Perfluorocyclohexanesulfonic acid (PFCHS) is a synthetic, highly fluorinated organic compound with the chemical formula C6F12SO3H. It is a colorless, odorless, and viscous liquid that is soluble in water and various organic solvents. PFCHS is a strong acid with a high level of thermal and chemical stability, making it useful in various industrial applications, such as the production of fluoropolymers, surfactants, and fire-fighting foams. However, due to its persistence in the environment and potential health risks, the use of PFCHS and related compounds has been restricted or phased out in many countries.
The CAS Registry Mumber 2106-55-0 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 2,1,0 and 6 respectively; the second part has 2 digits, 5 and 5 respectively. Calculate Digit Verification of CAS Registry Number 2106-55: (6*2)+(5*1)+(4*0)+(3*6)+(2*5)+(1*5)=50 50 % 10 = 0 So 2106-55-0 is a valid CAS Registry Number.