It consists of the potassium salt of a complex cyanogen derivative of picric acid.
They are yellow oily or crystalline substances and have well-defined acid properties, as picric acid.
Of the colouring-matters derived from coal-tar, none is more widely known than the oldest artificial yellow dye, picric acid.
This is then further nitrated into trinitrophenol or picric acid.
At the outbreak of the European War the chief high explosive of the Entente Powers was lyddite (in France, melenite), also called trinitrophenol or picric acid.
Picric acid separates, and is washed free from mineral acid and dried.
Moreover, owing to the dilution necessary in the mode of applying Galippe's picric acid test, they are not so readily shown by the latter.
Galippe's picric acid test has within the last few years attracted much attention, chiefly through the commendation it has received from Dr.
Mucin, an important constituent of some urines, is not affected by picric acid, and the test is decidedly one of great value.
Unbleached sheep's wool, boiled for six or ten minutes, and then washed, takes a canary-yellow colour if picric acid be present.
A portion of the liquor agitated with a little solution of diacetate of lead loses its bitter flavour if it depends on hops, but retains it if it depends on picric acid.
A solution of picric acid in alcohol is an excellent test for potassa, if there be not too much water present, as it throws down a yellow crystalline precipitate with that alkali, but forms a very soluble salt with soda.
In filling the shell great precautions are necessary to prevent the melted lyddite (picric acid) from coming in contact with certain materials such as combinations of lead, soda, &c.
Picric acid in some form or other is used in nearly all countries for filling high-explosive shell.
The French melinite and the Italian pertite are believed to be forms of picric acid.
Picric acid patients can only see clearly at very close range, often at only five inches from the eye; Natrum sulph.
Jones, who says: "Onosmodium Virginianum in its primary action seems directly opposite to Picric acid.
Phenol, one of the essentials in the manufacture of picric acid, was another raw material, the production of which was greatly augmented.
Picric acid is, however, the main explosive used by the French, who had placed enormous contracts for this material with explosives manufacturers prior to the entry of the United States in the war.
Picric acid as such is not used by this country directly for military purposes.
Over and about this lead pipe had been spilled a considerable quantity of picric acid, which had formed picrate of lead with the lead pipe.
For instance, picric acid appears in three places in this book.
If this is treated with nitric and sulfuric acids we get from it picric acid, a yellow crystalline solid.
A solution of calcium picrate, that is, the lime salt of picric acid, is pumped in and as the reaction begins the mixture heats up and the chlorpicrin distils over with the steam.
The above list will hopefully provide you with a few useful examples demonstrating the appropriate usage of "picric acid" in a variety of sentences. We hope that you will now be able to make sentences using this group of words.
