Difference between revisions of "Juglone"
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5-hydroxy-1,4-naphthoquinone; CI 7550; Natural Brown 7; nucin; regianin; juglona (Esp., Port.) | 5-hydroxy-1,4-naphthoquinone; CI 7550; Natural Brown 7; nucin; regianin; juglona (Esp., Port.) | ||
| − | == | + | == Physical and Chemical Properties == |
Yellow crystals. Absorption max = 520 nm | Yellow crystals. Absorption max = 520 nm | ||
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|} | |} | ||
| − | == | + | == Resources and Citations == |
* Richard S. Lewis, ''Hawley's Condensed Chemical Dictionary'', Van Nostrand Reinhold, New York, 10th ed., 1993 | * Richard S. Lewis, ''Hawley's Condensed Chemical Dictionary'', Van Nostrand Reinhold, New York, 10th ed., 1993 | ||
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* ''The Merck Index'', Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983 Comment: entry 5282 | * ''The Merck Index'', Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983 Comment: entry 5282 | ||
| − | * ''Encyclopedia Britannica'', http://www.britannica.com Comment: "Amensalism." | + | * ''Encyclopedia Britannica'', http://www.britannica.com Comment: "Amensalism." (Accessed 1 Sept. 2004). |
[[Category:Materials database]] | [[Category:Materials database]] | ||
Revision as of 11:50, 28 October 2020
Description
A brown dye obtained from the husks of walnuts, Juglans regia. Juglone also acts as a natural Herbicide, providing a plant-free region for the seed to grow.
See also Walnut shell.
Synonyms and Related Terms
5-hydroxy-1,4-naphthoquinone; CI 7550; Natural Brown 7; nucin; regianin; juglona (Esp., Port.)
Physical and Chemical Properties
Yellow crystals. Absorption max = 520 nm
Soluble in chloroform, benzene, alcohol, ether.
Alkaline solutions turn a reddish-purple color
| Composition | C10H6O3 |
|---|---|
| Melting Point | 155 |
| Molecular Weight | 174.16 |
| CAS | 451-39-0 |
Resources and Citations
- Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
- John S. Mills, Raymond White, The Organic Chemistry of Museum Objects, Butterworth Heineman, London, 2nd ed., 1994
- The Merck Index, Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983 Comment: entry 5282
- Encyclopedia Britannica, http://www.britannica.com Comment: "Amensalism." (Accessed 1 Sept. 2004).