phthalein dye

См. также в других словарях:

• phthalein dye — noun see phthalein …   Useful english dictionary

• phthalein — ˈthalēə̇n, āl , ˌlēn noun also phthalein dye ( s) Etymology: International Scientific Vocabulary phthal + ein : any of a group of xanthene dyes (as phenolphthalein, fluorescein, rhodamine) that are intensely colored in alkaline solution and are… …   Useful english dictionary

• xanthene dye — noun : any of a group of brilliant fluorescent yellow to pink to bluish red dyes characterized by the presence of the xanthene nucleus, known sometimes in colorless as well as colored forms, and used chiefly in dyeing textile fibers, in coloring… …   Useful english dictionary

• gallein — Structurally related to fluorescein and used as an aniline dye indicator, turning rose red above pH 6.6, yellowish brown below pH 4. SYN: pyrogallolphthalein. * * * gal·lein gal ē ən, gal .ēn n a metallic green crystalline phthalein dye C20H12O7… …   Medical dictionary

• gallein — ˈgalēə̇n, ˈgȯl noun ( s) Etymology: International Scientific Vocabulary gall + phthalein; originally formed in German : a metallic green crystalline phthalein dye C20H12O7 made from phthalic anhydride and gallic acid or pyrogallol and used… …   Useful english dictionary

• gallein — [gal′ē in, gal′ēn] n. 〚 GALL(IC ACID) + (PHTHAL)EIN〛 a violet dye, C20H12O7, formed by heating pyrogallol with phthalic anhydride, used as an indicator and as a mordant dye * * * gal·lein (gălʹē ĭn, gălʹēn ) n. A brown or metallic green dye,… …   Universalium

• resorcinolphthalein — noun a yellow dye that is visible even when highly diluted; used as an absorption indicator when silver nitrate solution is added to sodium chloride in order to precipitate silver chloride (turns pink when no chloride ions are left in solution… …   Useful english dictionary

• Adolf von Baeyer — Infobox Scientist name = Adolf von Baeyer image+size = 180px caption = Johann Friedrich Wilhelm Adolf von Baeyer in 1905 birth date = birth date|1835|10|31|mf=y birth place = Berlin, Germany nationality = Germany death date = death date and… …   Wikipedia

• Complexometric indicator — A complexometric indicator is an ionochromic dye that undergoes a definite color change in presence of specific metal ions.[1] It forms a weak complex with the ions present in the solution, which has a significantly different color from the form… …   Wikipedia