o-Cresolphthalein complexone, indicator grade

CAS: 2411-89-4

Ref. 02-L03859

Product Information

• Name: o-Cresolphthalein complexone, indicator grade
• Synonyms: O-cresolphthalein complexone, 1,3-Dihydro-3-Oxoisobenzofuran-1-Ylidenebis(6-Hydroxy-5-Methyl-M-Phenylenemethylenenitrilo)Tetra-Acetic Acid, 2,2',2'',2'''-{(3-Oxo-1,3-Dihydro-2-Benzofuran-1,1-Diyl)Bis[(6-Hydroxy-2,5-Dimethylbenzene-3,1-Diyl)Methanediylnitrilo]}Tetraacetic Acid, 2,2',2'',2'''-{(3-Oxo-1,3-Dihydro-2-Benzofuran-1,1-Diyl)Bis[(6-Hydroxy-5-Methylbenzene-3,1-Diyl)Methanediylnitrilo]}Tetraacetic Acid, 2,2'-[(3-Oxo-1,3-Dihydro-2-Benzofuran-1,1-Diyl)Bis{(6-Hydroxy-5-Methylbenzene-3,1-Diyl)Methanediyl[(Carboxymethyl)Imino]}]Diacetate (Non-Preferred Name), 2-[[5-[1-[3-[[Carboxylatomethyl(carboxymethyl)azaniumyl]methyl]-4-hydroxy-5-methylphenyl]-3-oxo-2-benzofuran-1-yl]-2-hydroxy-3-methylphenyl]methyl-(carboxymethyl)azaniumyl]acetate, 3,3′-Bis[N,N-bis(carboxymethyl)aminomethyl]-o-cresolphthalein, 3,3′-Bis[N,N-di(carboxymethyl)aminomethyl]-o-cresolphthalein, Cresolphthalein complexon, Cresolphthalexon, Glycine, N,N′-[(3-oxo-1(3H)-isobenzofuranylidene)bis[(6-hydroxy-5-methyl-3,1-phenylene)methylene]]bis[N-(carboxymethyl)-, N,N′-[(3-Oxo-1(3H)-isobenzofuranylidene)bis[(6-hydroxy-5-methyl-3,1-phenylene)methylene]]bis[N-(carboxymethyl)glycine], NSC 298195, Phenolphthalein, 3′,3′′-bis[[bis(carboxymethyl)amino]methyl]-5′,5′′-dimethyl-, Phthalein Complexon, Phthalein Purple, Phthalein complexone, o-Cresolphthalein complexon, o-Cresolphthalexon, o-Cresolphthalexone, o-Cresolphthalexon~Phthalein complexone

Description

Indicator for complexometric titration of Mg, Ca, Sr and Ba. It is used as an alkaline earth metal ion indicator. Suggested to be colorless at pH 11, but turns pink in the presence of alkaline earth metals. Also utilized in an auto analyzer to determine serum calcium. This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Scientific Chemicals.

• Brand: Alfa Aesar By Thermo Fisher Scientific

Chemical properties

• Molecular weight: 636.61
• Formula: C₃₂H₃₂N₂O₁₂
• Color/Form: White to cream, Powder
• InChI key: IYZPEGVSBUNMBE-UHFFFAOYSA-N