylenediamine as raw materials, the p-aminobenzenesulfonic acid is first diazotized, and the m-phenylenediamine is coupled for the first time, and then the DSD acid is double Nitriding, and the product is coupled for the second time with the first coupling product to obtain the product. The finished product is salted out, filtered, dried and crushed.