Bromocresol Green

4,4′-(3H-2,1-Benzoxathiol-3-ylidene)bis(2,6-dibromo-m-cresol) S,S-dioxide; C₂₁H₁₄Br₄O₅S = 698 (76-60-8)

Brownish-white powder, slightly soluble in water, soluble in ethanol (96%) and in dilute solutions of alkali hydroxides.