3-Pentachlorethyl-phenol, also known as pentachlorophenol (PCP), is a highly toxic, white crystalline chemical compound with the formula C6HCl5O. It is widely used as a broad-spectrum biocide, fungicide, and preservative in various applications, including wood preservation, pesticide formulations, and industrial water treatment. Due to its persistence in the environment and potential health risks, PCP has been banned or restricted in many countries. It is also classified as a priority hazardous substance by the European Union.
The CAS Registry Mumber 710-73-6 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 7,1 and 0 respectively; the second part has 2 digits, 7 and 3 respectively. Calculate Digit Verification of CAS Registry Number 710-73: (5*7)+(4*1)+(3*0)+(2*7)+(1*3)=56 56 % 10 = 6 So 710-73-6 is a valid CAS Registry Number.