It is not, as I originally supposed, due to the presence of free tartaric acid.
"The History and Practice of the Art of Photography" by Henry H. Snelling
One was of tartaric acid, the other of chloride of lime.
"Constance Dunlap" by Arthur B. Reeve
To forty grains of carbonate of soda, add thirty grains of tartaric acid in small crystals.
"Directions for Cookery, in its Various Branches" by Eliza Leslie
Tartaric acid, nature of its electrolysis, 775.
"Experimental Researches in Electricity, Volume 1" by Michael Faraday
As soon as the acid is neutralized, Tartaric Acid.
"The People's Common Sense Medical Adviser in Plain English" by R. V. Pierce
The acid found in the greatest abundance in grape wines, is tartaric acid.
"A Treatise on Adulterations of Food, and Culinary Poisons" by Fredrick Accum
Tartaric acid, 85, 115.
"The Dyeing of Woollen Fabrics" by Franklin Beech
Remove grease, by French chalk, and stains, by diluted oxalic acid, or cream of tartar.
"A Treatise on Domestic Economy" by Catherine Esther Beecher
Acid drinks, with cream of tartar, may be freely given.
"The Ladies Book of Useful Information" by Anonymous
A pinch of tartaric acid would improve the flavor, but often prevent candying, unless in the hands of an expert.
"The Candy Maker's Guide" by Fletcher Manufacturing Company
Pyro-tartarous Pyro-tartarous acid Empyr.
"Elements of Chemistry," by Antoine Lavoisier
If the flavor is not acid enough add a tiny bit of tartaric acid, crushed very fine.
"Harper's Round Table, October 1, 1895" by Various
In fruits, it is usually associated with its derivatives, malic and tartaric acids.
"The Chemistry of Plant Life" by Roscoe Wilfred Thatcher
BAKING POWDER, a mixture of bicarbonate of soda and tartaric acid, usually with some flour added.
"The New Gresham Encyclopedia. Vol. 1 Part 3" by Various
A few drops, only, of lemon-juice, of vinegar, or a little cream of tartar are the acids used.
"The Century Cook Book" by Mary Ronald
This is because some white man showed the Indian how to take the soda and magnesia first, and then swallow the tartaric acid.
"On Canada's Frontier" by Julian Ralph
Yes, sulphate of indigo, with tartaric acid.
"The International Monthly, Volume 5, No. 4, April, 1852" by Various
Where lemons cannot be procured, tartaric acid dissolved in salt and water, is a good substitute.
"The New England Cook Book, or Young Housekeeper's Guide" by Anonymous
This acid of tartar is more soluble in water than the cream of tartar.
"Heads of Lectures on a Course of Experimental Philosophy: Particularly Including Chemistry" by Joseph Priestley
TARTARIC ACID, though not a corrosive, may be here placed along with the other vegetable acids.
"Memoranda on Poisons" by Thomas Hawkes Tanner