Question

What is perhydrol? Give composition and its use.

Answer 1

We have to know that the hydrogen peroxide is a chemical compound with the formula ${H_2}{O_2}$. In its pure form, it is a very pale blue liquid, slightly more viscous than water. It is used as an oxidizer, bleaching agent, and antiseptic. Concentrated hydrogen peroxide, or high-test peroxide, is a reactive oxygen species and has been used as a propellant in rocketry.

Complete answer:
We need to remember that the perhydrol, that is being used as an antiseptic and germicide for cleaning wounds, teeth and ears, it is 30 percent ${H_2}{O_2}$ solution. Perhydrol is a strong oxidizing agent which is used as a ripening agent, bleach, and topical anti-infective in aqueous solution. Until stabilized by the introduction of acetanilide or related organic materials, it is highly unstable and solutions deteriorate.
The net reaction for the anthraquinone-catalyzed process is:
${H_2} + {O_2} \to {H_2}{O_2}$
The economics of the process depend heavily on effective recycling of the extraction solvents, the hydrogenation catalyst and the expensive quinone. Hydrogen peroxide is most commonly available as a solution in water. For consumers, it is usually available from pharmacies at $3$and $6\;wt\%$ concentrations. The concentrations are sometimes described in terms of the volume of oxygen gas generated; one milliliter of a 20-volume solution generates twenty milliliters of oxygen gas when completely decomposed. For laboratory use, $30wt\%$ solutions are most common.

Note:
We need to know that the commercial grades from $70\%$ to $98\%$ are also available, but due to the potential of solutions of more than $68\%$ hydrogen peroxide to be converted entirely to steam and oxygen (with the temperature of the steam increasing as the concentration increases above $68\%$) these grades are potentially far more hazardous and require special care in dedicated storage areas.