Tianjin Greatwall Youxing Chemical Co.,Ltd.

Quality Standard: (1) Apperance: Yellow powder (2) Content:≥75%(Total amido value) ;2-(4-Aminophenyl)-6-methyl-1,3-benzothiazole-7-sulfonic acid;Dehydrothio-p-Toluidi... >>>

Quality Standard: Apperance: Dark canary uniform powder. Intensity: 100±3 % of the standard. Colorful light: Approximate to standard Yellow powder,lem... >>>

Not soluble in water and salt solvent,easily soluble in acetic acid and sulfuric acid. ;Dehydrothio-4-toluidine;2-(4-Aminophenyl)-6-methylbenzothiazole;2-(p-Aminophenyl)-6-methyl... >>>

Quality Standard: (1) Apperance: Pastelike wet material,yellow or brown yellow (2) Content: Pastelike material>40% ;Dehydrosulfo-p-toluidine double sulfo aci... >>>

;Direct Yellow 142;... >>>

Properties: yellow powder, soluble in water Method of preparation: diazotization of methylbenzothiazoledisulfonic acid; Dehydrothio-p-toluidinesulfonic acid, and coupl... >>>

;C.I. Direct Red 80, hexasodium salt;C.I. direct red 80;DirectRed;hexasodium 4-hydroxy-7-[({5-hydroxy-7-sulfonato-6-[(E)-{2-sulfonato-4-[(E)-(4-sulfonatophenyl)diazenyl]phenyl}dia... >>>