Barium sulfide (BaS), a black-colored chemical compound, is a heavy metal sulfide with the chemical formula BaS. It is a solid at room temperature and has a cubic crystal structure. Barium sulfide is insoluble in water and is commonly used in the manufacturing of luminescent materials, such as phosphors for cathode ray tubes and X-ray screens, due to its ability to emit light when exposed to radiation. Additionally, it is employed as a pigment in ceramics and glassmaking, as well as in the production of other barium compounds. However, it is important to note that barium sulfide is toxic and should be handled with care due to its potential health risks.
The CAS Registry Mumber 8011-62-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 8,0,1 and 1 respectively; the second part has 2 digits, 6 and 2 respectively. Calculate Digit Verification of CAS Registry Number 8011-62: (6*8)+(5*0)+(4*1)+(3*1)+(2*6)+(1*2)=69 69 % 10 = 9 So 8011-62-9 is a valid CAS Registry Number.
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