Dark bottles are used for chemicals sensitive to UV or some visible light.
Some medications are deactivated by sunlight.Dark colored bottles prevents too much sunlight from coming into contact with the medication and inactivating it.
Dark glass bottles help protect the medicine from light exposure, which can degrade the effectiveness of certain medications. Light can cause chemical reactions in the drug that may reduce its potency or stability. Therefore, using dark glass bottles helps maintain the drug's quality and shelf life.
Some chemical compounds are sensitive to light. The dark colored bottle prevents light from getting to the contents. The same is true for things like beer and medicines.
Under the action of light, nitric acid slowly decomposes into oxides of nitrogen plus free oxygen, and may thus produce a pressure in a stoppered container. If kept for any time, the stopper should be occasionally loosened (carefully) to avoid pressure build up.
well some foods and beverages (like rootbeer)are stored in brown bottles to keep them cold.the brown of the bottle reflects the sun away from the food or beverage to keep it nice and cold. :)
In the majority of cases, medications should be stored in a cool, dry place. The medicine cabinent in a bathroom is not a good spot, due to the heat and moisture that is there. On top of a bedroom dresser or nightstand would be a good choice. Remember, you can always ask your pharmacist where the medication can be stored. There are only a few that should be case in the fridge, mainy injectable drugs or insulin.
For some vitamins and other drugs, it is important to keep them out of the sunlight as this exposure can change their chemical structure. The dark brown bottles keeps the sunlight out to protect them.
Medications stored in glass containers are usually liquid. These medications are better stored in glass due to how they sometimes react to the plastic of the other containers. Also, some of these glass containers are known to be darkened, in order to help preserve the medication in the bottle.
Cough medicines are abused for being addictive when used for longer and for some rare side effects like dark spots on the skin.
There are methods of formulation, preparation, and packaging that all reduce the degradation of medicines as much as possible. Some medicines can contain preservatives to prevent decomposition, or inert ingredients to reduce susceptibility to light, heat, or moisture. Many medicines are prepared in time-release spheres or gelatin capsules to isolate them until they are to become activated. Some are wrapped in airtight packages, or in brown glass bottles, or in vacuum-sealed containers where necessary.
This is because our digestive juices will destroy some medicines.