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glacial acetic acid

noun

  1. acetic acid of at least 99.5 percent concentration, solidifying at 16.7°C.


glacial acetic acid

noun

  1. pure acetic acid (more than 99.8 per cent)
“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word History and Origins

Origin of glacial acetic acid1

First recorded in 1835–45
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Example Sentences

For preservation dried specimens are needed: a very thin layer of fresh blood is evenly spread with the needle over the glass cover, exposed to the weak fumes of a solution of osmic acid, and allowed to dry under protection from dust; the dried film of blood may then be treated with glacial acetic acid or may be stained.

After exposure in the camera, the picture was developed by pouring over the surface of the plate a solution of pyrogallic acid of the following proportions:— Pyrogallic acid 5 grains Distilled water 10 ounces Glacial acetic acid 40 minims After the development of the picture it was washed and fixed in a solution of hyposulphite of soda, 4 ounces to 1 pint of water.

The purity of the compound can be ascertained by dissolving in glacial acetic acid, adding potassium iodide, and titrating with thiosulphate; 0.1 gram should require 14.8 to 14.9 c.cms. of N/10 sodium thiosulphate.

The fluorene is separated from this by placing it in a freezing mixture, and is then redistilled or crystallized from glacial acetic acid, or purified by means of its picrate.

Such is the process in outline, and it will be seen that no proposal to manufacture glacial acetic acid on an estate could be considered feasible, although it would not present any great difficulty on a large scale and under skilled direction.

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