2,5-Dihydroxy-1,4-benzoquinone
Encyclopedia
2,5-Dihydroxy-1,4-benzoquinone or 2,5-Dihydroxy-para-benzoquinone is an organic compound with formula , formally derived from 1,4-Benzoquinone
by replacing two hydrogen
atoms with hydroxyl
(OH) groups. It is one of seven dihydroxybenzoquinone isomers.
The IUPAC name is 2,5-hydroxycyclohexa-2,5-diene-1,4-dione.
Like many alcohol
s, it behaves like an acid
: it can cede two proton
s (pKal = 2.95, pKa2 = 4.87) to form the anion .
1,4-Benzoquinone
1,4-Benzoquinone, commonly known as para-quinone, is a chemical compound with the formula C6H4O2. In a pure state, it forms bright-yellow crystals with a characteristic irritating odor, resembling that of chlorine, bleach, and hot plastic. Impure samples are often dark-colored due to the presence...
by replacing two hydrogen
Hydrogen
Hydrogen is the chemical element with atomic number 1. It is represented by the symbol H. With an average atomic weight of , hydrogen is the lightest and most abundant chemical element, constituting roughly 75% of the Universe's chemical elemental mass. Stars in the main sequence are mainly...
atoms with hydroxyl
Hydroxyl
A hydroxyl is a chemical group containing an oxygen atom covalently bonded with a hydrogen atom. In inorganic chemistry, the hydroxyl group is known as the hydroxide ion, and scientists and reference works generally use these different terms though they refer to the same chemical structure in...
(OH) groups. It is one of seven dihydroxybenzoquinone isomers.
The IUPAC name is 2,5-hydroxycyclohexa-2,5-diene-1,4-dione.
Like many alcohol
Alcohol
In chemistry, an alcohol is an organic compound in which the hydroxy functional group is bound to a carbon atom. In particular, this carbon center should be saturated, having single bonds to three other atoms....
s, it behaves like an acid
Acid
An acid is a substance which reacts with a base. Commonly, acids can be identified as tasting sour, reacting with metals such as calcium, and bases like sodium carbonate. Aqueous acids have a pH of less than 7, where an acid of lower pH is typically stronger, and turn blue litmus paper red...
: it can cede two proton
Proton
The proton is a subatomic particle with the symbol or and a positive electric charge of 1 elementary charge. One or more protons are present in the nucleus of each atom, along with neutrons. The number of protons in each atom is its atomic number....
s (pKal = 2.95, pKa2 = 4.87) to form the anion .