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| Direct Brown 190 Basic information |
Product Name: | Direct Brown 190 | Synonyms: | Direct Brown 190;C.I.Direct Brown 190:C.I.31750 | CAS: | | MF: | | MW: | 0 | EINECS: | | Product Categories: | | Mol File: | Mol File | |
| Direct Brown 190 Chemical Properties |
| Direct Brown 190 Usage And Synthesis |
Preparation | 4-(4-Aminophenyl)benzenamine double nitriding, first coupled with 2-Hydroxybenzoic acid
, and then in alkaline conditions 6-Amino-4-hydroxynaphthalene-2-sulfonic acid? coupling, product diazo again, and Resorcinol coupling. | Properties and Applications | red light brown. Soluble in water, ethanol and soluble fiber element, insoluble in other organic solvents. The strong sulfuric acid in the dark for the light blue, diluted red brown for solution, accompanied by precipitation. The dye solution to join 10% sulfuric acid as pale blue light red jujube; Add thick sodium hydroxide solution for blue-ray purplish red color.
Standard
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Acid Resistance
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Alkali Resistance
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Light Fastness
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Soaping
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Water
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Fading
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Stain
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Fading
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Stain
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AATCC
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3
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5
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2
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2
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2
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| Direct Brown 190 Preparation Products And Raw materials |
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