Fenolftalein 0,5 wt, % in ethanol: water (1:1), Sigma-Aldrich®

Leverandør: SIGMA ALDRICH MICROSCOPY
Warning

Synonymer: 3,3-Bis(4-hydroxyphenyl)isobenzofuran-1(3H)-one

M-Clarity™ quality level = MQ200

319236-100ML 319236-6X100ML
319236-100MLEA 332 NOK
319236-100ML 319236-6X100ML
Fenolftalein 0,5 wt, % in ethanol: water (1:1), Sigma-Aldrich®
Fenolftalein

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.


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

Formel: C₂₀H₁₄O₄
MW: 318,33 g/mol
Smeltepunkt: –35 °C
Tetthet: 0,918 g/ml (25 °C)
Flash punkt: 24 °C (closed cup)
Lagringstemperatur: Room Temperature
MDL nummer: MFCD00005913
CAS-nummer: 77-09-8
EINECS: 201-004-7
FN: 1170
ADR: 3,III
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Spesifikasjon Testresultater

Appearance (Colour) Colourless
Appearance (Form) Liquid
Visual Interval
pH 8.0 Colorless
Pass
Visual Interval
pH 8.2 Pale Pink
Pass
Visual Interval
pH 8.6 Pink
Pass
Visual Interval
pH 10.0 Red
Pass

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