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Orthodontic spacer removal. [2] Spacers are usually used to put spaces in between teeth before braces are established. It can be agitating or painful, but patients are often warned not to pick at them or they will fall out. They are usually rubber, but sometimes they can be metal. They can be used when a patient's teeth are too close together.
Disodium hydrogen phosphite is the name for inorganic compounds with the formula Na 2 HPO 3 •(H 2 O) x.The commonly encountered salt is the pentahydrate. [1] A derivative of phosphorous acid (HP(O)(OH) 2), it contains the anion HPO 3 2−.
Bulk sodium is usually stored in oil or an inert gas. Sodium metal can be easily cut with a knife. It is a good conductor of electricity and heat. Due to having low atomic mass and large atomic radius, sodium is third-least dense of all elemental metals and is one of only three metals that can float on water, the other two being lithium and ...
Sodium sulfite (sodium sulphite) is the inorganic compound with the chemical formula Na 2 SO 3.A white, water-soluble solid, it is used commercially as an antioxidant and preservative.