Pyranine occurs as yellow to green-yellow powder with its melting point 62-63.5 °C(lit.) and boiling point 171-178 °C at 10 mm Hg(lit.).Pyranine is soluble in water and has applications as a coloring agent, biological stain, optical detecting reagent, and a pH indicator.One example would be the measurement of intracellular pH.Its purity is not less than 85.0%(E).The specification is 25G or 500G.
Pyranine is a hydrophilic, pH-sensitive fluorescent dye from the group of chemicals known as arylsulfonates. Pyranine is soluble in water and has applications as a coloring agent, biological stain, optical detecting reagent, and a pH indicator. One example would be the measurement of intracellular pH. Pyranine is also found in highlighters and soaps
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