Percarbonates
Percarbonates (also peroxocarbonates or peroxycarbonates) are salts of the hypothetical peroxomonocarbonic acid (HO – CO – O – OH). The general formula is: MHCO 4 . The alkali peroxocarbonates are not stable in water and disintegrate when heated, they are of no technical importance.
Peroxodicarbonates are the salts of the likewise hypothetical peroxodicarbonic acid (HO – CO – O – O – CO – OH). The general formula is: M 2 C 2 O 6 . They are formed during the electrolysis of concentrated solutions of alkali carbonates as salts with a sky-blue color. They are also of no technical significance.
The more commonly used sodium percarbonate is not a real percarbonate, but a H 2 O 2 - adduct . The word component per indicates the excess of oxygen . Sodium percarbonate is used as a bleach or laundry detergent .
literature
- EH Riesenfeld, B. Reinhold: The existence of real percarbonates and their differentiation from carbonates with crystal hydrogen peroxide . Reports of the German Chemical Society , 42 (4), 1909, 4377-4383, doi : 10.1002 / cber.19090420428 .
- EH Riesenfeld, W. Mau: Isomere Percarbonate . Reports of the German Chemical Society, 44 (3), 1911, 3595-3605, doi : 10.1002 / cber.191104403244 .