The nitro group behaves very similarly to the hydroxyl group.
This would then lead to curious conclusions concerning the hydroxyl group.
The hydrogen of the hydroxyl group in phenol can be replaced by metals, by alkyl groups and by acid radicals.
Those four atoms are called the methyl group, and a methyl group combined with a hydroxyl group forms methyl alcohol.
The hydrogen in the hydroxyl group, as is known, may be substituted by an alkyl group.
The substitution of a hydrogen atom by the hydroxyl group generally occasions a rise in boiling-point at about 100.
Bases may be considered as salts with the hydroxyl group, OH, replacing the acid radical.
They are distinguished from each other by prefixing the name of the element which is in combination with the hydroxyl group.