| | Identification | Back Directory |  | [Name] 
 5-[[4-(aminosulphonyl)-2-nitrophenyl]amino]-2-[[4-[[4-(aminosulphonyl)-2-nitrophenyl]amino]phenyl]amino]benzenesulphonic acid
 |  | [CAS] 
 12239-00-8
 |  | [Synonyms] 
 C.I.10402
 Acid brown 248
 C.I. Acid Brown 248
 Nylosan Yellow Brown E-RL
 Weak Acid Yellow Brown 3GL
 C.I.Acid Brown 248:C.I.10402
 5-(2-nitro-4-sulfamoylanilino)-2-[4-(2-nitro-4-sulfamoylanilino)anilino]benzenesulfonicaci
 5-(2-nitro-4-sulfamoylanilino)-2-[4-(2-nitro-4-sulfamoylanilino)anilino]benzenesulfonic acid
 5-[[4-(aminosulfonyl)-2-nitrophenyl]amino]-2-[[4-[[4-(aminosulfonyl)-2-nitrophenyl]amino] phenyl]amBenzenesulfonic acid
 5-[[4-(Aminosulfonyl)-2-nitrophenyl]amino]-2-[[4-[[4-(aminosulfonyl)-2-nitrophenyl]amino]phenyl]amino]benzenesulfonic acid
 5-[[4-(aminosulphonyl)-2-nitrophenyl]amino]-2-[[4-[[4-(aminosulphonyl)-2-nitrophenyl]amino]phenyl]amino]benzenesulphonic acid
 Benzenesulfonic acid, 5-[[4-(aminosulfonyl)-2-nitrophenyl] amino]-2-[[4-[[4-(aminosulfonyl)-2-nitrophenyl ]amino]phenyl]amino]-
 |  | [EINECS(EC#)] 
 235-472-9
 |  | [Molecular Formula] 
 C24H21N7O11S3
 |  | [MOL File] 
 12239-00-8.mol
 |  | [Molecular Weight] 
 679.659
 | 
 | Hazard Information | Back Directory |  | [Chemical Properties] 
 Brown powder. Soluble in water. Addition of hydrochloric acid to aqueous solution does not change color; addition of sodium hydroxide causes the color to lighten. In concentrated sulfuric acid, it exhibits a greenish-yellow hue and remains unchanged upon dilution. During dyeing, the color darkens upon contact with copper or iron ions.
 |  | [Preparation] 
 5-Amino-2-(4-aminophenylamino)benzenesulfonic acid and 4-Chloro-3-nitrobenzenesulfonamide?(2 Moore) condensation.
 |  | [Properties and Applications] 
 brown. Brown powder, soluble in water. The strong sulfuric acid dyes for green light yellow, no change after diluted; After add sodium hydroxide color becomes shallow. Levelness and discharge good sex, in dyeing copper and iron ion color shade darker. Used for wool, silk and wool products dyeing, general is not used for printing.
 
 
 
 
 | Standard | Light Fastness | Soaping | Persperation Fastness | Oxygen bleaching | Fastness to seawater |  
 | Fading | Stain | Fading | Stain | Fading | Stain |  
 | ISO | 6 | 1-2 | 3-4 | 4 | 2-3 | 3 | 4 | 4-5 |  | 
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