Why do amines smell fishy?

Amines are organic compounds that contain nitrogen and are basic. Amines are basic compounds with strong odors. The odor of amines is often described as “fishy” since the odor of raw fish comes from the amines contained.

Does aniline have a smell?

Aniline appears as a yellowish to brownish oily liquid with a musty fishy odor. Melting point -6°C; boiling point 184°C; flash point 158°F.

Why do amines smell bad?

Ammonia can be considered the simplest amine and has a very distinctive odor. Methylamine has an unpleasant odor associated with dead fish. Amines are often formed biologically during the breakdown of proteins in animal cells, and so many have the smell of death and decay.

What is the odor of most amines?

Amines possess a characteristic ammonia smell, liquid amines have a distinctive “fishy” smell.

What does aniline smell like?

Consisting of a phenyl group attached to an amino group, aniline is the simplest aromatic amine. Like most volatile amines, it has the odor of rotten fish. It ignites readily, burning with a smoky flame characteristic of aromatic compounds.

How toxic is aniline?

Exposure to 7-53 ppm aniline vapor causes slight symptoms after several hours, and concentrations greater than 100-160 ppm cause serious disturbances. As little as 1 g of ingested aniline can be fatal to humans, the mean lethal dose is 5-30 g (HSDB 2000).

What do amides smell like?

Most amides are colorless and odorless, and the lighter ones are soluble in water. Because they are polar molecules, amides have comparatively high boiling points and melting points. Amides are synthesized from carboxylic acids and NH 3 or amines.

What is the compound that smells like fish?

The problem is that when fish are killed, bacteria and fish enzymes convert TMAO into trimethylamine (TMA), which gives off the characteristic “fishy” odor.

What is the pH of aniline?

pH lectures Aniline pKb=9.4.