Ortho-nitrophenol



[awr-thoh-nahy-truh-fee-nawl, -nol] /ˌɔr θoʊˌnaɪ trəˈfi nɔl, -nɒl/

noun
1.
See under (def 2).
[nahy-truh-fee-nawl, -nol] /ˌnaɪ trəˈfi nɔl, -nɒl/
noun, Chemistry.
1.
any compound derived from by the replacement of one or more of its ring hydrogen atoms by the nitro group.
2.
any of three water-soluble, crystalline isomers of such a derivative, having the formula C 6 H 5 NO 3 , occurring in yellow (ortho-nitrophenol) pale-yellow (meta-nitrophenol) and yellowish (para-nitrophenol) solids, used chiefly as intermediates in organic synthesis and as indicators.

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