Question

Why is hydrogen peroxide stored in cold temperatures?

Answer 1

The chemical compound hydrogen peroxide has the formula ${{H}_{2}}{{O}_{2}}$ . It's a very pale blue liquid that's somewhat more viscous than water in its purest state. It's used as an oxidant, bleaching agent, and antiseptic in a weak solution (3–6% by weight) in water for consumer use, and at larger concentrations for industrial usage. When heated, concentrated hydrogen peroxide, often known as "high-test peroxide," decomposes explosively and has been employed as a rocket propellant.

Complete answer:
Hydrogen peroxide decomposition releases oxygen and heat. The heat released in dilute solutions is quickly absorbed by the water present. Heat elevates the temperature of the solution and speeds up the breakdown rate in more concentrated solutions. During the manufacturing of all grades of hydrogen peroxide, special stabilisers are added to prevent metals and other contaminants from unintentionally contaminating the chemical during transport, storage, and handling.
Hydrogen peroxide is a highly unstable substance. It decomposes, sometimes explosively, into oxygen and water. The temperature is $20\text{ }{}^\circ C$ colder if the ambient temperature is $20\text{ }{}^\circ C$ and the refrigerator temperature is $0\text{ }{}^\circ C$. According to a rule of thumb, the pace of reaction falls by a factor of two for every $10\text{ }{}^\circ C$ drop in temperature, thus the rate of breakdown in the refrigerator will be just $\dfrac{1}{4}$ as rapid. Sunlight's UV component speeds up the breakdown of hydrogen peroxide. Hydrogen peroxide is marketed in brown bottles or other opaque containers because of this.
$2{{H}_{2}}{{O}_{2}}\to 2{{H}_{2}}O+{{O}_{2}}$
The molecules' mobility is slowed by the chilly temperature. When molecules collide at a lower temperature, they do not collide as rapidly, and when they do collide, fewer molecules have enough energy to cause a reaction.
Keeping hydrogen peroxide in the refrigerator accomplishes two goals:
Thermal degradation is slowed.
Photolytic degradation is avoided.

Note:
Hydrogen peroxide should only be stored in the original shipping container or in specially designed containers made of suitable materials that have been fully passivated. It is not recommended that hydrogen peroxide be returned to the original shipping container. All containers must be adequately vented and stored away from direct heat sources and flammable items. Ample ventilation and water supply should be given to allow for complete flushing of accidental spills on employees and property.