Thymolphthalein ACS, Reag. Ph. Eur. indicator

Supplier: 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 76.3 GBP
1.08175.0005 1.08175.0025 1.08175.0100
Thymolphthalein ACS, Reag. Ph. Eur. indicator
Thymolphthaleine
Formula: C₂₈H₃₀O₄
MW: 430,54 g/mol
Melting Pt: 253 °C
Storage Temperature: Ambient
MDL Number: MFCD00005909
CAS Number: 125-20-2
EINECS: 204-729-7
Merck Index: 12,09542

Order Now

Specification Test Results

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 %

Learn more

About VWR

Avantor is a vertically integrated, global supplier of discovery-to-delivery solutions for...

Learn more About VWR