sorrel salt

noun

1. potassium binoxalate.

Word History and Origins

Origin of sorrel salt¹

First recorded in 1790–1800

Example Sentences

This gives way rather promptly to an application of sorrel salt dissolved in boiling water.

From Project Gutenberg

A spot of ordinary black ink upon morocco, sheepskin, calf or smooth parchment, loses its color when touched with a few drops of sorrel salt or oxalic acid; but I will repeat here the advice already given that these substances may alter certain colors and that it is best to first try them on extra pieces of leather.

From Project Gutenberg