Tymolftalin ACS, Reag. Ph. Eur. indicator
Leverantör: Merck
Synonyms:
3,3-Bis(4-hydroxy-5-isopropyl-o-tolyl)phthalide, 3,3-Bis(4-hydroxy-5-isopropyl-2-methylphenyl)isobenzofuran-1(3H)-one
M-Clarity™ quality level = MQ200
1.08175.0005
1.08175.0025
1.08175.0100
1.08175.0005EA
1110
SEK
1.08175.0005
1.08175.0025
1.08175.0100
Tymolftalin ACS, Reag. Ph. Eur. indicator
Tymolftalin
Formel:
C₂₈H₃₀O₄ MW: 430,54 g/mol Smältpunkt: 253 °C Storage Temperature: Omgivande |
MDL Number:
MFCD00005909 CAS nummer: 125-20-2 EINECS: 204-729-7 Merck Index: 12,09542 |
Specifikation testresultat
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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