Phenylmercury chloride, also known as phenylmercuric chloride or C6H5HgCl, is an organomercury compound that consists of a phenyl group (C6H5) bonded to a mercury atom, which is further bonded to a chloride ion (Cl). It is a white crystalline solid with a melting point of 224-226°C and is soluble in organic solvents such as ethanol and acetone. Phenylmercury chloride has been historically used as a fungicide, particularly in seed treatments, and as a preservative in pharmaceuticals and cosmetics. However, due to its high toxicity and potential for bioaccumulation in the environment, its use has been restricted or banned in many countries. It is also known to be harmful to aquatic life and can cause severe health issues in humans, including neurological damage, if ingested or inhaled.
The CAS Registry Mumber 3508-21-2 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 3,5,0 and 8 respectively; the second part has 2 digits, 2 and 1 respectively. Calculate Digit Verification of CAS Registry Number 3508-21: (6*3)+(5*5)+(4*0)+(3*8)+(2*2)+(1*1)=72 72 % 10 = 2 So 3508-21-2 is a valid CAS Registry Number.