VI4, also known as hexavalent chromium, is a chemical form of chromium with an oxidation state of +6. It is a highly toxic and carcinogenic compound commonly found in industrial processes such as chrome plating, leather tanning, and pigment production. Hexavalent chromium can exist in various compounds, including chromates and dichromates, and is known for its ability to cause severe health issues, including respiratory problems, skin irritation, and an increased risk of lung cancer. Due to its hazardous nature, strict regulations are in place to control its use and exposure in the workplace and environment.
The CAS Registry Mumber 15831-18-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,5,8,3 and 1 respectively; the second part has 2 digits, 1 and 8 respectively. Calculate Digit Verification of CAS Registry Number 15831-18: (7*1)+(6*5)+(5*8)+(4*3)+(3*1)+(2*1)+(1*8)=102 102 % 10 = 2 So 15831-18-2 is a valid CAS Registry Number.