1,1,2,5,5-pentachloro-penta-1,4-dien-3-one, also known as PCPD, is a chlorinated organic compound with the molecular formula C5Cl5O. It is a colorless to pale yellow crystalline solid with a pungent odor. PCPD is a highly toxic and persistent environmental pollutant, classified as a polychlorinated diene. It is formed as a byproduct during the production of certain chlorinated chemicals, such as hexachlorocyclohexane (HCH), and can also be released into the environment through the combustion of chlorinated organic materials. Due to its potential to cause adverse health effects, including liver and kidney damage, as well as its persistence and bioaccumulation in the environment, PCPD is subject to strict regulations and monitoring.
The CAS Registry Mumber 5780-53-0 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 5,7,8 and 0 respectively; the second part has 2 digits, 5 and 3 respectively. Calculate Digit Verification of CAS Registry Number 5780-53: (6*5)+(5*7)+(4*8)+(3*0)+(2*5)+(1*3)=110 110 % 10 = 0 So 5780-53-0 is a valid CAS Registry Number.