The spectrophotometric determination of
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M. Ariel; J. Manka
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Article
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1961
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Elsevier Science
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English
โ 585 KB
## REAGENTSAND SOLUTIONS (I) Ortho-dianisidine dihydrochloride (3,3'-dimethoxybenzidine). This is a crystalline solid, soluble in water and acids. Its reduced form is colorless, while its oxidized form is red in strongly acid solutions and green in solutions whose pH is higher than 2.1. The formal