α,α,α',4,5-Pentachloro-o-xylene, also known as PCX, is a chlorinated organic compound with the chemical formula C8H3Cl5. It is a colorless to pale yellow liquid with a strong, pungent odor. PCX is a persistent environmental pollutant that is formed as a byproduct during the production of polychlorinated biphenyls (PCBs) and other chlorinated compounds. Due to its chemical stability and resistance to degradation, it can accumulate in the environment and bioaccumulate in the food chain, posing potential risks to human health and the ecosystem. As a result, it has been classified as a hazardous substance and is subject to strict regulations and monitoring.
The CAS Registry Mumber 18964-69-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,8,9,6 and 4 respectively; the second part has 2 digits, 6 and 9 respectively. Calculate Digit Verification of CAS Registry Number 18964-69: (7*1)+(6*8)+(5*9)+(4*6)+(3*4)+(2*6)+(1*9)=157 157 % 10 = 7 So 18964-69-7 is a valid CAS Registry Number.