| Hazard Information | Back Directory | [Preparation]
2-Formyl-5-hydroxybenzenesulfonic acid?(1 Moore) and 3-(Ethyl(phenyl)amino)methyl)benzenesulfonic acid (2 Moore) condensation, oxidation, and then into aluminum salt deposit color. | [Properties and Applications]
blue light green. Soluble in water for blue light green, soluble in ethanol for blue light green. The strong sulfuric acid for dark orange, diluted dark for; In strong hydrochloric acid or nitric acid are all the orange solution; In 10% of sodium hydroxide solution for light blue. |
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