cream of tartar

chemical compound

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In baking powder
containing tartaric acid or cream of tartar, release carbon dioxide at room temperature, and mixtures in which they are used must be baked immediately to avoid loss of most of the gas.
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In carboxylic acid: Polycarboxylic acids
…of tartaric acid, commonly called cream of tartar, is obtained from wine casks, where it crystallizes as a hard crust. In the past, it was used in baking powders as a leavening agent, but this application has largely (though not entirely) been superseded by cheaper substances such as monocalcium phosphate.…
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In tartaric acid
Purified cream of tartar comes chiefly from the filtrates from production of the acid and Rochelle salt. A third salt, tartar emetic (antimony potassium tartrate), is made from the potassium acid salt and antimony oxide.
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