Phenolphthaline
Structural formula | |||||||||||||||||||
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General | |||||||||||||||||||
Surname | Phenolphthaline | ||||||||||||||||||
other names |
2- [bis (4-hydroxyphenyl) methyl] benzoic acid ( IUPAC ) |
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Molecular formula | C 20 H 16 O 4 | ||||||||||||||||||
Brief description |
White dust |
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properties | |||||||||||||||||||
Molar mass | 320.34 g mol −1 | ||||||||||||||||||
Physical state |
firmly |
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Melting point |
235 ° C |
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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 . |
Phenolphthalin is a chemical compound from the group of aromatic hydrocarbons . It arises from the reduction of phenolphthalein with zinc in alkaline solutions and is used in the Kastle-Meyer test to indicate suspected blood traces and to detect peroxides .
literature
- DF Bender, AW Breidenbach: Modification of the Phenolphthalin Method for the Determination of Total Oxidants , in: Anal. Chem. , 1963 , 35 (3), pp. 417-418, doi : 10.1021 / ac60196a051 .
Individual evidence
- ^ Phenolphthaline (SCBT) .
- ↑ Entry on phenolphthaline at TCI Europe, accessed on March 14, 2010.
- ↑ Phenolphthalin data sheet from Sigma-Aldrich , accessed on May 29, 2011 ( PDF ).
- ↑ Th. N. Kleinert, F. Sieber: About the formation and detection of small amounts of peroxide on cellulose fibers , in: Holzforschung - International Journal of the Biology, Chemistry, Physics and Technology of Wood , 1955 , Volume 9, Issue 1, p. 15– 17, doi : 10.1515 / revised 1955.9.1.15 .