Wurster's blue
Chemical compound
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Wurster's blue is the trivial name given to the radical cation of the colorless chemical N, N, N′, N′-tetramethyl-p-phenylenediamine, also known as TMPD. Wikipedia
Formula: C10H16N2
Molar mass: 164.25 g/mol
Density: 992 kg/m³
Boiling point: 500°F (260°C)
Solubility: alcohol, chloroform
Acidity (pKa): 6.35
Appearance: Colourless crystalline solid