Chlorophenol red

3 ', 3 '' - Dichlorphenolsulfonphthalein

Dark red to brown solid

Fixed

261 ° C

Insoluble in water

Attention

Template: Infobox chemical / molecular formula search available

Chlorophenol red is a chemical compound from the group of triphenylmethane dyes, and is related to the phenolphthalein. It is used as indicator substance, which changes color from purple to yellow in the pH range of 4.8 to 6.4. At a pH value of 4.8 of the absorption range is 432-436 nm, 574-578 nm at 6.4 at