Phénolphtaléine 0,5 wt, % in ethanol: water (1:1), Sigma-Aldrich®
Marques : SIGMA ALDRICH MICROSCOPYTotal Evaluation: 0
Moyenne des Notes : 0.0 sur 5
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Attention
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M-Clarity™ (Niveau de qualité) = MQ200
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.
Formule:
C₂₀H₁₄O₄ Point de fusion: –35 °C Densité: 0,918 g/ml (25 °C) Température de stockage: Room Temperature |
Numéro MDL:
MFCD00005913 Numéro CAS: 77-09-8 EINECS: 201-004-7 UN: 1170 ADR: 3,III |
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Résultats des tests de spécification
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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