About Bropol (Brominol, BNPD, Bronopol) antiseptic preservatives, you read this article is enough（二））
1. The effect of pH value on microorganisms
The mass reproduction and growth of microorganisms cannot be separated from the appropriate pH value, and we know that the most suitable pH value for most bacteria is neutral or slightly alkaline system. Fungi are suitable for slightly acidic systems. If the pH of the system in which microorganisms live exceeds the range to which they can adapt, their reproduction or growth will be inhibited or killed.
2. The influence of pH value on Broble
Broble is quite stable under acidic conditions, and if the pH value is increased, the decomposition of broble itself will be accelerated, in general, the decomposition time of 50% : > 5 years (pH=4); ≈18 months (pH=6); ≈2 months (pH8).
If in an alkaline system, broble still has an anti-corrosion effect, it is due to the release of formaldehyde from its decomposition.
Third, temperature and humidity
1. The influence of temperature on microorganisms
Under normal circumstances, the effect of preservatives will decrease when the temperature rises. The optimum growth temperature of most microorganisms is 25 ~ 37℃. If the temperature is higher than 40 ° C, or lower than 10 ° C, the reproduction or growth of most microorganisms will be inhibited.
2. The influence of humidity on microorganisms
High relative humidity in the air or environment is conducive to the growth and spread of microorganisms. Therefore, in a dry environment, microbial cells stop their metabolic activities until they die due to water loss.
3. The influence of temperature on Broble
Broble under normal circumstances corrosion resistance is very stable. But as the temperature rises, it speeds up its decomposition
