Water content of chlorophyll hydrate |
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| Authors: | Herbert Blaha Peter Kis Helmuth Springer-Lederer |
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| Affiliation: | 1. Institute of Inorganic Chemistry, University of Vienna, Vienna, Austria.;2. Institute of Physical Chemistry, University of Vienna, Vienna, Austria. |
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| Abstract: | Thermogravimetry shows that polycrystalline chlorophyll a is a chlorophyll dihydrate. Neither thermogravimetry nor differential thermal analysis indicates the existence of a stable chl a monohydrate. Moreover it is found that larger amounts of water-free chlorophyll a (>50 mg) cannot be prepared by application of vacuum and heat in a reasonable time, if chemical decomposition is to be avoided. Thin layers of polycrystalline chlorophyll a undergo spectroscopic changes depending on temperature and vacuum. |
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