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Ethylenediamine pyrocatechol (EDP), also known as ethylenediamine-pyrocatechol-water (EPW), is an anisotropic etchant solution for silicon. [1] A typical formulation consists of ethylenediamine , pyrocatechol , pyrazine and water.
Ethane-1,2-dithiol, also known as EDT, [1] is a colorless liquid with the formula C 2 H 4 2. It has a very characteristic odor which is compared by many people to rotten cabbage . It is a common building block in organic synthesis and an excellent ligand for metal ions.
For instance, in order to make the EdT version of a fragrance brighter and fresher than its EdP, the EdT oil may be "tweaked" to contain slightly more top notes or fewer base notes. Chanel No. 5 is a good example: its parfum, EdP, EdT, and now-discontinued EdC concentrations are in fact different compositions (the parfum dates to 1921, the EdT ...
Depending on where you live, avoiding extreme winter weather may be unavoidable — as is keeping children at home for long stretches of time. Here’s what health experts advise to offset the ...
If leggings aren't your thing, then you definitely need these sherpa lined sweatpants in your closet rotation. Complete with a 4.4-star rating from more than 19,600 Amazon buyers, shoppers ...
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As holiday lights brighten streets and the season of cheer unfolds, Dec. 21 marks the winter solstice this year -- a reminder that the darkest day of the year is upon us.. For the more than 6 ...
Print permanence refers to the longevity of printed material, especially photographs, and preservation issues. Over time, the optical density , color balance , lustre, and other qualities of a print will degrade.