What components are present in concentrated ammonia water used in coking?
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The concentrated ammonia solution used in coking plants contains 18-20% ammonia; its composition seems quite complex, with yellow oily droplets present in it, as well as an unpleasant odor (not the odor of ammonia). When exposed to sunlight, its color changes to green and then to black after some time. Black particles appear, but they disappear after evaporation ； After complete evaporation, needle-like crystals appear. Let’s analyze what components are present in each.
It should be various phenols and other organic substances; it cannot be inorganic substances.
Reply to 1# jackey86888: It should contain some pyridine; pyridine has a very pungent odor. Our factory used to produce it, but production was halted due to poor working conditions
I agree with the comment above, and would add that the component responsible for color change is ammonium bicarbonate
It contains volatile phenols, which is why it has a strong taste. There are also some unsaturated olefins and the like. Turns black after oxidation