1,2,2,4-Tetrachloro-hexafluoro-butane, also known as CCl2FCClF2 or HCC-240, is a chlorofluorocarbon (CFC) compound consisting of four chlorine atoms and six fluorine atoms bonded to a carbon backbone. It is a colorless, odorless, and non-toxic gas at room temperature, with a molecular weight of 203.83 g/mol. This chemical is primarily used as a refrigerant, blowing agent, and fire suppressant due to its low toxicity, non-flammability, and high chemical stability. However, it is also an ozone-depleting substance, contributing to the depletion of the ozone layer when released into the atmosphere. As a result, its production and use have been phased out under the Montreal Protocol to protect the environment and reduce the impact on global warming.
The CAS Registry Mumber 375-40-6 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 3,7 and 5 respectively; the second part has 2 digits, 4 and 0 respectively. Calculate Digit Verification of CAS Registry Number 375-40: (5*3)+(4*7)+(3*5)+(2*4)+(1*0)=66 66 % 10 = 6 So 375-40-6 is a valid CAS Registry Number.