319236

Phenolphthalein solution

0.5 wt. % in ethanol: water (1:1)

• Synonyme(s) : C₂0H₁₄O₄; Phthalin;3,3-bis(4-hydroxyphenyl)-2-benzofuran-1-one
• Formule empirique (notation de Hill): C₂₀H₁₄O₄
• Numéro CAS: 77-09-8
• Poids moléculaire : 318.32
• Numéro Beilstein : 284423
• Numéro MDL: MFCD00005913
• Code UNSPSC : 12171500
• ID de substance PubChem : 24859151
• Nomenclature NACRES : NA.47

Propriétés

• Forme: liquid
• Niveau de qualité: 200
• Concentration: 0.5 wt. % in ethanol: water (1:1)
• Technique(s): titration: suitable
• Couleur: colorless
• visual transition interval: 8.0-10, colorless to red
• Pf: -35 °C
• Densité: 0.918 g/mL at 25 °C
• λmax: 552 nm
• Application(s): diagnostic assay manufacturing; hematology; histology
• Température de stockage: room temp
• Chaîne SMILES: Oc1ccc(cc1)C2(OC(=O)c3ccccc23)c4ccc(O)cc4
• InChI: 1S/C20H14O4/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
• Clé InChI: KJFMBFZCATUALV-UHFFFAOYSA-N

Description

Description générale

Phenolphthalein is an acid base indicator. It is a weak acid, which is colorless in acidic solution and turns puce pink in alkaline solution. Phenolphthalein is genotoxic. It might cause oxidative damage and binds to estrogen receptors.

Phenolphthalein solution is a synthetic indicator. It is colorless in acidic and neutral conditions. Phenolphthalein gives pink color when added to a base, therefore it is considered as a base indicator.

Application

Phenolphthalein solution has been used to measure total titratable acids by titration method.

Informations sur la sécurité

• Pictogrammes: GHS02,GHS07
• Mention d'avertissement: Warning
• Mentions de danger: H226,H319
• Conseils de prudence: P210 - P233 - P240 - P241 - P242 - P305 + P351 + P338
• Classification des risques: Eye Irrit. 2 - Flam. Liq. 3
• Code de la classe de stockage: 3 - Flammable liquids
• Classe de danger pour l'eau (WGK): WGK 3
• Point d'éclair (°F): 75.2 °F - closed cup
• Point d'éclair (°C): 24 °C - closed cup
• Équipement de protection individuelle: Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter