319236

Phenolphthalein solution

0.5 wt. % in ethanol: water (1:1)

• Synonyma: C₂0H₁₄O₄; Phthalin;3,3-bis(4-hydroxyphenyl)-2-benzofuran-1-one
• Empirický vzorec (Hillův zápis): C₂₀H₁₄O₄
• Číslo CAS: 77-09-8
• Molekulová hmotnost: 318.32
• UNSPSC Code: 12171500
• NACRES: NA.47
• PubChem Substance ID: 24859151
• MDL number: MFCD00005913
• Beilstein/REAXYS Number: 284423

Vlastnosti

• form: liquid
• Quality Segment: 200
• concentration: 0.5 wt. % in ethanol: water (1:1)
• technique(s): titration: suitable
• color: colorless
• visual transition interval: 8.0-10, colorless to red
• mp: -35 °C
• density: 0.918 g/mL at 25 °C
• λmax: 552 nm
• application(s): diagnostic assay manufacturing; hematology; histology
• storage temp.: 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
• InChI key: KJFMBFZCATUALV-UHFFFAOYSA-N

Popis

General description

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.

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.

Application

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

Bezpečnostní informace

• pictograms: GHS02,GHS07
• signalword: Warning
• hcodes: H226,H319
• pcodes: P210 - P233 - P240 - P241 - P242 - P305 + P351 + P338
• Hazard Classifications: Eye Irrit. 2 - Flam. Liq. 3
• Skladovací třída: 3 - Flammable liquids
• wgk: WGK 3
• flash_point_f: 75.2 °F - closed cup
• flash_point_c: 24 °C - closed cup
• ppe: Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter