Bromochlorophenol blue
Structural formula | ||||||||||||||||
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General | ||||||||||||||||
Surname | Bromochlorophenol blue | |||||||||||||||
other names |
5 ', 5' '- dibromo-3', 3 '' - dichlorophenolsulfonphthalein |
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Molecular formula | C 19 H 10 Br 2 Cl 2 O 5 S | |||||||||||||||
Brief description |
red powder |
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properties | ||||||||||||||||
Molar mass | 581.98 g mol −1 | |||||||||||||||
Physical state |
firmly |
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Melting point |
230 ° C (decomposition) |
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solubility |
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safety instructions | ||||||||||||||||
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As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions . |
Bromochlorophenol blue is a chemical compound from the group of triphenylmethane dyes and is related to phenolphthalein . It is used as an indicator substance that changes its color from yellow to blue-violet in the pH range from 3.0 to 4.6. At a pH value of 3.0 the absorption range is 433–437 nm, at 4.5 it is 590–592 nm.
See also
Individual evidence
- ↑ a b c d Datasheet Bromochlorophenol Blue from Sigma-Aldrich , accessed on December 9, 2015 ( PDF ).
- ↑ a b Entry on bromochlorophenol blue. In: Römpp Online . Georg Thieme Verlag, accessed on December 9, 2015.
- ↑ Data sheet bromochlorophenol blue from Applicher, accessed on December 5, 2016.