Bromothymol blue

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Description

An acid-base indicator dye. Bromothymol blue gives a yellow color below pH 6.0 and blue color above pH 7.6.

Synonyms and Related Terms

Bromthymolblau (Deut.); bromthymol blue; bromthymol blue sulfone; 3,3'-dibromothymolsulfonphthalein;

Risks

  • MerckMillipore: SDS

Physical and Chemical Properties

Soluble in ethanol, alkali solutions. Slightly soluble in water. Insoluble in ligroin.

Composition C27H28Br2O5S
CAS 76-59-5
Molecular Weight mol. wt. = 624.39

Resources and Citations

  • Thomas Gregory, The Condensed Chemical Dictionary, Reinhold Publishing, New York, 3rd ed., 1942
  • G.S.Brady, Materials Handbook, McGraw-Hill Book Co., New York, 1971
  • The Merck Index, Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983 Comment: entry 1469
  • Sigma Dyes, Stains and Natural Pigments, Infrared Library, Nicolet, 1991-1995 Comment: OMNIC: formula= C27H28Br2O5S, CAS= 76-59-5

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