{{Short description|Bile from the gallbladder of a cow}} {{more citations section|date=March 2026}} {{Expand French|Fiel (peinture)}} '''Ox gall''' (also spaced '''oxgall''') is bile, also known as "gall", is a liver secretion obtained from cows, it is an ingredient in bile soap and mixed with alcohol and used as the wetting agent in paper marbling, engraving, lithography, and watercolor painting.<ref>{{cite book | last=Piva | first=Gino | title=Manuale pratico di tecnica pittorica: enciclopedia ricettario per tutti gli artisti, pittori, dilettanti, allievi delle accademie di belle arti e delle scuole artistiche | publisher=HOEPLI EDITORE | date=1984 | isbn=978-88-203-0459-1 | url=https://books.google.com/books?id=5S5H0-yRGT8C&pg=PA17&lpg=PA17&source=bl&sa=X| language=it | access-date=2026-03-03 | page=}}</ref> <ref>{{Cite book |last=SCHNAUSS |first=JULIUS |title=Collotype and Photo-Lithography |publisher=ILIFFE AND SON |year=1889 |location=London|url=https://www.gutenberg.org/files/49866/49866-h/49866-h.htm}}</ref>It is a greenish-brown liquid mixture containing cholesterol, lecithin, taurocholic acid, and glycocholic acid.
In the 18th century it was discovered that ox gall had degreasing properties and was effective at removing protein based stains.<ref>{{Cite web |title=Effective Ox Gall Anti Stain Soap for All Your Stain Removal Needs |url=https://www.naturalfrenchsoap.com/blog/effective-ox-gall-anti-stain-soap-for-all-your-stain-removal-needs |access-date=2026-05-14 |website=The Natural French Soap Company |language=en}}</ref>
== References == {{reflist}}
== External links == * http://www.neogen.com/acumedia/pdf/ProdInfo/7216_PI.pdf * http://www.usbio.net/item/O8175
Category:Animal glandular products Category:Surfactants
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