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pearl ash

British  

noun

  1. the granular crystalline form of potassium carbonate

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

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In the 1780s, American cooks started adding the chemical leavener pearl ash to their pancake batter.

From Slate Feb. 5, 2013

The Doctor found that a mixture of pearl ash with soot, calcined by a very intense heat in a covered crucible, when cold caught fire on the affusion of water.

From James Cutbush An American Chemist, 1788-1823 by Edgar Fahs Smith

When all the soap is molten, additions of pearl ash solution are made to give it a finer and smoother texture, render it more transparent, and increase its lathering properties.

From The Handbook of Soap Manufacture by W. H. Simmons

The industries included a steam sawmill, a brickyard, pearl ash factory, blacksmith, carpenter and shoe shops as well as a good general store.

From The Journal of Negro History, Volume 3, 1918 by Various

Purified potassium carbonate is known as pearl ash.

From Soap-Making Manual A Practical Handbook on the Raw Materials, Their Manipulation, Analysis and Control in the Modern Soap Plant. by E. G. Thomssen

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