- published: 04 Sep 2015
- views: 29838
Aniline is a toxic organic compound with the formula C6H5NH2. Consisting of a phenyl group attached to an amino group, aniline is the prototypical aromatic amine. Its main use is in the manufacture of precursors to polyurethane and other industrial chemicals. Like most volatile amines, it possesses the odor of rotten fish. It ignites readily, burning with a smoky flame characteristic of aromatic compounds.
Industrial aniline production involves two steps. First, benzene is nitrated with a concentrated mixture of nitric acid and sulfuric acid at 50 to 60 °C to yield nitrobenzene. The nitrobenzene is then hydrogenated (typically at 200–300 °C) in the presence of metal catalysts.
The reduction of nitrobenzene to aniline was first performed by Nikolay Zinin in 1842 using inorganic sulfide as a reductant (Zinin reaction).
Aniline can alternatively be prepared from ammonia and phenol derived from the cumene process.
In commerce, three brands of aniline are distinguished: aniline oil for blue, which is pure aniline; aniline oil for red, a mixture of equimolecular quantities of aniline and ortho- and para-toluidines; and aniline oil for safranine, which contains aniline and ortho-toluidine, and is obtained from the distillate (échappés) of the fuchsine fusion.
In this video we make Aniline from Nitrobenzene
This video discusses electrophilic aromatic substitution reactions involving aniline such as nitration, chlorination, methylation, aromatic sulfonation, bromination, friedel crafts alkylation and acylation, and iodination. It also discusses the use of protecting groups to make an amide functional group which is an ortho para moderate activator. The use of strong acids or even the alcl3 lewis catalyst deactivates the amino group of aniline converting it from a strongly ortho para activating group into a meta directing strong deactivator.
This video shows you how to synthesize Aniline from Benzene.
We demonstrate the differences between aniline and nubuck leathers, discuss cleaning methods, and restore an aniline sofa using a Rub 'n Restore™ custom glaze, a spray gun, and a sponge. http://www.rubnrestore.com Rub 'n Restore products have been used by professionals for over 30 years. http://www.vinylladies.com Follow us on social media @RubnRestore Facebook https://www.facebook.com/RubnRestore Instagram https://instagram.com/rubnrestore/ Twitter https://twitter.com/rubnrestore Pinterest https://www.pinterest.com/rubnrestore/
Learn about the difference between aniline, semi aniline and pigmented leather
In this video, Jason Elquest demonstrates how to apply aniline dye to a hardwood floor. This was recorded during the City Floor Supply Store's 2014 NWFA training event. Check out a list of our upcoming events for contractors: http://bit.ly/1wlcUqi Applying dye to a hardwood floor is always a tricky ordeal, but aniline dye is especially difficult to work with. This dye is pretty unforgiving when it comes to lap marks. If you're not vigilant about your application process, you'll leave the floor with unsightly streaks and uneven color. Luckily, Jason shares some techniques that can keep that from happening: - Use long strokes to avoid lap lines and heavy spots. Move quickly to even out any heavy spots that do appear. - Cut a pad applicator down to the width of two boards to minimize th...
Aniline, phenylamine or aminobenzene is an organic compound with the formula C6H5NH2. Consisting of a phenyl group attached to an amino group, aniline is the prototypical aromatic amine. Being a precursor to many industrial chemicals, its main use is in the manufacture of precursors to polyurethane. Like most volatile amines, it possesses the somewhat unpleasant odor of rotten fish. It ignites readily, burning with a smoky flame characteristic of aromatic compounds. Aniline is colorless, but it slowly oxidizes and resinifies in air, giving a red-brown tint to aged samples. Uses: The largest application of aniline is for the preparation of methylene dianiline and related compounds by condensation with formaldehyde as discussed above). The diamines are condensed with phosgene to give M...
This video discusses the mechanism to convert nitrobenzene to aniline or a nitro group into an amine functional group.
From the very first time I rest my eyes on you, boy
My heart said follow through
But I know now that I'm way down on your line
But the waiting feeling's fine
So don't treat me like a puppet on a string
Because I know how to do my thing
Don't talk to me as if you think I'm dumb
I wanna know when you're gotta come, you see
I don't wanna wait in vain for your love
I don't wanna wait in vain for your love
I don't wanna wait in vain for your love
'Cause summer is here - and I'm still waiting there
Winter is here - and I'm still waiting there
Like I said -
It's been three years since I'm knocking on your door
And still I can knock some more
Ooh boy, ooh boy - is it crazy look, I wanna know now
For I to knock some more
You see
In life I know that there is lots of grief
But your love is my relief
Tears in my eyes burn
Tears in my eyes burn
While I'm waitin'
While I'm waitin' for my turn
You see
I don't wanna wait in vain for your love
I don't wanna wait in vain for your love
I don't wanna wait in vain for your love
I don't wanna wait in vain for your love
'Cause summer is here - and I'm still waiting there
Winter is here - and I'm still waiting there
Like I said -
I don't wanna, I don't wanna
I don't wanna, I don't wanna
I don't wanna wait in vain
I don't wanna, I don't wanna
I don't wanna, I don't wanna
I don't wanna wait in vain
It's been three years since I'm knocking on your door
And still I can knock some more
Ooh boy, ooh boy - is it crazy look, I wanna know now
Like I said -
Tears in my eyes burn
Tears in my eyes burn
While I'm waiting
While I'm waiting for my turn
You see
Ooh boy, ooh boy - is it crazy look, I wanna know now
For I to knock some more
In life I know there is lots of grief
But your love is my relief