Why are some plastic bottles Brown
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Why are some plastic bottles Brown

  • Release date: 2021-06-16 16:20 reading times: 273
  • Plastic packaging bottle is a common packaging of veterinary drugs. The key to ensure the stability of drugs is to select the appropriate packaging according to the characteristics of drugs. We sometimes find that some bottles are brown. Why?

    Brown Plastic packaging bottle The color masterbatch is added to the raw material, which is due to the protection function of the drug. There are various kinds of drugs. Some drugs will reduce the content of their active ingredients and cause failure under the light. Some drugs will have physiological and chemical reactions when exposed to light, and even produce toxic substances, which are harmful to health. So these photophobic drugs need to be stored in brown containers.

    Since drugs are afraid of light, why not use black bottles? This is because black means that the incident light is completely absorbed without reflecting light. If the bottle is black, it will be opaque. One of the purposes of using a brown bottle is that the user can observe the dosage of the medicine in the bottle before and after use, so as to make preparation for taking it. Some drugs that are easy to decompose in visible light are sensitive to higher energy light (shorter wavelength), such as blue and qualified band light, but not to red light with low energy. In other words, as long as the light in high energy band of visible light is filtered out, drug reaction can be avoided, instead of filtering out all visible light. Brown bottles can not only filter out most of the visible light, but also ensure the transparency of the bottles, which is easy to observe. Therefore, brown plastic packaging bottles are preferred for drugs that are afraid of light.

    It should be noted that although the drugs that are afraid of light are mostly packed in brown plastic bottles, they should be stored in a cool and dry place and protected from light.

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