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NOBS is the main bleach activator used in the U.S.A. and Japan. [4] Compared to TAED, which is the predominant bleach activator used in Europe, NOBS is efficient at much lower temperatures. At 20 °C NOBS is 100 times more soluble than TAED in water. [5]
The overall reaction of TAED (1) with 2 equivalents of hydrogen peroxide gives diacetylethylenediamine (2) and 2 equivalents of peracetic acid (3): Only the perhydroxyl anion, and not the hydrogen peroxide molecule, reacts with the bleach activator. [4]
TAED was first used in a commercial laundry detergent in 1978 (Skip by Unilever). [1] Currently, TAED is the main bleach activator used in European laundry detergents and has an estimated annual consumption of 75 kt. [2]
Blood samples should be allowed time to form a clot at room temperature for 30–60 min. [6] CDC recommends a range of time to allow clot formation that was reasonably consistent, from a minimum of 30 min to 60 min maximum. [7]
Activator may refer to: Activator (genetics) , a DNA-binding protein that regulates one or more genes by increasing the rate of transcription Activator (phosphor) , a type of dopant used in phosphors and scintillators
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The energy of activation [1] specifies the amount of free energy the reactants must possess (in addition to their rest energy) in order to initiate their conversion into corresponding products—that is, in order to reach the transition state for the reaction. The energy needed for activation can be quite small, and often it is provided by the ...