Thymolphthaleine ACS, Reag. Ph. Eur. indicateur
Marques : MerckTotal Evaluation: 0
Moyenne des Notes : 0.0 sur 5
Synonyme(s):
3,3-Bis(4-hydroxy-5-isopropyl-o-tolyl)phtalide
M-Clarity™ (Niveau de Qualité) = MQ200
Formule:
C₂₈H₃₀O₄ Poids moléculaire: 430.54 g/mol Point de fusion: 253 Température de stockage: Température ambiante |
Numéro MDL:
MFCD00005909 Numéro CAS: 125-20-2 EINECS: 204-729-7 Indice Merck: 12,09542 |
Résultats des tests de spécification
Appearance | White to almost white powder, eventually slightly yellowish. |
Identity (UV/VIS-Spectrum) | passes test |
Absorption maximum λmax. (buffer pH 10.5) | 592 - 596 nm |
Spec. Absorptivity A 1%/1cm (λmax; 0.01 g/l; buffer pH 10.5; calculated on anhydrous substance) | 800 - 900 |
Transition range (according to ACS) | passes test |
Transition range | pH 9.0 - pH 10.5 colourless - blue |
Loss on drying (110 °C) | ≤ 1 % |
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