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| a purplish-red, water-soluble powder, C20H11N2O10Na3, an azo dye used chiefly to color pharmaceuticals, food, and garments |
| a compound in which oxygen is bonded to one or more electropositive atoms |
| pectic acid | |
| —n | |
| a complex acid containing arabinose and galactose that occurs in ripe fruit, beets, and other vegetables. Formula: C35H50O33 | |