cas no 111-55-7
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On the other hand, HALS are a unique class of stabilizers that work by scavenging free radicals generated during the photodegradation process. By trapping these free radicals, HALS significantly slow down the degradation of the polymer chains, preserving the mechanical properties of the plastic. This mechanism allows HALS to be effective even in small concentrations, making them a popular choice in various applications.
light stabilizers for plastics...
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Penicillin, a pioneer among antibiotics, once had a production process that caused significant environmental pollution. In recent years, with the application of eco-friendly pharma intermediates, penicillin production has become cleaner and more efficient. For instance, using biocatalysis instead of chemical catalysis not only increases penicillin yield but also significantly reduces wastewater and gas emissions, achieving green production processes. Additionally, optimizing fermentation techniques has improved the biosynthesis efficiency of penicillin, reduced chemical synthesis steps, and lowered energy and resource consumption.
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Links
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Safety and Regulations
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Potassium sorbate is a salt of sorbic acid naturally found in some fruits (like the berries of mountain ash). The commercial ingredient is synthetically produced, creating what is termed a “nature identical” chemical (chemically equivalent to the molecule found in nature). Today, this preservative can be found in wine, cheese, beer, dried meat, soft drinks, and many other food products. This food additive is often used to improve shelf stability and prevent bacteria and mold growth. This ingredient is so prevalent in processed food because it does not change the quality of the product and is also water-soluble.
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Preservatives
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3. Versatility Gelatin can function in a wide range of pH levels, making it suitable for various food applications, from acidic dressings to neutral emulsions in bakery products.
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In agriculture, formic acid is prized for its use as a preservative in animal feed. When added to silage, it helps in preventing spoilage and encourages the growth of beneficial bacteria, improving the fermentation process. This makes feeds more palatable and nutritious for livestock while reducing waste.
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In certain water treatment facilities, particularly those dealing with wastewater, chemicals are also used to remove excess nutrients, such as nitrogen and phosphorus, which can lead to eutrophication. Commonly used agents include alum and iron salts to precipitate phosphorus from the water, while processes like biological nutrient removal utilize specific microorganisms to assimilate nitrogen and phosphorus.