百里酚酞 - 维基百科，自由的百科全书
百里酚酞（英語： Thymolphthalein ）是一种酸碱指示剂。其变色范围为9.3-10.5，由无色变为蓝色。其二价阴离子的摩尔消光系数为38,000 M −1 cm −1 （595 nm）。 [1]
Thymolphthalein - Wikipedia
Thymolphthalein is a phthalein dye used as an acid–base indicator. Its transition range is around pH 9.3–10.5. Below this pH, it is colorless; above, it is blue. The molar extinction coefficient for the blue thymolphthalein dianion is 38,000 M −1 cm −1 at 595 nm. [2]
百里酚酞 - 百度百科
ThyMolphthalein; 5',5''-Diisopropyl-2',2''-dimethylphenolphthalein 别 名 麝香草酚酞 、 百里香酚酞 、 麝香草酚麸 、 3,3-双(4-羟基-5-异丙基-2-甲基苯基)-苯酞
Thymolphthalein | C28H30O4 | CID 31316 - PubChem
Thymolphthalein | C28H30O4 | CID 31316 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological activities, safety/hazards/toxicity information, supplier lists, and more.
How to Make Thymolphthalein pH Indicator - ThoughtCo
2020年1月10日 · Thymolphthalein is an acid-base indicator that changes color from colorless to blue. Below a pH of 9.3-10.5, it s colorless. Above this range, it is blue. These are instructions for making 100 mL of thymolphthalein pH indicator solution.
Indicators - Chemistry LibreTexts
2023年1月30日 · Thymolphthalein: Colorless: 9.4 - 10.6: Blue: Alizarin yellow R: Yellow: 10.1 - 12.0: Red: There is a separate file for this, and it can also be accessed from the Chemical Handbook menu. Example \(\PageIndex{1}\) Find an indicator for the titration of a 0.100 M solution of a weak acid \(\ce{HA}\) (\(K_a = 6.2 \times 10^{-6}\)) with 0.100 M ...
Thymolphthalein_化工百科 - ChemBK
中文名:麝香草酚酞,英文名:Thymolphthalein,CAS:125-20-2,化学式:C28H30O4,分子量:430.54,密度:0.92g/mLat 25°C,熔点:251-253°C(lit.),沸点:504.79°C (rough estimate),闪点:74°F,水溶性:insoluble,蒸汽压:0.002Pa at 90℃,折射率:1.6400 (estimate),MSDS.
How to Make Thymolphthalein pH Indicator - Science Notes …
2020年9月9日 · Thymolphthalein is a pH indicator that changes color from colorless to indigo blue. It is colorless below a pH of 9.3 to 10.5 and blue at more alkaline pH values. Here are instructions to make thymolphthalein pH indicator, a look at its uses, and information on where to buy it and how much it costs. Thymolphthalein Materials
Thymolphthalein - chemeurope.com
Thymolphthalein is an acid-base indicator. Its transition range is at approximately pH 9.3-10.5. Below this pH, it is colorless; above this pH, it is blue. Its molecular formula is C 28 H 30 O 4.
Thymolphthalein | pH 指示剂 | MCE - MCE-生物活性分子大师
Thymolphthalein is an electrochemically active dye due to the presence of thymol fragments. Thymolphthalein is a Phthalein dye used as an acid-base indicator. It is colourless in acid pH and is blue in basic pH [1] .