PERIODIC ACID

Chemical properties

PERIODIC ACID is colourless crystals

Physical properties

In dilute solution, periodic acid exists as H⁺ and IO4^-. When more concentrated, orthoperiodic acid, H5IO6, is formed. Note that this compound is essentially a dihydrate, HIO4·2H2O. This can be obtained as a crystalline solid. O-periodic acid can be dehydrated to metaperiodic acid, m-HIO4. Further heating gives di-iodine pentoxide (I2O5) and O2. The anhydride di-iodine heptoxide, i.e. I2O7, does not exist in nature but can be formed synthetically.

The Uses of PERIODIC ACID

PERIODIC ACID is used as an oxidiser and in the determination of manganese.

The Uses of PERIODIC ACID

To a suspension of H5IO6 (159 mg, 0.698 mmol) in ACN was added CrO3 (0.6 mg, 0.0061 mmol), and the mixture was stirred at RT for 30 min. The mixture was cooled to 0 C and a solution of the SM (100 mg, 0.349 mmol) was added dropwise. The reaction mixture was stirred at 0 C for 30 min. The org solvent was removed in vacuo, the residue was supended in H2O (10 mL), and the mixture was extracted with EtOAc (3 x 10 mL). The combined organics were washed with H2O, dried (Na2SO4), and concentrated? to provide the product as an off-white solid. [105 mg, quant.]

The Uses of PERIODIC ACID

In organic synthesis.

The Uses of PERIODIC ACID

Periodic acid is used as a component for glycoprotein stains. It serves as a pharmaceutical and synthetic intermediate and is used in silk screen printing. It acts as an oxidizing agent especially the cleavage of 1,2 diols to prepare dialdehydes. It has selective oxidation powers which makes it an ideal reagent for the reclamation of silk screens in the printing industry. It finds application in life sciences for the analysis of intracellular polysaccharides like glycogen, starch and cellulose. Furthermore, it is used in the oxidation reactions converting sulfides into sulfones, catalyzed by chromium(VI) oxide and oxidation reactions converting alcohols to aldehydes and ketones.

What are the applications of Application

Periodic acid is a cell cytoplasm stain and a strong oxidizing agent

Definition

ChEBI: Orthoperiodic acid is an iodine oxoacid. It is a conjugate acid of an orthoperiodate(1-).

Reactions

Paraperiodic acid H5IO6, is obtained from sodium paraperiodate, formed by action of chlorine upon a NaOH solution containing I2. On vacuum drying, paraperiodic acid yields metaperiodic acid, HIO4, and dimesoperiodic acid, H4I2O9; which form heteropoly acids with a number of oxides and acids. The periodic acids and their salts are strong oxidizing agents both with inorganic and organic compounds.

General Description

Periodic acid (H₅IO₆) is an oxoacid of iodine. It is commonly used as an oxidizing agent in organic synthesis for the preparation of useful chemical intermediates. Periodic acid is also used in oxidative cleavage reactions.

Flammability and Explosibility

Not classified