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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.
Alkali metals, alkaline earth metals, and lanthanoid metals form acetylides, for example, sodium carbide Na 2 C 2, calcium carbide CaC 2, and LaC 2. [2] Lanthanides also form carbides (sesquicarbides, see below) with formula M 2 C 3. Metals from group 11 also tend to form acetylides, such as copper(I) acetylide and silver acetylide.
Methyl cellulose does not occur naturally and is synthetically produced by heating cellulose with caustic solution (e.g. a solution of sodium hydroxide) and treating it with methyl chloride. In the substitution reaction that follows, the hydroxyl residues (-OH functional groups) are replaced by methoxide (-OCH 3 groups). [citation needed]
Following the initial reaction, the resultant mixture produces approximately 60% CMC and 40% salts (sodium chloride and sodium glycolate). This product, called technical CMC, is used in detergents . [ citation needed ] An additional purification process is used to remove salts to produce pure CMC, which is used for food and pharmaceutical ...
Sodium chloride – 5 g; Neutral red – 0.03 g; Crystal violet – 0.001 g; Agar – 13.5 g; Water – add to make 1 litre; adjust pH to 7.1 +/− 0.2; Sodium taurocholate; There are many variations of MacConkey agar depending on the need. If the spreading or swarming of Proteus species is not required, sodium chloride is omitted.
The McRib is a barbecue-flavored pork sandwich periodically sold by the international fast food restaurant chain McDonald's.It was first introduced to the McDonald's menu in 1981, following test marketing the year before.
Scheme of a molten-carbonate fuel cell. Molten-carbonate fuel cells (MCFCs) are high-temperature fuel cells that operate at temperatures of 600 °C and above.. Molten carbonate fuel cells (MCFCs) were developed for natural gas, biogas (produced as a result of anaerobic digestion or biomass gasification), and coal-based power plants for electrical utility, industrial, and military applications.
Organosodium chemistry is the chemistry of organometallic compounds containing a carbon to sodium chemical bond. [1] [2] The application of organosodium compounds in chemistry is limited in part due to competition from organolithium compounds, which are commercially available and exhibit more convenient reactivity.