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Vat Blue 4B

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Vat Blue 4B Basic information
Vat Blue 4B Chemical Properties
Safety Information
  • RTECS NM3259100
Vat Blue 4B Usage And Synthesis
  • Preparation(a) and Acetic anhydride in the presence of Sodium acetate trihydrate in Acetic acid glacial will 3H-indol-3-one,2-(1,3-dihydro-3-oxo-2H-indol-2-ylidene)-1,2-dihydro-? ?tetrabromide?(FIAT764); (b) in the boiling Nitrobenzene with Bromine will 3H-indol-3-one,2-(1,3-dihydro-3-oxo-2H-indol-2-ylidene)-1,2-dihydro- four bromination, (C) 3H-indol-3-one,2-(1,3-dihydro-3-oxo-2H-indol-2-ylidene)-1,2-dihydro- in Chlorosulfonic acid (GP 225227) or in Sulfuryl chloride (GP 229304) and bromine reaction.
  • Properties and Applicationsblue. Dark blue powder. Etanol and insoluble in water, soluble in Xylene, Nitrobenzene and 1, 2, 3, 4 – Tetrahydronaphthalene. Alkaline reduction leuco for yellow; Acid reduction leuco for pale yellow. In concentrated sulfuric acid to blue light green, diluted into blue, and the emergence of precipitation. Used for cotton of jig dyeing and yarn dyeing, dyeing hair blue cloth color turquoise blue. Is the important dye printing, can direct printing, also can discharge printing and resist printing. Can also be used for viscose, silk and wool dyeing, levelness and affinity are good. Can be processed into organic pigment
    Standard Ironing Fastness Chlorine bleach Light Fastness Mercerized Oxygen bleach Soaping
    Fading Stain
    ISO 5 2 4-5 4 3-4 4-5 5
    AATCC 5 2 4-5 3-4 4
Vat Blue 4B Preparation Products And Raw materials
Vat Blue 4B(2475-31-2)Related Product Information
Vat Blue 4BSupplierMore
  • Company Name:J & K SCIENTIFIC LTD.
  • Tel:400-666-7788 010-82848833-
  • Company Name:Meryer (Shanghai) Chemical Technology Co., Ltd.
  • Tel:400-660-8290 21-61259100-
  • Company Name:TCI (Shanghai) Development Co., Ltd.
  • Tel:021-67121386 / 800-988-0390
  • Company Name:Energy Chemical
  • Tel:400-005-6266 021-58432009-
  • Company Name:Maya High Purity Chemicals
  • Tel:+86 (573) 82222445 (0)18006601000 QQ:452520369