Phenolphthalein Disodium Salt
[CAS# 518-51-4]

Identification

• Classification: Biochemical >> Biochemical reagent >> Acid-base indicator
• Name: Phenolphthalein Disodium Salt
• Synonyms: Disodium 4-[1-(4-Oxidophenyl)-3-Oxo-Isobenzofuran-1-Yl]Phenolate; Disodium 4-[1-(4-Oxidophenyl)-3-Oxo-1-Isobenzofuranyl]Phenolate; Disodium 4-[3-Keto-1-(4-Oxidophenyl)Isobenzofuran-1-Yl]Phenolate
• Molecular Formula: C₂₀H₁₂Na₂O₄
• Molecular Weight: 362.29
• CAS Registry Number: 518-51-4
• EINECS: 208-254-6
• SMILES: C1=CC=CC2=C1C(OC2=O)(C3=CC=C([O-])C=C3)C4=CC=C([O-])C=C4.[Na+].[Na+]
• InChI: 1S/C20H14O4.2Na/c21-15-9-5-13(6-10-15)20(14-7-11-16(22)12-8-14)18-4-2-1-3-17(18)19(23)24-20;;/h1-12,21-22H;;/q;2*+1/p-2
• InChIKey: GCZXTTJWUAJLNQ-UHFFFAOYSA-L

Properties

• Boiling point: 557.8°C at 760 mmHg (Cal.)
• Flash point: 206.5°C (Cal.)