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Substrates containing two phenols (or an aniline and a phenol; see equation (8) below for a related example), undergo oxidative coupling in the presence of hypervalent iodine(III) reagents. Coupling of both the ortho and para positions is possible; however, the use of bulky silyl-protected phenols provides complete selectivity for para coupling ...
This article concerns coating applications in the food industry. There are many similarities between coating processes and numerous examples of technology transfer to and from the food industry. Coating in the food industry is the application of a layer of liquids or solids onto a product. The operation essentially relies on mechanical energy.
See also References Further reading External links A acidulate To use an acid (such as that found in citrus juice, vinegar, or wine) to prevent browning, alter flavour, or make an item safe for canning. al dente To cook food (typically pasta) to the point where it is tender but not mushy. amandine A culinary term indicating a garnish of almonds. A dish served amandine is usually cooked with ...
Phenol is so inexpensive that it also attracts many small-scale uses. It is a component of industrial paint strippers used in the aviation industry for the removal of epoxy, polyurethane and other chemically resistant coatings. [33] Safety concerns have caused it to be banned from use in cosmetic products in the European Union [34] [35] and Canada.
Many batters are made by combining dry flour with liquids such as water, milk, or eggs.Batters can also be made by soaking grains in water and grinding them wet. Often a leavening agent such as baking powder is included to aerate and fluff up the batter as it cooks, or the mixture may be naturally fermented for this purpose as well as to add flavour.
The Dutch painting forger Han van Meegeren mixed phenol formaldehyde with his oil paints before baking the finished canvas, in order to fake the drying out of the paint over the centuries. [citation needed] Atmospheric re-entry spacecraft use phenol formaldehyde resin as a key component in ablative heat shields (e.g. AVCOAT on the
Aqueous film coating is the most common film coating method currently used. [1] This type of film coating uses water to aid in the film coating process instead of organic solvents. [ 1 ] The result is a safer means of film coating, as it avoids the toxic and flammable properties of organic solvents.
1 g carbolic acid (phenol, C 6 H 5 OH, biocide) (preservative) 3.5 g china-blue aniline dye (water-soluble) 1000 cm 3 distilled water [21] The Popular Science iron gall writing ink article also mentions methyl violet dye could be used to make a violet iron gall ink without revealing the amount and soluble nigrosine dye