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A solution of nitric acid, water and alcohol, nital, is used for etching metals to reveal the microstructure. ISO 14104 is one of the standards detailing this well known procedure. [45] Nitric acid is used either in combination with hydrochloric acid or alone to clean glass cover slips and glass slides for high-end microscopy applications. [46]
Chemical routes such as covalent functionalization have been studied extensively, which involves the oxidation of CNTs via strong acids (e.g. sulfuric acid, nitric acid, or a mixture of both) in order to set the carboxylic groups onto the surface of the CNTs as the final product or for further modification by esterification or amination. Free ...
[160] [162] Housing in Northern England is more affordable than the UK average: the median house price in most Northern cities was below £200,000 in 2015 with typical increases of below 10% over the previous five years. However, some areas have seen house prices fall considerably, putting inhabitants at risk of negative equity. [163] [164]
A positive correlation has been observed between acid attacks and ease of acid purchase. [49] Sulfuric, nitric, and hydrochloric acid are most commonly used and are all cheap and readily available in many instances. For example, often acid throwers can purchase a liter of concentrated sulfuric acid at motorbike mechanic shops for about 40 U.S ...
This intermediate is then hydrolyzed using hydrochloric acid, and subsequently basified, extracted with organic solvent, concentrated, and distilled to yield the free base. The free base is then dissolved in an organic solvent, sulfuric acid added, and amphetamine precipitates out as the sulfate salt. [245] [246]
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