supercarbonaten.
/suːpəˈkɑːbəneɪt/, /sjuːpəˈkɑːbəneɪt/, U.S. /ˌsupərˈkɑrbəˌneɪt/ Chemistry. Now disused.
Bicarbonate. In later use also: any salt having a higher proportion of the carbonate radical than a simple carbonate.
ΚΠ
1803 A. Duncan Edinb. New Dispensatory (new ed.) iii. 394 Water of Super-Carbonate of Soda. This is prepared from ten pounds of water, and two ounces of carbonate of soda, in the same manner as the water of super-carbonate of potass.
1814 Ann. Philos. 3 59 If we consider the imperfectly acid properties of carbonic acid, it is reasonable to consider as supercarbonates those combinations in which the acid contains four times as much oxygen as the base; and as neutral carbonates, those in which it contains twice as much.
1849 Western Misc. 1 29 Take also a tea spoonfull of pulverized charcoal, or super carbonate of soda, in part of a glass of water.
1906 E. W. Hilgard Soils xxii. 441 All naturally occurring carbonate of soda contains, and sometimes consists of, these ‘super-carbonates,’ according to the greater or less exposure to air and solar heat.
This is a new entry (OED Third Edition, June 2012; most recently modified version published online March 2022).
supercarbonatev.
/suːpəˈkɑːbəneɪt/, /sjuːpəˈkɑːbəneɪt/, U.S. /ˌsupərˈkɑrbəˌneɪt/ Chemistry. rare.
transitive. To carbonate to a high degree; to charge (a substance) with a high proportion of carbon, or of carbon dioxide. Also intransitive.
ΚΠ
1793 T. Beddoes Observ. Nature & Cure Calculus p. x Easy extemporaneous way to supercarbonate alkali to a certain degree.
1971 U.S. Patent 3,589,999 3 It may be necessary to supercarbonate periodically.
This entry has been updated (OED Third Edition, June 2012; most recently modified version published online March 2022).
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n.1803v.1793