phenolsulphonphthaleinphenolsulfonphthaleinn.
/ˌfiːnɒlsʌlfɒnˈ(f)θeɪlɪɪn/, /ˌfiːnɒlsʌlfɒnˈ(f)θalɪɪn/, /ˌfiːnɒlsʌlfɒnˈ(f)θeɪlɪiːn/, /ˌfiːnɒlsʌlfɒnˈ(f)θalɪiːn/, U.S. /ˈˌfiˌnɔlˌsəlfənˈθeɪˌli(ə)n/, /ˈˌfiˌnɑlˌsəlfənˈθeɪˌli(ə)n/ Chemistry.
= phenol red n. at phenol n. Compounds 2.
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the world > matter > chemistry > chemical tests > indicators > [noun] > pH indicators
phenolphthalein1875
phenolsulphonphthalein1898
phenol red1916
nitramine1922
1898 M. D. Sohon in Amer. Chem. Jrnl. 20 263 Phenolsulphonphthalein, C19H14SO5..was obtained as a bright red crystalline powder, somewhat soluble in water.
1928 S. R. Damon Food Infections & Food Intoxications viii. 105 Tests of renal function by the phenolsulphonphthalein method should be made.
1974 D. H. Kay in W. O. Foye Princ. Med. Chem. xxxvii. 816/2 This dye is also known as phenol red and is official as phenolsulfonphthalein (U.S.P.).
2003 Jrnl. Surg. Res. 115 18 Histopathological examination of the terminal ileum and intestinal permeability test using phenolsulfonphthalein was also performed.
This entry has been updated (OED Third Edition, December 2005; most recently modified version published online March 2022).
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n.1898