
Hóa chất Thymolphthalein Merck 1081750100 (C₂₈H₃₀O₄, chai thủy tinh 100g) DEEP52 https://yeuhangduc.vn/
19,020,540₫
Mô tả
CAS #: 125-20-2
EC number: 204-729-7
Hill Formula: C₂₈H₃₀O₄
Molar Mass: 430.54 g/mol
Identity (UV/VIS-Spectrum): passes test
Appearance: White to almost white powder, eventually slightly yellowish.
Clarity of solution (1 g/l; ethanol): 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: pH 9.0 - pH 10.5 colourless - blue
Transition range (according to ACS): passes test
Transition interval (according Reag. Ph. Eur.): passes test
Loss on drying (110 °C): ≤ 1 %
