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单词 methyl orange
释义 methyl orange
noun
Usage: sometimes capitalized M&O
: a basic azo dye (CH3)2NC6H4N . NC6H4SO3Na which is made by coupling diazotized sulfanilic acid with dimethylaniline, is used chiefly as an acid-base indicator, and whose dilute solution is yellow when neutral and pink when acid — see dye table I (under Acid Orange 52); compare helianthin
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更新时间:2024/11/14 21:05:33