Chemical buffering agent

Sodium carbonate is used as an alkaline builder in NSD powders and in a few locations as a neutralising agent for alkylbenzene sulphonic acids and as a chemical buffering agent during caustic soda neutralisation. It is commercially available in two forms, a light and dense powder. For the neutralisation process a 20% solution is prepared on site by dissolving sodium carbonate in water. 

Wa.terBa.la.nce Chemicals. Water balance chemicals include muriatic acid, sodium bisulfate, and soda ash for pH control, sodium bicarbonate for alkalinity adjustment, and calcium chloride for hardness adjustment. A recent development is use of buffering agents for pH control. One of these products, sodium tetraborate, hydrolyzes to boric acid and a small amount of orthoborate (50) which provides significantly less buffering than carbonate and cyanurate alkalinity in the recommended pool pH range of 7.2—7.8 even at 100 ppm. 

Buffer solutions are used to control retention and selectivity in the chromatography of ionisable solutes, and in addition the chemical nature of the buffering agent can affect secondary equilibria, eg interaction of the solute with silanol groups (see Section 4.2). 

Interferences are of particular importance for devices destined for continuous use in very complex matrices. Biosensors are tested for interferences not just from species that are expected to bind to or react with the particular chemical recognition agent employed the end use of the biosensor is considered, and components of that sample matrix are examined for potential interference. Test assays are conducted in the sample matrix, and compared with results obtained in simple buffers in order to determine analyte recovery. 

Addex-tham AI3-03948 Aminotrimethylolmethane Aminotris(hydroxymethyl)methane Apiroserum Tham Caswell No. 036 EINECS 201-064-4 EPA Pesticide Chemical Code 083901 HSDB 3408 Methanamine, 1,1,1-tris(hydroxymethyl)- NSC 6365 Pehanorm Talatrol Tham THAM THAM-E Trimethylolamino-methane Tris Tris (buffering agent) Tris-base Tris buffer Tris, free base Tris-hydroxymethyl-aminomethan Tris-... 

Ion mobility spectrometry (IMS) is now a well-established analytical technique that is employed throughout the world for the detection of explosives, drngs, and chemical warfare agents. The predominant approach is based on the nse of a drift cell in which ions migrate through a counter flowing bnffer gas in the presence of a low electric field. Separation of ions takes place as a resnlt of interactions between these ions and the buffer gas, and depends on the mass, charge, and shape of the ion. Because the drift cell was employed in the first ion mobility (IM) approach used (and is still the most common), the use of the drift cell in this manner is often referred to as IMS. In discussions of the development of the field of IM, it would be prudent to differentiate this experimental technique in which the drift cell is used from other... 

Btu. British thermal unit. The quantity of heat required to raise the temperature of one pound of water from 17 C (63 F) to 18 C (64 F). buffer. A solution that minimizes changes in hydrogen ion concentration that would otherwise occur as a result of a chemical reaction, buffering agent. Drives an acidic or alkaline solution to neutral. 

Since mAbs are prone to physical and/or chemical degradation due to various stress conditions, a variety of pharmaceutical excipients (such as buffering agents, sugars, sugar alcohols, surfactants, amino acids, salts, etc.) are routinely introduced into protein formulations to increase the solubility... 

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