Barium sulphate (BaSO4), also known as barite, is a white, odorless, and tasteless powder that is insoluble in water and most other solvents. It is a heavy, dense substance that is used in a variety of applications, including:
- X-ray contrast media: Barium sulfate is used as a contrast agent in X-rays of the digestive tract. It coats the inside of the stomach and intestines, making them visible on X-rays.
- Oil drilling: Barium sulfate is used as a weighting agent in drilling fluids. It helps to keep the drill bit in place and prevents the fluid from flowing too quickly.
- Papermaking: Barium sulfate is used as a filler in papermaking. It helps to make the paper whiter and opaquer.
- Paints and coatings: Barium sulfate is used as a pigment in paints and coatings. It helps to make the paint opaque and provides UV protection.
- Cosmetics: Barium sulfate is used in some cosmetics, such as eye shadow and foundation, to make them opaque and give them a smooth finish.
- Pharmaceuticals: Barium sulfate is used in some medications, such as barium carbonate, to treat constipation.
Barium sulphate is a safe substance when used properly. However, it can be harmful if inhaled or ingested in large amounts. It can also cause skin irritation.
Here are some additional safety information about barium sulphate:
- Avoid contact with the skin. If contact occurs, wash the area with soap and water.
- Do not breathe in the dust. If dust is inhaled, move to fresh air and get medical attention if breathing becomes difficult.
- Do not ingest barium sulfate. If ingested, call poison control immediately.
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