Hydrogen peroxide

CAS RN: 7722-84-1

Stability / Shelf Life

Stable under recommended storage conditions. /Hydrogen peroxide solution (>/= 30% to <50%)/
Solutions of hydrogen peroxide gradually deteriorate and are usually stabilized by the addition of acetanilide or similar organic materials.
Hydrogen peroxide topical solution deteriorates upon standing or upon repeated agitation, undergoes accelerated decomposition when exposed to light or when in contact with many oxidizing or reducing substances, and decomposes suddenly when heated.
Pure hydrogen peroxide solutions, completely free from contamination, are highly stable; a low percentage of an inhibitor such as acetanilide or sodium stannate is usually added to counteract the catalytic effect of traces of impurities such as iron, copper, and other heavy metals.
A relatively stable sample of hydrogen peroxide typically decomposes at the rate of approximately 0.5% per year at room temperature.
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