甲基橙 - 维基百科，自由的百科全书
甲基橙 （英語： Methyl orange）是一种常用的 酸碱指示剂，因为其在不同pH值下的颜色变化清晰明显：在25°C时，甲基橙在pH小于3.1的介质中呈红色，在pH大于4.4的介质中呈黄色。 其通常用于酸碱中和滴定。 在酸度降低的溶液中，甲基橙从红色变为橙色，最后变为黄色，而酸度增加的溶液中则相反。 甲基橙在25 °C（77 °F）的水中的pK a 为3.47。 [3] 由甲基橙和 二甲苯蓝 的溶液组成的指示剂，随着溶液碱性增强，颜色从灰紫色变为绿色。 甲基橙有 突变性。 [2] 當甲基橙 …
Methyl orange - Wikipedia
Methyl orange is an azobenzene derivative that can be formed from dimethylaniline and sulfanilic acid, first through a diazonium salt formation with the sulfanilic acid, followed by a nucleophilic attack from the dimethylaniline and rearomatization.
Methyl orange | C14H14N3NaO3S | CID 23673835 - PubChem
Based on limited data, this compound is expected to be resistant to aerobic biodegradation in both soil and water; methyl orange was not degraded over 5 days in an aqueous BOD screening test. Under anaerobic conditions, methyl orange should readily biodegrade.
Study on the adsorption properties of methyl orange by natural …
2021年5月20日 · Methyl orange (MO) is a common anionic azo dye that is harmful to the environment and biology, so it must be treated innocuously before it can be discharged. Adsorption is an effective method...
Adsorption of methyl orange from aqueous solution with lignin …
2023年11月1日 · The lignin-based metal–organic framework (UIO-g-NL) was prepared by a Schiff base reaction of aminated lignin and the zirconium cluster-based MOF (UIO-66-NH 2) as an adsorbent of methyl orange (MO). The results showed that UIO-g-NL maintained the original crystal structure and aminated lignin was successfully introduced after functionalization.
Adsorption of Methyl Orange from Water Using Chitosan Bead …
2023年3月22日 · In this study, the adsorption behaviour of methyl orange, MO, dye on chitosan bead-like materials was investigated as a function of shaking time, contact time, adsorbent dosage, initial MO concentration, temperature and solution pH.
Methyl Orange - BYJU'S
Methyl Orange is a weak acid that breaks down into orange neutral molecules when it comes into contact with water. The equilibrium is to the left in acidic conditions, and the concentration of neutral molecules is too poor to see the orange colour. Some general properties of methyl orange are tabulated below.
(PDF) Absorption and Fluorescence Spectra of Methyl Orange in Aqueous …
2012年3月1日 · This paper presents a spectroscopic study of methyl orange (C14H14N3SO3Na), a fl uorescent azo dye in aqueous solutions of concentrations between 10-3 M and 10-6 M by analyzing the...
Adsorption of Methyl Orange from Aqueous Solution on …
2011年10月26日 · In this study, we presented the efficiently adsorptive removal of organic dye, methyl orange (MO), from aqueous solution with the hydrothermal synthesized Mg–Al layered double hydroxide (LDH). The as-obtained product was characterized by X-ray diffraction (XRD), Fourier transformation infrared spectroscopy (FTIR), and scanning electron ...
Removal of Methyl Orange in Aqueous Solutions Using
2023年6月26日 · This study presents an efficient application of the Fenton reaction for the degradation of methyl orange (MO), utilizing a composite of hydrochloric acid-modified kaolinite supported nanosized zero-valent iron (mk-nZVI).