. . "0"^^ . . . . . . "a laxative used in many preparations under various trade names; also used as an acid-base indicator in titrations involving weak acids and strong bases because it is brilliant red at high alkalinity and colorless below pH 8"@en-us . . "103922109"^^ . . "phenolphthalein"^^ . "03922109-n"^^ . . "phenolphthalein"@en-us . . . "103774197"@en-us . . "0"^^ .