L-cysteine S-sulfate sodium sal
Stability Under Different Environmental Conditions
The chemical stability of L-cysteine S-sulfate sodium salt is affected by factors such as pH, temperature, light, and oxidants, which directly determine its storage conditions and application scope.pH stability: It is most stable in the pH range of 5.0–7.0; in strongly acidic (pH < 2.0) or strongly alkaline (pH > 10.0) environments, the-S-SO_3^-bond is prone to cleavage, leading to decomposition.Temperature stability: It is stable at temperatures below 100 °C for short periods; prolonged heating above 150 °C will cause irreversible decomposition, producing sulfur dioxide, ammonia, and carbonization products.Light stability: It is sensitive to ultraviolet (UV) light; exposure to UV light for a long time will accelerate the oxidation and decomposition of the compound, so it should be stored in dark packaging.Compatibility with other substances: It is compatible with most carbohydrates, amino acids, and vitamins in food and pharmaceutical formulations; however, it should avoid contact with strong oxidants (e.g., hydrogen peroxide, potassium permanganate) and heavy metal ions (e.g.,Fe^3+,Cu^2+) for a long time to prevent degradation or complexation.
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