Difference between revisions of "Ellagic acid"
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== Description == | == Description == | ||
| − | A cream-color powder formed as a metabolite from the oxidation of [http://cameo.mfa.org/materials/fullrecord.asp?name=gallic | + | A cream-color powder formed as a metabolite from the oxidation of [http://cameo.mfa.org/materials/fullrecord.asp?name=gallic%20acid gallic acid]. Ellagic acid occurs naturally in [http://cameo.mfa.org/materials/fullrecord.asp?name=gall galls] as well as [http://cameo.mfa.org/materials/fullrecord.asp?name=leather leather] that have been tanned with galls. It was isolated as a distinct compound by Chevreul in 1815. Ellagic acid is used as a [http://cameo.mfa.org/materials/fullrecord.asp?name=tannin tannin] and as a pale-green to gray [http://cameo.mfa.org/materials/fullrecord.asp?name=dye dye] with [http://cameo.mfa.org/materials/fullrecord.asp?name=iron iron] [http://cameo.mfa.org/materials/fullrecord.asp?name=mordant mordants]. It is being studied as a cancer preventing drug. |
== Synonyms and Related Terms == | == Synonyms and Related Terms == | ||
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* ''The Merck Index'', Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983 Comment: entry | * ''The Merck Index'', Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983 Comment: entry | ||
| − | * | + | * Matt Roberts, Don Etherington, ''Bookbinding and the Conservation of Books: a Dictionary of Descriptive Terminology'', U.S. Government Printing Office, Washington DC, 1982 |
| − | * | + | * F. Crace-Calvert, ''Dyeing and Calico Printing'', Palmer & Howe, London, 1876 Comment: p. 321 |
[[Category:Materials database]] | [[Category:Materials database]] | ||
Revision as of 06:30, 24 July 2013
Description
A cream-color powder formed as a metabolite from the oxidation of gallic acid. Ellagic acid occurs naturally in galls as well as leather that have been tanned with galls. It was isolated as a distinct compound by Chevreul in 1815. Ellagic acid is used as a tannin and as a pale-green to gray dye with iron mordants. It is being studied as a cancer preventing drug.
Synonyms and Related Terms
benzoaric acid; bezoardic acid; 4,4',5,5',6,6'-hexahydrodiphenic acid 2,6,2'6'-dilactone
Other Properties
Soluble in alkali and pyridine. Slightly soluble in water or ethanol. Insoluble in ether.
UV max 366, 255 nm
| Composition | C14H6O8 |
|---|---|
| CAS | 476-66-4 |
| Melting Point | >300 |
| Molecular Weight | mol. wt.=302.19 |
Hazards and Safety
Fisher Scientific: MSDS
Authority
- The Merck Index, Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983 Comment: entry
- Matt Roberts, Don Etherington, Bookbinding and the Conservation of Books: a Dictionary of Descriptive Terminology, U.S. Government Printing Office, Washington DC, 1982
- F. Crace-Calvert, Dyeing and Calico Printing, Palmer & Howe, London, 1876 Comment: p. 321