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| | Orange IV Basic information |
| Product Name: | Orange IV | | Synonyms: | 4-[[4-(phenylamino)phenyl]azo]-benzenesulfonicacimonosodiumsalt;Benzenesulfonicacid,4-[[4-(phenylamino)phenyl]azo]-,monosodiumsalt;c.i.acidorange5,;c.i.acidorange5,monosodiumsalt;OrangeⅣ;sodium 4-[[4-(anilino)phenyl]azo]benzenesulphonate;TROPAEOLIN OO INDICATOR;OrangeIvC.I.13080 | | CAS: | 554-73-4 | | MF: | C18H16N3NaO3S | | MW: | 377.39 | | EINECS: | 209-071-4 | | Product Categories: | Indicator (pH);pH Indicators;Analytical Chemistry;Azo | | Mol File: | 554-73-4.mol |  |
| | Orange IV Chemical Properties |
| Melting point | >300°C | | storage temp. | Inert atmosphere,Room Temperature | | solubility | Solubility Soluble in water, ethanol | | pka | 2.0(at 25℃) | | form | Powder | | Colour Index | 13080 | | color | S. No.: 179 | | PH Range | 1.3(red)-3.2(yellow) | | λmax | 527nm, 443nm | | Merck | 14,9776 | | Stability: | Stable. Incompatible with strong oxidizing agents. | | Major Application | Sensors, 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 Reference | 554-73-4(CAS DataBase Reference) | | EPA Substance Registry System | Benzenesulfonic acid, 4-[[4-(phenylamino)phenyl]azo]-, monosodium salt (554-73-4) |
| | Orange IV Usage And Synthesis |
| Chemical Properties | yellow-brown or orange powder | | Uses | As indicator. pH: red 1.4 to yellow 2.6. | | Preparation | ommonly known as acidic orange IV. 4-Aminobenzenesulfonic acid diazo, with Diphenylamine coupling. | | Properties and Applications | yellow 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.
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Standard
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Light Fastness
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Soaping
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Persperation Fastness
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Oxygen bleaching
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Fastness to seawater
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Fading
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Stain
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Fading
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Stain
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Fading
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Stain
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ISO
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3
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1-2
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2
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1-2
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1-2
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| | Purification Methods | Recrystallise it twice from water [Kolthoff & Gus J Am Chem Soc 60 2516 1938]. [Beilstein 16 II 171.] |
| | Orange IV Preparation Products And Raw materials |
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