Radium chloride radium chloride is weakly paramagnetic with a magnetic susceptibility of 1.05. It also differs from barium chloride by the flame color, which is red as opposed to green for barium chloride. Radium chloride is still used for the initial stages of the separation of radium from barium during the extraction of radium from pitchblende. The large quantities of material involved (tonnes of ore for milligrams of radium) favour this less costly (but less efficient) method over those based on radium bromide or radium chromate (used for the later stages of the separation). It was also used in medicine to produce
Radium dials 186 keV gamma emission 3% of the time. Also, Ra is rarely present without other transuranic elements or decay products, which may emit beta or gamma radiation. Therefore, the radiation hazards from radium paint may not be entirely removed by the varnish, case or container. Care should be taken to prevent the inhalation or ingestion of flakes or dust which may contain radioactive materials. Radium dials have been shown to have dose rates near the face of in excess of 10uSv / hr, which would deliver a dose equivalent to one days background exposure in around 20 minutes. This dose