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How to Tell If Hydrogen Peroxide Is Still Effective
Knowing the effect of hydrogen peroxide
Hydrogen peroxide is often used for disinfection and bleaching, but after a long time, its effect may be reduced. If you want to know whether it is still good, you can distinguish it according to the following things.
Looking at its properties, the newly prepared hydrogen peroxide is clear as water, colorless and transparent. If you see its color change, such as yellowish, or there is precipitation or foreign matter, it is suspicious of its effect. And it should have no peculiar smell. If you smell it with pungent foreign gas, it is not its inherent smell, you should also pay attention.
Test it by chemical method. Take a little hydrogen peroxide, put it in a clean container, and add an appropriate amount of manganese dioxide. If it is still effective, when you see bubbles gushing out immediately, this is due to the decomposition of hydrogen peroxide to produce oxygen. If there are many and urgent bubbles, the effect is good; if there are few and slow bubbles, or if there are no bubbles, the effect has faded.
It can be temporarily discontinued according to how long it has been stored. Although hydrogen peroxide has a certain shelf life, it is stored in high temperature, light, or the container is not sealed, and its deterioration speed. If it exceeds the shelf life, or is stored in an unfavorable environment, even if the appearance does not change, it should be used with caution to prevent it from being ineffective and ineffective.
Therefore, if you want to know the effect of hydrogen peroxide, you should observe its properties, test it with chemical methods, and observe its storage time and environment, so that it can be judged whether it is usable or not.
Hydrogen peroxide is often used for disinfection and bleaching, but after a long time, its effect may be reduced. If you want to know whether it is still good, you can distinguish it according to the following things.
Looking at its properties, the newly prepared hydrogen peroxide is clear as water, colorless and transparent. If you see its color change, such as yellowish, or there is precipitation or foreign matter, it is suspicious of its effect. And it should have no peculiar smell. If you smell it with pungent foreign gas, it is not its inherent smell, you should also pay attention.
Test it by chemical method. Take a little hydrogen peroxide, put it in a clean container, and add an appropriate amount of manganese dioxide. If it is still effective, when you see bubbles gushing out immediately, this is due to the decomposition of hydrogen peroxide to produce oxygen. If there are many and urgent bubbles, the effect is good; if there are few and slow bubbles, or if there are no bubbles, the effect has faded.
It can be temporarily discontinued according to how long it has been stored. Although hydrogen peroxide has a certain shelf life, it is stored in high temperature, light, or the container is not sealed, and its deterioration speed. If it exceeds the shelf life, or is stored in an unfavorable environment, even if the appearance does not change, it should be used with caution to prevent it from being ineffective and ineffective.
Therefore, if you want to know the effect of hydrogen peroxide, you should observe its properties, test it with chemical methods, and observe its storage time and environment, so that it can be judged whether it is usable or not.
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