Molecular formula :
nature : with four crystal water. Soluble in water, a blue fluorescent solution. Traditional methods of production of alpha-naphthylamine and concentrated sulfuric acid salt, and then 180 ~ 190 ° C baking dehydration, simultaneous molecular rearrangement within and prepared. The new method is based on dichloroethane as solvent, in Autoclave reaction from regular solvents and water in the system. Acid used for the production of dyes and direct dye intermediates. The system can also be used to take 1-naphthol-4-sulfonic acid.
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