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Buffer solutions are used as a means of keeping pH at a nearly constant value in a wide variety of chemical applications. In nature, there are many living systems that use buffering for pH regulation. For example, the bicarbonate buffering system is used to regulate the pH of blood, and bicarbonate also acts as a buffer in the ocean.
McIlvaine buffer is a buffer solution composed of citric acid and disodium hydrogen phosphate, also known as citrate-phosphate buffer. It was introduced in 1921 by the United States agronomist Theodore Clinton McIlvaine (1875–1959) from West Virginia University , and it can be prepared in pH 2.2 to 8 by mixing two stock solutions.
The maleate ion is the ionized form of maleic acid. The maleate ion is useful in biochemistry as an inhibitor of transaminase reactions. Maleic acid esters are also called maleates, for instance dimethyl maleate .
Good's buffers (also Good buffers) are twenty buffering agents for biochemical and biological research selected and described by Norman Good and colleagues during 1966–1980. [ 1 ] [ 2 ] [ 3 ] Most of the buffers were new zwitterionic compounds prepared and tested by Good and coworkers for the first time, though some ( MES , ADA , BES , Bicine ...
Desalting and buffer exchange both entail recovering the components of a sample in whatever buffer is used to pre-equilibrate the small, porous polymer beads (resin). Desalting occurs when buffer salts and other small molecules are removed from a sample in exchange for water (with the resin being pre-equilibrated in water).
Cholic acid, sodium salt: 14: 2-4 Deoxycholic acid, sodium salt: 5: 4-10 Glycocholic acid, sodium salt: 13: 2 Sodium dodecyl sulfate (SDS) 8.27: 62 Taurocholic acid, sodium salt: 10-15: 4 Sodium tetradecyl sulfate: 2.1 Cationic: Cetyltrimethylammonium chloride: 1 Cetyltrimethylammonium bromide (CTAB) 1.3: 78 Dodecyltrimethlyammonium bromide ...
It consists of a mixture of 0.04 M boric acid, 0.04 M phosphoric acid and 0.04 M acetic acid that has been titrated to the desired pH with 0.2 M sodium hydroxide. Britton and Robinson also proposed a second formulation that gave an essentially linear pH response to added alkali from pH 2.5 to pH 9.2 (and buffers to pH 12).
Disodium malonate is a sodium salt of malonic acid with the chemical formula CH 2 (COONa) 2. It is a white crystal soluble in water but not in alcohols, esters or benzene. It can be prepared from the reaction of sodium hydroxide and malonic acid: CH 2 (COOH) 2 + 2 NaOH → CH 2 (COONa) 2 + 2 H 2 O