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Orange IV

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Orange IV Basic information
Orange IV Chemical Properties
  • Melting point:>300°C
  • storage temp. Inert atmosphere,Room Temperature
  • solubility Solubility Soluble in water, ethanol
  • Colour Index 13080
  • form Powder
  • pka2.0(at 25℃)
  • color S. No.: 179
  • PH Range1.3(red)-3.2(yellow)
  • λmax527nm, 443nm
  • Merck 14,9776
  • Stability:Stable. Incompatible with strong oxidizing agents.
  • Major ApplicationSensors, lithographic plates, optical recording media, photoreceptor, inks, indication system for product exceeding threshold temperature, lubricants, textiles, food storage, determination of amiodarone, astemizole, bromhexine, clomipramine, deutiforin, domperidone, fluoroquinolone, roxithromycin, terfenadine, thiabendazole, antihistamines
  • CAS DataBase Reference554-73-4(CAS DataBase Reference)
  • EPA Substance Registry SystemBenzenesulfonic acid, 4-[[4-(phenylamino)phenyl]azo]-, monosodium salt (554-73-4)
Safety Information
Orange IV Usage And Synthesis
  • Chemical Propertiesyellow-brown or orange powder
  • UsesAs indicator. pH: red 1.4 to yellow 2.6.
  • Preparationommonly known as acidic orange IV. 4-Aminobenzenesulfonic acid diazo, with Diphenylamine coupling.
  • Properties and Applicationsyellow orange. Soluble in water and ethanol for orange, slightly soluble in ethyl ether, insoluble in benzene. The strong sulfuric acid is purple, dilute appears after the purple precipitation. In water solution to join hydrochloric acid appear purple precipitation; With sodium hydroxide appear yellow precipitation. Used for wool, silk, cotton, vinegar fiber etc fiber dyeing. Can also be used to indicator, paper, soap kind, straw and leather color. Good levelness, discharge sex medium, dyeing encounter copper, iron ion color shade darker.
    Standard Light Fastness Soaping Persperation Fastness Oxygen bleaching Fastness to seawater
    Fading Stain Fading Stain Fading Stain
    ISO 3 1-2 2 1-2 1-2
  • Purification MethodsRecrystallise it twice from water [Kolthoff & Gus J Am Chem Soc 60 2516 1938]. [Beilstein 16 II 171.]
Orange IV(554-73-4)Related Product Information
Orange IVSupplierMore
  • 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:Adamas Reagent, Ltd.
  • Tel:400-600-9262