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Bromocresol green (BCG) is a dye of the triphenylmethane family (triarylmethane dyes). It belongs to a class of dyes called sulfonephthaleins. [4] It is used as a pH indicator in applications such as growth mediums for microorganisms and titrations. In clinical practise, it is commonly used as a diagnostic technique.
SDS: Main hazards: flammable, ingestion and inhalation toxicity hazard Flash point: 81 °C c.c. 86 °C 86 °C c.c. GHS pictograms: RTECS number GO6300000 GO6125000 GO6475000 Related compounds Related phenols: xylenols: Related compounds bromocresol green, cresol red: Except where noted otherwise, data are given for
Bromophenol is also used as a colour marker to monitor the process of agarose gel electrophoresis and polyacrylamide gel electrophoresis.Since bromophenol blue carries a slight negative charge at moderate pH, it will migrate in the same direction as DNA or protein in a gel; the rate at which it migrates varies according to gel density and buffer composition, but in a typical 1% agarose gel in ...
The general carbon skeleton of bromothymol blue is common to many indicators including chlorophenol red, thymol blue, and bromocresol green. [ 2 ] The presence of one moderate electron-withdrawing group ( bromine atom) and two moderate donating groups (alkyl substituents) are responsible for bromothymol blue's active indication range from a pH ...
o-Cresolphthalein is a phthalein dye used as a pH indicator in titrations. It is insoluble in water but soluble in ethanol. Its solution is colourless below pH 8.2, and purple above 9.8. Its molecular formula is C 22 H 18 O 4. It is used medically to determine calcium levels in the human body, or to synthesize polyamides or polyimides.
Absorption spectra of bromocresol green at different stages of protonation. An indicator may be used to obtain quite precise measurements of pH by measuring absorbance quantitatively at two or more wavelengths. The principle can be illustrated by taking the indicator to be a simple acid, HA, which dissociates into H + and A −. HA ⇌ H + + A −
Fatty fish . Salmon, tuna, cod, anchovies and sardines are all rich in omega-3 fatty acids, especially docosahexaenoic acid or DHA, which is found in large quantities in the brain.
Bromocresol purple (BCP) or 5′,5″-dibromo-o-cresolsulfophthalein, is a dye of the triphenylmethane family (triarylmethane dyes) and a pH indicator. It is colored yellow below pH 5.2, and violet above pH 6.8. In its cyclic sulfonate ester form, it has a pK a value of 6.3, and is usually prepared as a 0.04% aqueous solution. [1]