➤ Localized in the retina, muscle and bone tissue.

➤ Low concentrations help to relax muscles, while high concentrations cause muscle contraction.

➤ In leukemia, the content of Barium in plasma and red blood cells is increased.

➤ Determination of the amount of Barium is used to diagnose and predict the treatment of leukemia.

➤ The total mass of Ba in an adult human body is about 20 mg.

➤ In excessive amounts, myopathy, hypertension, and nephropathy are observed.

➤ It has a variable effect on smooth muscle tone, causes central nervous system disorders and exhausts the body.

➤ BaSO₄, an aqueous suspension, is used for X-ray imaging of the esophagus, stomach, and intestines.

➤ Ba(OH)₂ is used as a catalyst in cement for attaching orthodontic structures and pastes in dentistry.

➤ Barium sulfate is used in the diagnosis of gastrointestinal diseases as an X-ray contrast agent.

➤ Chemically pure BaSO₄ is used to treat gastric and duodenal ulcers.

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➤ Soluble barium salts have a toxic effect that can cause a number of symptoms, such as: gastrointestinal upset, vertigo, pharyngeal reflex, abdominal cramps, involuntary contractions, hypertension, unnatural skin color of the face and extremities, inability to function of the tongue and larynx muscles, loss of visual acuity.

➤ It enters the body through the respiratory tract and the gastrointestinal tract.

➤ It can be fatal due to paralysis of the heart muscle.

➤ Antidote: sodium or magnesium sulfates.

➤ All Ba salts, except sulphates, are poisonous.

➤ Pure Ba is only used in vacuum technology as a getter (gas absorber).

➤ BaSO₄ is a part of expensive paper grades.

➤ Barium titanate BaTiO₃ is one of the main ferroelectrics (high dielectric constant).

➤ Barium titanate BaTiO₃ retains its ferroelectric properties up to +125 C.^o

➤ Ba⁺² salts colour the flame green.