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o-Cresolphthalein, indicator

- Synonyms: 3,3-Bis(4-hydroxy-3-methylphenyl)-1(3H)-isobenzofuranoner- C22H18O4r- M = 346,38 g/molr- CAS [596-27-0]r- EINECS-No.: 209-881-8r- Solub. in water: (20 ºC): slightly solubler- Melting point: 223 - 225 ºCr- Tariff number: 2932 20 90 90r- Applications: laboratory reagent, indicator.rrSPECIFICATIONSrpH range (colourless to red) : 8,2 - 9,8rinsoluble in C2H5OH : passes testrAbsorption maximum l (pH =11,3): 565 - 569 nm rAbsorptivity (A1%/1 cm; l max.): >1500 rrelated substances (TLC): passes testr