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the world > matter > chemistry > chemical tests > indicators > [noun] > pH indicators (7)
phenolphthalein1875

A crystalline solid, C20H14O4, which is the simplest phthalein and is used in alcoholic solution as an indicator in the pH range 8 (colourless) to 10…

phenolsulphonphthalein1898

= phenol red n. at phenol, n. compounds 2.

phenol red1916

a red crystalline solid, C19H14O5S, which is used as a pH indicator in the range 6.7 (yellow) to 8.3 (red), and in medicine is given intravenously…

nitramine1922

spec. An aromatic compound of this class, (CH3)(NO2)NC6H2(NO2)3, used as a pH indicator and in explosives.

Subcategories:

— acid or base indicators (3)
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更新时间:2024/12/24 20:58:57