319236

Phenolphthalein -Lösung

0.5 wt. % in ethanol: water (1:1)

• Synonym(e): C₂0H₁₄O₄; Phthalin;3,3-bis(4-hydroxyphenyl)-2-benzofuran-1-one
• Empirische Formel (Hill-System): C₂₀H₁₄O₄
• CAS-Nummer: 77-09-8
• Molekulargewicht: 318.32
• Beilstein: 284423
• MDL-Nummer: MFCD00005913
• UNSPSC-Code: 12171500
• PubChem Substanz-ID: 24859151
• NACRES: NA.47

Eigenschaften

• Form: liquid
• Qualitätsniveau: 200
• Konzentration: 0.5 wt. % in ethanol: water (1:1)
• Farbe: colorless
• visual transition interval: 8.0-10, colorless to red
• mp (Schmelzpunkt): -35 °C
• Dichte: 0.918 g/mL at 25 °C
• λmax: 552 nm
• Anwendung(en): diagnostic assay manufacturing; hematology; histology
• Lagertemp.: room temp
• SMILES String: 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
• InChIKey: KJFMBFZCATUALV-UHFFFAOYSA-N

Beschreibung

Allgemeine Beschreibung

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.

Anwendung

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

Sicherheitshinweise

• Piktogramme: GHS02,GHS07
• Signalwort: Warning
• H-Sätze: H226,H319
• P-Sätze: P210 - P233 - P240 - P241 - P242 - P305 + P351 + P338
• Gefahreneinstufungen: Eye Irrit. 2 - Flam. Liq. 3
• Lagerklassenschlüssel: 3 - Flammable liquids
• WGK: WGK 3
• Flammpunkt (°F): 75.2 °F - closed cup
• Flammpunkt (°C): 24 °C - closed cup
• Persönliche Schutzausrüstung: Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter