P5631

o-Cresolphthalein Complexone

powder

• Synonym(s): o-Cresolphthalein-3′,3′′-bis-methyleneiminodiacetic acid, o-Cresolphthalexon, Metal phthalein, Phthalein purple, Xylenylphthalein-bisiminodiacetic acid
• Empirical Formula (Hill Notation): C₃₂H₃₂N₂O₁₂
• CAS Number: 2411-89-4
• Molecular Weight: 636.60
• Beilstein/REAXYS Number: 381994
• EC Number: 219-318-8
• MDL number: MFCD00005911
• UNSPSC Code: 12171500
• PubChem Substance ID: 24898682
• NACRES: NA.47

Properties

• form: powder
• Quality Level: 200
• color: white to off-white
• mp: 181-185 °C (dec.) (lit.)
• solubility: methanol: 1 mg/mL
• suitability: suitable for determination of calcium
• application(s): diagnostic assay manufacturing; hematology; histology
• storage temp.: room temp
• SMILES string: Cc1cc(cc(CN(CC(O)=O)CC(O)=O)c1O)C2(OC(=O)c3ccccc23)c4cc(C)c(O)c(CN(CC(O)=O)CC(O)=O)c4
• InChI: 1S/C32H32N2O12/c1-17-7-21(9-19(29(17)43)11-33(13-25(35)36)14-26(37)38)32(24-6-4-3-5-23(24)31(45)46-32)22-8-18(2)30(44)20(10-22)12-34(15-27(39)40)16-28(41)42/h3-10,43-44H,11-16H2,1-2H3,(H,35,36)(H,37,38)(H,39,40)(H,41,42)
• InChI key: IYZPEGVSBUNMBE-UHFFFAOYSA-N

Description

General description

o-Cresolphthalein Complexone is a pH indicator dye commonly used for the calorimetric determination of calcium in serum.

Application

o-Cresolphthalein Complexone has been used in the estimation of calcium in serum samples based on the reaction of Ca²⁺ with o-cresolphthalein complexone in an alkaline solution.

Safety Information

• Storage Class: 11 - Combustible Solids
• wgk_germany: WGK 3
• flash_point_f: Not applicable
• flash_point_c: Not applicable
• ppe: Eyeshields, Gloves, type N95 (US)