Bromothymol Blue IND Grade Reagent
White or cream crystals. It is soluble in ethanol, ether, methanol and dilute aqueous alkali solution, slightly soluble in benzene, toluene and xylene and water, almost insoluble in petroleum ether. The melting point is 200-202 °C. The maximum absorption wavelength is 420 nm.
Acid-base indicator, pH: 6.0 (yellow) ~ 7.6 (blue). Adsorption indicator.
Item of Analysis
pH discoloration domain
Mass absorption coefficient,α/ (L/cm·g)
Solubility in ethanol
to pass test
Residue on ignition(as SO4) ,%
Not a hazardous substance or mixture.