Phosphine, (4-chlorophenyl)-, also known as 4-chlorophenylphosphine or p-chlorophenylphosphine, is an organophosphorus compound with the chemical formula C6H5ClP. It is a colorless to pale yellow liquid with a pungent odor and is soluble in organic solvents. Phosphine, (4-chlorophenyl)- is primarily used as a reagent in the synthesis of various organophosphorus compounds, such as pesticides, flame retardants, and pharmaceuticals. Due to its high reactivity and potential toxicity, it is essential to handle 4-chlorophenylphosphine with caution and proper safety measures.
The CAS Registry Mumber 4538-32-3 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 4,5,3 and 8 respectively; the second part has 2 digits, 3 and 2 respectively. Calculate Digit Verification of CAS Registry Number 4538-32: (6*4)+(5*5)+(4*3)+(3*8)+(2*3)+(1*2)=93 93 % 10 = 3 So 4538-32-3 is a valid CAS Registry Number.