By access to information,determination methods of alumina are mainly including chrome azurol S method and aluminon method.
经查阅资料，测定铝的主要方法有铬天青S法和铝试剂法。
Azurol
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1,5-Dihydroxynaphthalene
1,5-Dihydroxynaphthalene is an organic compound with the formula C10H6(OH)2. It is one of several isomers of dihydroxynaphthalene. It exists as colorless crystals that are soluble in polar organic solvents. It is a precursor to certain dyes.
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